Name | dl-lactic acid sodium salt |
Synonyms | PURASAL(R)S Sodium lactate SODIUM L-LACTATE dl-lactic acid sodium SODIUM L-LACTATE SOLUTION dl-lactic acid sodium salt sodium 2-hydroxypropanoate Sodium DL-lactate solution SARCOLACTIC ACID SODIUM SALT SODIUM-L-2-HYDROXY-PROPIONATE dl-lactic acid sodium salt solution |
CAS | 312-85-6 72-17-3 |
EINECS | 206-231-5 |
InChI | InChI=1/C3H6O3.Na/c1-2(4)3(5)6;/h2,4H,1H3,(H,5,6);/q;+1 |
Molecular Formula | C3H5NaO3 |
Molar Mass | 112.06 |
Density | 1.33 |
Melting Point | 163-165°C(lit.) |
Solubility | It is miscible with water and alcohol, and its aqueous solution is neutral |
Appearance | Colorless liquid |
Color | 50 APHA max. |
PH | 7.48(1 mM solution);7.85(10 mM solution);8.3(100 mM solution);8.61(1000 mM solution) |
Storage Condition | 2-8°C |
Stability | Stable. |
Sensitive | Easily absorbing moisture |
Refractive Index | 1.422-1.425 |
MDL | MFCD00065400 |
Physical and Chemical Properties | A colorless or nearly colorless syrup-like liquid. Melting point of 17 degrees C, boiling point of 140 degrees C (decomposition). It is miscible with water and alcohol, and its aqueous solution is neutral. No odor, easy to absorb moisture. |
Safety Description | 24/25 - Avoid contact with skin and eyes. |
WGK Germany | 1 |
RTECS | OD5680000 |
FLUKA BRAND F CODES | 3-10 |
colorless or yellowish transparent syrup-like liquid, slightly salty and bitter. Miscible in water, ethanol and glycerol. Has a strong ability to absorb water.
sodium hydroxide is added to lactic acid for neutralization, and after concentration, neutralization and dilution with alkali are performed to obtain a finished product.
This product contains sodium lactate (C3H5Na03) not less than 40.0%(g/g).
used as emulsifier, humectant, flavor improver, quality improver, antioxidant synergist and pH regulator. It can also be used instead of sodium benzoate as a preservative in the food industry. The dosage was added as needed for normal production.
This product is sodium salt and lactate identification reaction (General 0301).
take this product, add water to make a solution containing 0.112g of sodium lactate per lml, heat it in a water bath for 30 minutes, let it cool, and measure it according to law (General rule 0631). The pH value should be 6.5~7.5.
This product should be clear and colorless, such as color, and yellow 1 Standard Colorimetric liquid (General Principles 0901 The first method) comparison, not deeper.
take l.Og of this product and check it according to law (General rule 0801). Compared with the control solution made of 5.0 ml of standard sodium chloride solution, it should not be more concentrated (0.005%).
take 2.0g of this product and check it according to law (General rule 0802). Compared with the control solution made of 0.010% of standard potassium sulfate solution, it should not be more concentrated ().
take l.Og of this product, make 5ml with appropriate amount of water, mix well, add 1ml of calcium chloride test solution, heat in water bath for 5 minutes, and do not produce turbidity.
Take 40g of this product, precision weighing, set the Kjeldahl Flask, add 10ml of water, carefully add 30ml of 5mol/L potassium hydroxide solution, water vapor distillation, add 10ml of ethanol to a 100ml measuring flask as an absorption solution, collect the distillate to about 95ml, dilute to the scale with water, and shake to obtain a test solution. Another 10 mg of methanol was weighed accurately, and the mixture was placed in a 10% measuring flask, diluted to the scale with ethanol solution, and then shaken to form a reference solution. Take 10ml of the reference solution and 10ml of the test solution respectively, put them in 25ml measuring flask, and add potassium permanganate-phosphoric acid solution (take 3g of potassium permanganate, add 15ml of phosphoric acid and 70ml of water for dissolution, dilute to 100ml with water, then obtain) 5ml, mix well, stand for 15 minutes, add each oxalic acid-sulfuric acid solution (take 50ml of water, carefully add 50ml of sulfuric acid, mix well, cool down, add 5g of oxalic acid, dissolve, (2ml), stirred with a glass rod until the solution was colorless, added with 5ml of magenta sulfite solution, diluted with water to scale, shaken, and left to stand for 2 hours. The absorbance was measured at a wavelength of 0401 nm by ultraviolet-visible spectrophotometry (general rule) with water as a blank. The absorbance of the test solution shall not be greater than that of the reference solution (0.025%).
take 0.5g of this product, Add 10ml of water, add 6mL of Alkaline copper tartrate test solution, heat and boil for 2 minutes, and no red precipitate will be generated.
take an appropriate amount of this product (about 2.0g of sodium lactate), put it in a quartz crucible (or europium crucible), and check it according to law (General Principles 0821, second method), heavy metals should not be more than 10 parts per million.
take an appropriate amount of this product (about equivalent to sodium lactate l.Og), add hydrochloric acid 5ml and water 23ML, according to the law inspection (General Principles 0822 The first law), should comply with the provisions (0.0002%).
take about 0.2g of this product, accurately weigh it, put it in an Erlenmeyer flask, dry it at 105°C for 1 hour, add 15ml of glacial acetic acid and 2ml of acetic anhydride, heat it to dissolve it, and let it cool, add 1 drop of crystal violet indicator solution and use perchloric acid titration solution (0.1 mol/L titration to solution blue-green, and the results of the titration with blank test correction. Each 1 ml of perchloric acid titration solution (0.1 mol/L) corresponds to 11.21mg of C3H5Na03.
alkaline sodium salt.
light shielding, sealed storage.
This product is a sterile aqueous solution of sodium lactate. The C3H5Na03 content shall be between 95.0% and 110.0% of the labeled amount.
This product is a clear colorless liquid.
This product is sodium salt and lactate identification reaction (General 0301).
take 1 ml of this product and put it in an Erlenmeyer flask, dry it at 105°C for 1 hour, and start from "add 15ml of glacial acetic acid and 2ml of acetic anhydride" according to the method under the item of sodium lactate solution content determination, determination according to law. Each l of perchloric acid titration solution (0.1 mol/L) corresponds to 11.21mg of C3H5Na03.
Same as sodium lactate solution.
(l)10ml:1.12g (2 )20ml:2.24g (3)50ml:5.60g
shading, sealed storage.
This product is a sterile aqueous solution of sodium lactate, sodium chloride, potassium chloride and calcium chloride, containing sodium lactate (C3H5Na03) should be 93.0% ~ 107.0% of the label amount; Containing sