1 sorbic acid in alcohol and beverages .
( 1 ) add 200-300 mg of potassium sorbate and 20-40 milligrams of alcohol per liter of sulfur dioxide in foods .
( 2 ) Soda drinks : 0.03% -0.04 % according to the ratio of addition of sorbic acid .
( 3 ) fresh orange juice, hawthorn juice drinks : 0.02% according to the proportion of added sorbic acid, shelf life can be extended to six months.
( 4 ) Other types of non -alcoholic drinks : 0.04% -0.05 % according to the ratio of addition of sorbic acid .
In the production of sweet wines , sorbic acid is often used as a preservative in use. Sorbic acid antibacterial effect only in synergy sulfur dioxide will play a greater role . Allows the use of sorbic acid in the national standards , but should pay attention to in the course of the highest limits , not excessive . Also, pay attention to the relationship between sorbic acid and sulfur dioxide, alcohol , and to maximize the preservative sorbic acid . Sorbic acid is an unsaturated fatty acid , non-toxic , can be completely absorbed . It has a special role in the anti- yeast , a fungus inhibitor stable ; its ability to inhibit the propagation of wine yeast , is more efficient in the inhibition of the absence of air ; can inhibit the ability of the yeast fermentation of sugar without killing them. National standard ” wine ” in the provisions of GB15037-2006 the maximum allowable amount of 200mg / L, inspection agencies at all levels can be detected in the presence of sorbic acid and measured its dosage . But note that some countries do not allow the import of sorbic acid -treated wine , therefore , in the production of export products must pay attention and understand clearly . Sorbic acid resistant yeast capacity because of the presence of ethanol and greatly strengthened, but the low solubility of sorbic acid . We in the actual production process, often encounter situations using potassium sorbate . The author is in accordance with the standards prescribed amount of sorbic acid , potassium sorbate converted into dose , the wine has been filtered sterilization recommended dose of sorbic acid or potassium sorbate are listed according to the different requirements of alcohol under the table , for colleagues to use the reference .
Note that regardless of the number of doses used , sorbic acid bacteria are not resistant effect. Although it can prevent further fermentation of sweet wine , but it can not prevent contamination of wine acetic acid bacteria , lactic acid bacteria can not prevent contamination of wine . When sorbic acid disappears, the risk of bacterial contamination will be doubled , then, the wine has an unpleasant odor , similar to bay leaves greasy , because ethylene glycol has been generated . Sorbic acid in the case of only a certain concentration of ethanol in the presence of sulfur dioxide , in order to exhibit satisfactory results. It can enhance the effect of the latter , but never replace them . The solubility of sorbic acid in water is not very large, it is higher than the soluble form of potassium sorbate . 270g / L solution contains potassium sorbate 200g / L sorbic acid. Due to the low solubility of sorbic acid , when added to the wine must be careful to slowly added , with vigorous stirring , mixed thoroughly using a circulation pump . In the following conditions , sorbic acid can inhibit the activation of yeast in wine :
1 ) According to the wine ‘s alcohol content and acidity using a sufficient amount .
2 ) Wine has to be treated carefully clarified , has done an effective sterilization filter .
3 ) Mixed with wine quickly and completely .
4 ) After the treatment , the free sulfur content of the wine is generally 60mg/L-80mg/L, sufficient to prevent oxidation and bacterial growth.
2 sorbic acid in soy sauce and pickles in products .
( 1 ) Soy sauce : In accordance with the ratio of 0.01% addition of sorbic acid , placed 70 days in the hot season , can make the sauce mildew problem of deterioration does not occur.
( 2 ) sauce products : Due to relatively viscous product category , sorbic acid uniformly dispersed therein is not easy . Before filling the product user can , in the case of heating , the solution was added the appropriate concentration of sorbic acid .
( 3 ) Soy sauce pickles : sorbic acid can be dissolved in glacial acetic acid being then added to the pickle , in the amount of 1.0 g / kg , the control and the pH of 4.0-4.5 room.
( 4 ) Pickles lees : sorbic acid can be first dissolved in ethanol, wine or liquor , and then added to the pickle , added in an amount of 0.75 g / kg.
( 5 ) Vinegar Pickles : The sorbic acid is added directly to the material being , dosage 0.5 g / kg. ( 6 ) pickled cucumber , beetroot and other pickles : You can add the right amount of salt containing potassium sorbate in vinegar ( 0.1% according to the amount of salt added ) . To prevent the occurrence of turbidity brine pickles , can first salt, spices and potassium sorbate were dissolved in water and then add vinegar. ( 7 ) Kimchi : potassium sorbate in an amount of 0.05% -0.07 % . Potassium sorbate first uniformly mixed with salt , then put into the pickle .
3 sorbic acid and potassium in aquatic products in the
( 1 ) fish cake food : pH value products like surimi between 6.8-7.2 . If you lower the pH , it will affect the elasticity of fish cake . The preservative sorbic acid is an acid , so the amount of sorbic not more than 1.0 g / kg. In order to solve the elastomeric phase pH and kamaboko contradictory problem, use mixtures of potassium sorbate and sorbic acid , potassium sorbate can also be used alone .
( 2 ) fish sausage : 0.1% -0.2% according to the amount added to the fish sausage mixture of sorbic acid and potassium sorbate , storage two weeks in the case of 30 ℃ , this sausage is not bad ; the control samples after one week will turn bad . When the pH value is adjusted to less than fish sausage 6 , at a temperature of 10-15 ℃ , this sausage meat can be stored without deterioration seven weeks . ( 3 ) dried fish products : a high degree of drying such foods , the moisture content of 30 % or less of dried fish products , general bacteria corruption does not happen , but it will produce mildew phenomenon . Addition of sorbic acid , dried fish products can effectively prevent the occurrence of mildew problem , sorbic acid dosage of 1.0 g / kg. ( 4 ) Smoked products : spraying the article is smoked in a concentration of 5% -10 % solution of potassium sorbate , prior to the spraying process can be smoked , or may be implemented in or after smoking the smoking .
( 5 ) cooking the fish sauce : Add 0.1% of sorbic acid in an amount such food at a temperature of 10-15 ℃ , can be stored for two months without deterioration .
( 6 ) fish , shrimp and other seafood : After cleaning fish and other aquatic products , immersed in a solution containing the preservative sorbic acid for 20 seconds, then drain the solution, the fish chilled. Formulation preservation solution is : 1.0% sorbic acid 5.0%, 1.0%, 20% glycerol , 3.0% polyvinyl alcohol 0.3% , the rest are water.
4 sorbic acid in meat and sausage
( 1 ) dried meat , dried sausage , smoked ham and other similar dry meat can be soaked in a concentration of 5 % -15 % potassium sorbate solution for 30 seconds.
( 2 ) beef sausage , pork sausage, beef and pork sausage mixture : part of the meat can be cut in accordance with an amount of 0.05% -0.08 % of sorbic acid added , then made into sausage , sausage surface spray at a concentration of 5% potassium sorbate solution .
( 3 ) General meat material : first according to the amount of 0.05% -0.1 % of sorbic acid or potassium sorbate added to meat compound, followed by 0.01% to 0.5% according to the amount of added C10 or C12 fatty acids glycerol esters. In addition, adding sodium nitrate compound meat ( in an amount of 20ppm-30ppm) and sodium hexametaphosphate .
( 4 ) meat : 0.08% -0.1 % according to the amount of added sorbic acid, or a mixture of sorbic acid and potassium sorbate .
( 5 ) Cooked chicken : chicken cooked on potassium sorbate preservative solution for 30 seconds, and then stored at 4 ℃ conditions , can be fresh 20 days . Potassium sorbate preservative solution formulation is: 10 % citric acid 6% Potassium sorbate 34% modified corn starch, 50% water pH,,,, preservation of the solution was 3.2 .
( 6 ) fresh poultry : the preservative solution containing sorbic acid is sprayed onto the surface of fresh poultry , 7 ℃ under the conditions of storage, 18 days, the product is no deterioration phenomenon ; the control sample 5 days after the occurrence of the phenomenon of deterioration . Fresh liquid formula is: sorbic acid containing 7.5% propylene glycol 70 parts and 20 parts water , 10 parts of glycerol.
( 7 ) fresh chicken , chicken breast : The sorbic acid concentration of 10% solution soak chicken , chicken breast for 30 seconds, in the case of 4 ℃ , and can be stored for 20 days, the preservation time is still twice that of the .
5 sorbic acid in vegetables and fruits preservation.
( 1 ) vegetables, fruits : vegetables , fruits and sorbic acid preservative together into a polyethylene bag , sealed and stored in case of 30 ℃ month
Above , you can keep the green of vegetables , fruits unchanged. Sorbic acid preservative formulation is : 80 parts of calcium peroxide , 3 parts of sorbic acid , 70 parts of zeolite, and the weight of the fruit preservative is 1:20 .
( 2 ) Apple: the concentration of 0.05% of the fresh surface was sprayed on apples , 4 months storage at room temperature , only 3.2% -6.0 % of apples deterioration occurs . Fresh liquid formula is: 1 sorbic acid , 4 parts of talc , 95 parts water.
( 3 ) Canned vegetables : In accordance with the proportion of 0.1% addition of sorbic acid , to prevent rusting tin .
( 4 ) tomato sauce : After opening the bottle, sorbic acid can be added according to the proportion of 0.025% . Sorbic acid was dissolved in acetic acid first , and then added to the tomato sauce .
( 5 ) fruit: a concentration of 2% to 5% solution of potassium sorbate or spray dried soaked .
( 6 ) cooked beans : Add the amount of sorbic acid control in one-thousandth or less. Adjust pH value to note that the material , when the pH values above 7.0, the addition of small amounts of edible acids ( mostly citric acid) in the material , the pH is controlled between 6.3-6.5 .
( 7 ) marmalade : When the material is 5 ° Brix , the sorbic acid can be added ( in an amount of 0.25 g / kg ) . When boiling marmalade , because of the lower pH, volatile sorbate , sorbic acid, thereby reducing the actual content , so after cooking finished , it should be supplemented with the marmalade sorbic acid .
( 8 ) jam, pectin : sorbic acid can be added ( in an amount of 0.05% ) or the corresponding concentrations of potassium sorbate . Further , the material may be sprayed on the surface concentration of 2% solution of potassium sorbate .
( 9 ) juice concentrate : add potassium sorbate and the amount of sulfur dioxide. Potassium sorbate in an amount of 0.1% -0.2 % potassium sorbate first dissolved in a small amount of water , then poured the juice and mix well.
6 . Sorbate preservative application in pastry .
Sorbic acid can be added directly into the flour or dough , the amount is generally 0.1% -0.15 % ( by weight of flour meter ) . When using potassium sorbate, potassium sorbate should first be dissolved in water or milk, being then added to flour or dough being used in an amount of 0.13% potassium sorbate 0.2% ( with flour weight) . When sorbic acid and potassium products for starch , preferably in advance of the material with a small amount of vinegar acidification , this effect will be good.
7 sorbic acid used in preserves, candy preservation.
For marzipan , sugar, walnuts , peanuts, sugar or general bonbons , sorbic acid can be added according to the amount of 0.08% -0.15 % . For some of the high sugar content of candy , you should increase the amount of sorbic acid .
8 sorbic acid in cheese preservation.
( 1 ) Hard cheese: a concentration of 20% -40 % solution of potassium sorbate sprayed material , or the material being immersed in a solution of potassium sorbate .
( 2 ) cheese powder : You can directly add powdered calcium sorbate or sorbic acid .
( 3 ) Cheese salting salt : potassium sorbate using three kinds of methods , one is added to the salt solution of potassium sorbate in an amount of 0.2% -1.0 % , and the salt solution to produce this cheese ; the second is finished cheese prior to sale , at a concentration of 10% solution of potassium sorbate immersion or spraying. Third, with sorbic acid solution containing a certain amount of alcohol soak or spray cheese.
( 4 ) Fresh cheese: sorbic acid powder ( in an amount of 0.05% -0.1 % ) and cheese mix directly ; dubbed or potassium sorbate solution was then added into the cheese , potassium sorbate in an amount of 0 .07 % -0.13 %.
( 5 ) emulsified cheese: Add sorbic acid dissolves in the process of emulsifying agent , the amount of 0.06 % -0.1 %.
( 6 ) pre-packaged cheese: Some cheese ripening process is vinyl coated polyester in the composition of the bag carried , you can add a certain amount of cheese in sorbic acid, potassium sorbate or calcium .
9 sorbic acid used in margarine preservation.
( A ) to be a liquid margarine emulsion was added potassium sorbate in an amount of 0.06% -0.12 % .
( 2 ) To a mixed emulsion and fat margarine added sorbic acid ( in an amount of 0.03% -0.06 % ) and potassium sorbate ( 0.03% dosage ) .
10. Sorbic acid in mayonnaise and salad preservation.
( 1 ) may be added sorbic acid ( in an amount of 0.08% -0.1 % ) and potassium sorbate ( 0.1% dosage ) into the mayonnaise .
( 2 ) addition of sorbic acid to salads (the amount of 0.1% ) , sodium benzoate , and mixtures thereof ( in an amount of 0.06% ) , the acidity and prevents the generation of the bubble , the more sour and bubbles generated due to the lactic acid fermentation the .
11 other products in the preservation of sorbic acid applications.
( 1 ) Health Products syrup : In accordance with the ratio of 0.05% addition of sorbic acid , to prevent mildew syrup .
( 2 ) Animal Feed : Foreign invent a mixed feed preservatives, its incorporation into animal feed , in any season storage for more than 90 days, the feed will not mildew. Fungicides such as recipe : 100 parts of sodium acetate , 200 parts of acetic acid , sorbic acid, 3 parts . 1% of the total dosage of the fungicide feed .
Monthly Archives: April 2014
Copper 8-hydroxyquinoline MSDS
1 Basic information
[ Chinese name] hydroxyquinoline copper ; 8 – hydroxyquinoline copper
Alias [ Chinese ] bis (8 – hydroxy- quinolyl ) copper
[English name] oxine-copper; copper 8-hydroxyquinoline
[ English Name ] Bis (8-hydroxyquinolinato) copper (II); Copper (II) Bis (8-hydroxyquinolinate); Oxine-Copper
[ CAS No. 10380-28-6 ]
[ MF ] C18H12N2O2Cu
【 Molecular Weight 】 351.84
[ Purity ] ≥ 98%
[ MDL No. 】 MFCD00067392
2 Characters
Yellow-green crystalline powder , odorless , tasteless , non-volatile, no deliquescence , flame retardant, black decompose at higher temperatures , insoluble in water and most organic solvents , slightly soluble in quinoline , pyridine, glacial acetic acid , chloroform , weak , soluble in acid, alkali case decomposition.
Industrial green or brown solid. The nature of the general stable, but decompose at high temperatures deterioration .
Three physical parameters
Solubility: 20 times fully dissolved in glacial acetic acid
4 Quality Specifications
Purity : ≥ 98%
Loss on drying : ≤ 0.5%
Hydrochloride : ≤ 0.01%
Sulfate : ≤ 0.1%
5 Instructions for use
Mildew ; pesticides, pharmaceuticals synthesis of metal corrosion inhibitor ;
Used as a fungicide in agriculture . Also used as rope, wire , leather, vinyl mildew .
By 8 – hydroxyquinoline sulfate derived role .
6 Storage Transportation
Dark dry and ventilated place
UN number : UN3077
8-Hydroxyquinoline MSDS
1 Basic information
Chinese Name: 8 – hydroxyquinoline
Chinese alias: 8 – quinoline hydroxide 8 – hydroxy naphthalene nitrogen, ortho hydroxy nitrogen (Miscellaneous) naphthalene, oxine , 8 – hydroxy-naphthyridine
Name :8-Hydroxyquinoline
English Name :8-Hydroxyquinoline; 8-Oxychinolin; 8-Quinolinol; Oxine
Grade: AR
CAS Number :148 -24-3
Formula: C9H7NO
Molecular Weight: 145.16
CAS Number :148 -24-3
No. MDL: MFCD00006807
EINECS No. :205 -711-1
RTECS Number: VC4200000
BRN No.: 114512
PubChem number: 24855220
2 Characters
White or light yellow crystal or crystalline powder , insoluble in water and ether , soluble in ethanol , acetone, chloroform , benzene or dilute acid, can be sublimated. Less corrosive. Low toxicity, LD504800mg/kg.
3 Quality Standards
|
Name (content and impurity content%) |
Index |
Result |
|
8 – hydroxy quinoline (C9H7NO) content ≥ |
99.5 |
99.7 |
|
Melting point ℃ |
73.0 ~ 74.5 (1 ℃) |
73.1 ~ 74.0 (1 ℃) |
|
Sensitivity tests for magnesium |
Qualified |
Qualified |
|
Acid dissolution test |
Qualified |
Qualified |
|
Residue on ignition (as sulfate) ≤ |
0.02 |
0.015 |
|
Chloride (Cl) ≤ |
0.002 |
0.0015 |
|
Sulfate (SO4) |
0.01 |
0.006 |
4 Physical Parameters
[1]
Melting point (º C): 75 ~ 76
Boiling Point (º C): 267
Density: 1.03
5 Quality Specifications
Purity: ≥ 99%
Melting point ≥ 75 ℃
Residue on ignition (as sulfate): ≤ 0.02%
Chloride : ≤ 0.002%
Sulfate: ≤ 0.01%
Magnesium sensitivity test: pass
Acid dissolution test: pass
6 dissolved
Soluble in ethanol , acetone, chloroform , benzene, and a mineral acid, almost insoluble in water .
8 – hydroxy quinoline is bisexual, soluble in strong acid , alkali, alkali ions in ionization, can be combined in acid hydrogen ions in PH = 7时solubility minimum.
7 toxicological data
1 Acute toxicity: rat oral LD50: 1200 mg / kg; mouse oral LC50: 20 gm / kg;
Intraperitoneal LD rat: 43 gm / kg; mouse subcutaneous LCLo: 83600 ug / kg.
2 inhalation toxicity: rat:> 1210 mg/m3/6H
The substance may be hazardous to the environment, the water should be given special attention.
8 molecular structure data
1, the molar refractive index: 44.06
2, molar volume (m3/mol): 115.2
3, parachor (90.2K): 320.2
4, the surface tension (dyne / cm): 59.7
5, the polarization rate (10-24cm3): 17.47
9 computational chemistry data
A hydrophobic parameter calculation reference value (XlogP): 2
2, the number of hydrogen bonds for the body: 1
3, the number of hydrogen bond acceptors: 2
4, rotatable bond: 0
5, topological molecular polar surface area (TPSA): 33.1
6, the number of heavy atoms: 11
7, the surface charge: 0
8, the complexity: 138
9, the number of atomic isotopes: 0
10, determines the number of atoms stereocenter: 0
11, the number of uncertain atom stereocenter: 0
12, determines the number of bond stereocenter: 0
13, the number of uncertain bond stereocenter: 0
14, the number of covalent bond unit: 1
10 synthetic
1 o-aminophenol by cyclization reaction. Glycerol was added to the acid reaction pot, stirring slowly adding concentrated sulfuric acid, while the o-aminophenol , o-nitrophenol were added sequentially, fuming sulfuric acid to join the 65% of the total. Heating up to 125 ℃, heating was stopped and warm naturally to 140 ℃, when the temperature was returned to 136 ℃. The rest continues oleum added maintaining the temperature at 137 ℃. After the addition of acid, heat 4h, cooling to 100 ℃, 10 times the amount of pumped water bloom (in o-phenol) acid pot was stirred and heated to 75-80 ℃, with 30% sodium hydroxide solution to a pH of 7-7.2. The precipitate was discharged hot, cooling blocks, sublimation under reduced pressure, to give 8 – hydroxyquinoline products.
2 o-aminophenol, o-nitrophenol, glycerol , acetic acid mixture of concentrated sulfuric acid was added, and the mixture was heated to boiling until the beginning. And then refluxed on an oil bath to remove unreacted nitrophenol by steam distillation. Cooled, neutralized with sodium hydroxide solution and recovered by steam distillation, i.e., to give 8 – hydroxyquinoline.
3 of quinoline sulfonated get 8 – quinoline sulfonic acid groups, and then after alkali fusion get 8 – hydroxy quinoline bases, and finally by acidification to give 8 – hydroxy quinoline. Preparation process is as follows:
① sulfonation quinoline as raw materials in the raw material was added slowly with stirring to sulfuric acid in a sand bath heated at 100 ~ 180 ℃, sulfonated 2 ~ 3h. Then cooled to room temperature, then further cooled ice, filtered dried to give product 8 – quinoline sulfonic acid.
② alkali melt process under stirring, the sulfonated product was added slowly to the molten base, in the melt of about 200 ~ 240 ℃ 30 ~ 40min, cooled water was added and heated to dissolve all the cooling to room temperature After acid and then neutralized to pH = 7, upon crystallization, filtration, the filter cake was dry.
③ The alkali fusion product distillation process using steam distillation, cooling and crystallization is the product 8 – hydroxy quinoline.
11 The main purpose
1, is widely used for the determination and separation of metals. Precipitating agent and precipitation and separation of metal ions in the extraction agent, with the following metal ions: Cu +2, Be +2, Mg +2, Ca +2, Sr +2, Ba +2,?????? Zn? +2, Cd? +2, Al? +3, Ga? +3, In? +3, Tl? +3, Yt? +3, La +3, Pb? +2, B? +3, Sb ? +3, Cr? +3, MoO? +22, Mn? +2, Fe? +3, Co? +2, Ni? +2, Pd? +2, Ce? +3
1 used as pharmaceutical intermediates, synthetic grams Xie Li Ning, clioquinol, flutter respite sensitive materials, but also dye, pesticide intermediates. The product is a halogenated quinoline class of anti-amoebic drug intermediates, including quinoline iodoform, clioquinol, iodoquinol so on. These drugs inhibit the intestinal commensal bacteria play a role in anti-amoebic of amoebic dysentery effective, no outside influence on intestinal amoeba. Foreign reports this class of drugs can cause subacute optic neuropathy, the drug has been disabled in Japan and the United States, caused by the disease iodoquinol than clioquinol rare. 8 – hydroxy quinoline also dye, pesticide intermediates. Copper sulfate and is an excellent antiseptic, disinfectant and fungicide. The product is a complex indicator for chemical analysis.
2 is used as a complexing agent and an extractant precipitation and separation of metal ions, with Cu +2, Be +2, Mg +2, Ca +2, Sr +2, Ba +2, Zn? +2, Cd + 2, Al +3, Ga +3, In +3, Tl +3, Yt +3, La +3, Pb +2, B +3, Sb? +3, Cr +3, MoO? +22, Mn + 2, Fe +3, Co +2, Ni +2, Pd +2, Ce +3, and other metal ions. Determination of organic trace analysis of nitrogen heterocyclic organic synthesis. Also dyes, pesticides and halogenated quinoline class of anti-amoebic drug intermediates. Copper sulfate and is an excellent antiseptic .
3 of epoxy adhesive can be added to improve the metal (especially stainless steel) adhesive strength and heat aging resistance, the amount is generally 0.5 to 3 parts. Halogenated quinoline class of anti-amebic drugs intermediates, pesticide, dye intermediates. Complexometric titration can be used as an antifungal agent, a preservative and industrial polyester resin, phenol resin, and a hydrogen peroxide stabilizer, or a chemical analysis indicator .
(4) The product is an intermediate halogenated quinoline drugs, but also dyes, pesticide intermediates. Copper sulfate and is an excellent antiseptic, disinfectant and fungicide. Cosmetics maximum allowable content (mass fraction) was 0.3%, sunscreen products and products for children under 3 years of age (as talcum powder) is disabled and should indicate on the product label “disabled children under 3 years of age.” In dealing with bacterial infections and bacterial infections of the skin, eczema, lotion 8 – hydroxy quinoline mass fraction of 0.001% to 0.02%. It is also used as a disinfectant, antiseptic and fungicide, and its strong anti-fungal effect. 8 – hydroxyquinoline sulfate used in skin creams and lotions content (mass fraction) of 0.05% to 0.5%.
12 Risk Phrases
R22 Harmful if swallowed.
R37 Irritating to respiratory system.
R38 irritating to the skin. [2]
13 storage transport
Dark dry and ventilated place
14 Hazard statement
Dangerous code: Xn
Dangerous Level: 22
Avobenzone
Avobenzone
Chinese Name: avobenzone
Chinese alias: Parsons 1789; 1 – [4 - (1,1 - dimethyl-ethyl) phenyl] -3 – (4 – methoxy-phenyl) -1,3 – propanedione; sunscreen; 1 – (4 – tert-butylphenyl) -3 – (4 – methoxyphenyl) propane-1 ,3 – dione
English name: Avobenzone
English Name: 1 – (4 – (1,1-Dimethylethyl) phenyl) -3 – (4-methoxyphenyl) -1,3-propanedione; 4-tert-Butyl-4′-methoxy-dibenzoylmethane; Parsol 1789; Sunscreener 1789 ; Butyl Methoxydibenzoylmethane; 1 – (4-tert-butylphenyl) -3 – (4-methoxyphenyl) propane-1 ,3-dione; 2-pentoxy-1 ,3-diphenyl-propane-1 ,3-dione
CAS :70356-09-1
EINECS :274-581-6
MF: C20H22O3
MW: 310.3869
Physical and chemical properties
Relative density: 1.084g/cm3
chloramine B MSDS
English name : chloramine B
CAS NO. 127-52-6
English alias sodium N-chlorobenzenesulphonamide; Cholramine-B; N-Chlorobenzenesulfonamide sodium salt; sodium chloro (phenylsulfonyl) azanide; sodium chloro (phenylsulfonyl) azanide hydrate; [benzenesulfonyl (chloro) amino] sodium
EINECS 204-847-9
Formula : C6H5ClNaNO2S
Supplies:http://www.lubonchem.com
CAS: 127-52-6
Appearance: white crystalline powder
Content : 99% Min
Chlorine : 27% Min
Clarity : clear and transparent
PH: 9-11
Iron : 10ppm Max
Heavy metal : 10ppm Max
Packing : 25Kg/50Kg cardboard
1 , security terms
S7Keep container tightly closed.
Keep container tightly closed .
S22Do not breathe dust.
Do not breathe dust.
S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39Wear suitable protective clothing, gloves and eye / face protection.
Wear suitable protective clothing , gloves and goggles or masks.
S45In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
In case of accident or feel unwell, seek medical advice immediately ( if possible show the label ) .
2 , the term risk
R2Risk of explosion by shock, friction, fire or other source of ignition.
By shock, friction , fire or other sources of ignition explosion hazard.
R31Contact with acids liberates toxic gas.
Contact with acids liberates toxic gas.
R34 Causes burns.
Cause burns.
R42May cause sensitization by inhalation.
May cause sensitization by inhalation .
Purposes: organic chlorine disinfectant containing chlorine 26-28 % of the more stable, sealed to maintain a year lost only 0.1% of available chlorine . Slightly soluble in water , irritating and corrosive smaller role than hypochlorous slowly. Mainly used for drinking utensils, various utensils , fruits and vegetables disinfection (5ppm), farming and enamelware water disinfection ( 1% ) . Can be used for milking cows and cleaning the breast and livestock invasive urinary tract and purulent washing and disinfection.
Sodium gluconate MSDS
1, the basic information
Chinese name : Sodium gluconate
Chinese alias : D- glucose , sodium
Name : Gluconic acid, sodium salt
English Name : SODIUM GLUCONATE RE; Gluconic Acid Sodium; Sodium gluconate; sodium 2,3,4,5,6-pentahydroxyhexanoate (non-preferred name)
CAS No. :527 -07-1
EINECS No. :208 -407-7
Formula : C6H11NaO7
Molecular Weight : 218.14
Melting point :206-209 ℃
Appearance: white crystalline powder or granules.
Solubility: easily soluble in water , slightly soluble in alcohol, can not soluble in ether.
Specifications : Complies with FAO standard FAO / WHO; USPXX Ⅲ version ; corporate standards ; also according to customer requirements.
Packing : 5Kg plastic woven bags ; also according to customer requirements.
Uses:
One for medicine, you can adjust the acid-base balance in the human body to restore nerve function normally , for the same purpose , used in food additives ;
Water is used as a stabilizer , and its superiority in:
⑴ obviously coordinated effects, for molybdenum, silicon, phosphorus , tungsten, nitrite , and other formulations , the coordination Effect , inhibition effect of greatly increased ;
⑵ contrast with the general corrosion , corrosion rate increases with increasing temperature ;
⑶ scale technical ability requirements for calcium, magnesium , iron has a strong complexing ability , particularly Fe3 + has an excellent chelating ;
Steel surface cleaning agent : steel surface plated bowl as needed , chrome , tin , nickel- plated to suit the special purpose , its slab surface shall be rigorously cleaned , the coating material combined with a solid steel surface , this time adding its cleaning agents sodium gluconate will achieve very good results ;
Pipeline ; rust on the bottle labels and bottlenecks to dye force is not ideal ; washed trace residues on food security is not ideal ( such as phosphate residues ) ; wash water discharged into public nuisance ;
2 , the indicator
Content ≥ 98% ≥ 98% ≥ 98.5%
Chloride – ≤ 0.07% ≤ 0.05%
Arsenic ≤ 3P.P.M ≤ 3P.P.M ≤ 3P.P.M
Lead salts ≤ 10P.P.M ≤ 10P.P.M ≤ 0.001%
Heavy metals ≤ 20P.P.M ≤ 20P.P.M ≤ 0.002%
Sulfate – ≤ 0.05% ≤ 0.05%
Restore matter ≤ 0.5% ≤ 0.5% ≤ 0.5%
3 Synthesis
Industry generally substance containing glucose ( e.g., grain ) as raw materials, the first method by fermentation of glucose to obtain gluconic acid and then neutralized by the sodium hydroxide , sodium gluconate can be obtained , electrolysis and oxidation may also be synthesis. Our most used chemical oxidation – hypobromite oxidation to produce synthetic .
The enzyme according to the different types of fermentation , fermentation can be divided into two clocks, one kind of enzyme is Aspergillus Niger , another acid , the glucose dehydrogenase is formed by means of a law of a lactone , and the decomposition of the ester .
Sodium gluconate may be obtained directly from the fermentation of glucose . In this case , the composition of the fermentation substrate can be held as follows: glucose 250 ~ 350g / L, magnesium sulfate heptahydrate 0.2 ~ 0.3g / L, urea, diammonium phosphate , or 0.4 ~ 0.5g / L. This matrix must be sterilized . The fermentation process, the temperature is controlled to 30-32 ° , pH ~ 50% with 30% sodium hydroxide solution is controlled to 5.5 to 6.5 , the fermentation process lasts 40 ~ 100h. Then , filtration and washing by removing microorganisms , active carbon , filtered , concentrated or spray dried to obtain the finished result .
4 , security
Sodium gluconate nontoxic. Sodium gluconate and chelates with metal ions present in the water formed , through ordinary biological treatment rapidly and completely degraded. Released during the degradation of the heavy metal ions can be removed by precipitation or adsorption on the wastewater treatment sludge which is formed during the removal .
Sodium gluconate Application
Sodium gluconate Application
Steel surface cleaning agent used :
If you need plated steel surfaces bowl , chrome , tin , nickel- plated to suit special applications such as the manufacture of tinplate , galvanized plate , chrome plated ( electrical degrees ) , with its slab surface shall be rigorously cleaned , the coating material and steel the surface of a solid combination , this time adding its sodium gluconate cleaning agents will reach very good results. This has been confirmed by a large international company manufacturing tinplate .
Used as a cement admixture :
After a certain amount of glucose added to the cement , sodium can increase the plasticity and strength of the concrete , and there is blocking effect
, Postpone the concrete during the initial and final solidification , such as adding 0.15% of sodium gluconate , can be extended at the beginning of the coagulation time of more than 10 times the concrete , the concrete is moldable time from hours to days to extend , without affecting the its fastness. Plasticity and delaying the initial solidification time is a very important issue in the concrete operations, such as high temperatures and large-scale construction projects seasonal jobs , delaying the initial solidification time is a problem, sodium gluconate can satisfactorily solve this problem. Also glued well at high temperatures is more difficult , added sodium gluconate concrete after high temperature at 170 ℃ , within a few hours of plastic , so these issues can be satisfactorily resolved . Therefore, as a cement admixture of sodium gluconate has been widely used in foreign countries important building projects, such as the Middle East, a lot of bridge engineering . But we have yet to promote the use of domestic applications in this regard , is said to have refined cellulose sodium in papermaking wastewater , the effect of sodium gluconate is simply not comparable .
But can also used in electroplating , film manufacturing industry.
As a multi- hydroxy acid type excellent corrosion inhibitor sodium gluconate , as with many of the above specific properties, such as can be willing to work hard in the application of technology , will be developed into a big industry .
Sodium gluconate is used in the construction industry
Concrete is a combination of materials made of cement , aggregate, admixtures and water. Concrete is made of artificial material for all the most abundant . Three-quarters of concrete aggregate, however, the most active ingredient in concrete grout . The nature and properties of concrete depends mainly on the nature of the grout . Concrete admixtures can provide some beneficial effects , such as accelerated clotting , slow solidification , the air into a bubble-like existence , reduce water consumption and increase the plasticity and so on. Usually use several kinds in the cement admixture , the admixture of the various applications can be enhanced in some other.
Sodium gluconate can be used as an admixture in concrete , it features in concrete as follows : water reducer and retarder
Sodium gluconate is generally used alone , but in combination with other retarders such as carbohydrates and used together with phosphate . Sodium gluconate is a crystalline powder. Is produced under proper conditions and control requirements . This compound is chemically pure and non-corrosive. Quality is constant . These features ensure that a reliable and reproducible results in the application.
As a reducing agent sodium gluconate
By adding a reducing agent, the water to cement ratio (W / C) can be reduced . Sodium gluconate can be obtained by adding the following effects: 1 , enhance the work of the ratio of water to cement (W / C) remain unchanged, adding sodium gluconate can enhance workability . At this time , from the sodium gluconate is a plasticizer . In less than 0.1% of sodium gluconate plus the amount which is proportional to the degree of improvement and the amount of work . 2 , enhancing the strength of the cement when the concrete content is kept constant and the water content can be reduced ( i.e., W / C lower ) . When the amount of sodium gluconate was 0.1 %, the amount of water can be reduced by 10%. 3 , reducing the amount of water and cement with the ratio to reduce the cement content , W / C ratio is kept constant. In this case, the reduction agent is sodium gluconate as a cement . Under normal circumstances, these two aspects of the performance of concrete , said it was important : contraction and generate heat.
Sodium gluconate as a retarder
Sodium gluconate can significantly delay the start time and the end of the solidification of the concrete. In the amount of 0.15 % or less, with the logarithm of the initial solidification increase the amount of time proportional relationship, that with increase the amount to double clotting time delay to the start times , which makes it able to work from the time few hours to a few days without compromising on strength. Especially hot days and a longer time to be placed , this is an important advantage .
Used as a cleaning agent bottles :
Beverage industry, food industry , brewing industry, the number of days to hundreds of millions of dollars in glass bottles, such as soda bottles , beer bottles, milk bottles , cans bottles, soy sauce , wine bottles , etc. , the cleaning work is a very important thing, cleaning pharmaceutical formulations agent is a higher degree of difficulty of the technical work . Currently not yet appeared an ideal drug . The main problems are: detergent is not strong, easy to plug the washing machine nozzle and pipe ; rust on bottle labels and bottlenecks to dye force is not ideal ; washed trace residues on food security is not ideal ( such as phosphate residues ) ; wash water discharge into public nuisance ( can not comply with the national standard ) . Such as sodium gluconate use in pharmaceutical formulations in their glass as the main cleaning agent , the above problems can be solved. ( Eighties bottling has been done in Shanghai , Shanghai brewery large trials have identification to prove ) this application is not yet developed , if a market has great potential .
Water is used as a stabilizer :
Because sodium gluconate has excellent corrosion and scale effect, it is widely used in water stabilizer , such as the petrochemical business cycle cooling water system , low pressure boilers, engine cooling water systems and other treatment agents . Because it has the following specific advantages : ⑴ obvious coordination effects. Suitable molybdenum, silicon, phosphorus , tungsten, nitrite formulations , the coordination Effect , the inhibition effect is greatly improved. ⑵ corrosion rate increases with increasing temperature . General corrosion inhibition efficiency increased with increasing temperature drop , or even completely useless. But contrary sodium gluconate , corrosion rates within a certain range to improve with increasing temperature , for example, carbon steel and other materials test , the temperature rose from 77 ℃ F on to 120 ℃ F, its average rate of 5% buffer above . Therefore, this singular feature of sodium gluconate , the higher the temperature of the system from low to high temperatures or temperature variation system , is ideal to use as a corrosion inhibitor . ⑶ scale capability: calcium , magnesium , iron complex has a strong ability to scale so strong, particularly Fe3 + chelation excellent , even in the full scope of the role of internal PH . ⑷ eliminate pollution. Using sodium gluconate as circulating cooling water corrosion inhibitor , to eliminate pollution , which is an advantage other corrosion inhibitor currently in use can not be compared.
Used in medicine :
Regulation of acid-base balance in the human body to restore nerve function properly , but also for the same purpose , used in food additives
Mexican traders want to export to Asia ethylene
Due to weak European markets , Asian ethylene prices are relatively high, Mexican ethylene traders plan in mid- April exports of nearly 4,000 tons of ethylene to Asia. However, insiders said , because it is difficult to rent a boat , the possibility of such a successful transaction is relatively small.
Mexico usually ethylene exports to Europe countries, such as Belgium. Pulitzer data show that exports of 4,000 tons of goods from Mexico to Europe, shipping is about $ 250 / t . The traders and brokers have said that Mexico needs to Asian Maritime month , is expected to take at least a freight around $ 400 to 500 / t. So, Mexico ethylene CFR South East Asia prices of $ 1320 ~ 1420 / ton , while the price of $ 1170 CIF Northwest Europe / ton.
There are traders said , even though arbitrage can play a role , it is difficult to find a suitable freighter . Because this is not a typical route, the owners may be reluctant to take such a risk . Moreover , traders do not want to turn back when the boat is empty.
However , there are a case of 9000 tons of cargo in Europe want to export to Asia in June , has yet to offer, but the seller said to bid $ 1,350 / ton (CFR, Northeast Asia ) . Market participants said the deal reached Europe to Asia is unlikely , since the second half of this year is expected to be very adequate supply in Asia .(http://www.lubonchem.com supply)
Azamethiphos use
Organophosphate insecticide, miticide. There are contact and stomach poison, is a broad-spectrum insecticide, its quick knockdown and long duration, nike air max goedkoop mainly in cotton, ray ban pas cher fruit and vegetable as well as health, prevention stupid apple moth, nike air max baratas mites, air jordan aphids, pear borer, houseflies, mosquitoes, nike air max baratas cockroaches and other pests parties. Dose Gastric 0.56 ~ 1.12kg / ha.
Potassium sorbate
1 Introduction
Generic hexadiene – ( 2,4 ) – potassium ; 2,4 – potassium sorbate
Formula C6H7KO2
Simple structure CH3CH = CHCH = CHCOOK
Quality standard: National People’s Republic of China GB13736-2008
Commonly known as: Preservatives
ChI = 1/C6H8O2.K/c1-2-3-4-5-6 (7) 8 ;/ h2-5H, 1H3, (H, 7,8) ;/ q; +1 / p-1/b3 -2 +,5 -4 + ;
2 production methods
1 and mainly uses the method. Sorbic acid as raw materials, potassium hydroxide or potassium carbonate for neutralization reaction.
2 sorbic acid was added to the reaction kettle , sorbic acid was then added to 66% by mass of water, was added dropwise a solution of 49% potassium hydroxide at 45 ℃, Ph = 8 until the reaction solution until the reaction is about 45min. Adding a certain amount of carbon, vacuum filtration , at 40 ~ 45 ℃ and the filtrate was evaporated under reduced pressure reaches 3 ~ 4h after heating to 70 ℃ discharge requirements . By centrifugal dehydration crystallization liquor recovery ; finally dried to obtain the product under 105 ℃. [ 1 ]
3 Uses
The main use
Preservatives for food preservatives are acidic reaction with organic acids using antiseptic effect increased . Potassium carbonate or potassium hydroxide and sorbic acid as raw materials. [ 2 ]
Sorbic acid ( potassium ) can effectively inhibit mold , yeast and the activity of aerobic bacteria , so as to effectively extend the storage time of the food and keep the original flavor of the food .
We buy the packaging ( or canned ) food , the ingredients often see one of the words ” sorbic acid ” or ” potassium sorbate ” , people often mistakenly thought to be components of the fruit , ” pear” is . In fact, they are commonly used in food additives ! Whether they have no harm to human body , plain consumption is indeed necessary , the following is the relevant information about the sorbic acid , potassium sorbate for reference only:
Sorbic acid ( chemical name : 2,4 – sorbic acid Formula : C6H8O2 ]
Potassium sorbate ( chemical name : 2,4 – potassium sorbate ] Formula : C6H7KO2)
Sorbic acid, potassium sorbate properties, uses similar : Sorbic acid is recommended by the FAO and WHO efficient and safe preservative widely used in food , beverages, tobacco , pesticides, cosmetics and other industries , as the unsaturated acid, also can be used in resins, spices and rubber industry.
4 Nature
Physical Properties
Potassium sorbate is a white to pale yellow crystalline flake , crystalline granule or crystalline powder , odorless or slight odor, hygroscopic long-term exposure to air, oxidation and decomposition and discoloration. Soluble in water , potassium sorbate , 67.6g/100ml (20 ℃); 5% brine , 47.5g/100ml ( room temperature ) ; 25% sugar , 51g/100ml ( room temperature ) . Dissolved in propylene glycol , 5.8g/100ml; ethanol , 0.3g/100ml. 1% aqueous solution of potassium sorbate PH7 ~ 8.
Spectral characteristics
Using FLS 920 fluorescence spectrometer to study the three-dimensional fluorescence spectra of potassium sorbate solution was found when moved from 320 nm excitation light red 500 nm, fluorescence has two peaks : 485 nm and 565 nm, the former strength significantly greater than the latter , the corresponding the excitation peak was 380 nm and 470 nm.
Fluorescence analysis of these two peaks is potassium sorbate molecule conjugated π bond and non-bonding electron stimulated transitions caused by n , in accordance with its peak at 485 nm the fluorescence intensity with the concentration of (0.05 ~ 12 g / L ) non-linear variation of the concentration of potassium sorbate can be detected . further to fresh apple juice , for example, based on fluorescence spectroscopy to study the feasibility of potassium sorbate was detected in fresh apple juice mass concentration . [ 3 ]
Chemical properties
Combustible , fire exhaust fumes containing potassium spicy . Has a strong inhibitory effect of spoilage bacteria and fungi , and because of the low toxicity than other preservatives , it has become the world ‘s leading preservatives. Under acidic conditions, corrosion can give full play the role of a neutral role when low.
Cosmetic preservatives. An organic acid preservatives. Average amount of 0.5 %. May be mixed with sorbic acid . Although potassium sorbate soluble in water, easy to use, but its pH 1% solution is 7-8 , so there is a tendency to increase the pH of cosmetics , should be taken when using .
Content analysis:
After taking pre- dried sample 0.25g 105 ℃ 3h after ( accurate to 0.1mg). Add 250ml flask with a glass stopper , add 36ml of glacial acetic acid and acetic anhydride 4m1, warm make into a solution . Cooled to room temperature , add crystal violet test solution (TS-74) 2 drops of 0.1mol / L acetic acid solution through the blue-green endpoint titration to acid and to maintain 30s does not disappear. Meanwhile blank test , and make the necessary corrections. Each Ml0.1mol / L perchloric acid is equivalent potassium sorbate (C6H7KO2) 15.02mg.
Toxicity: Continue reading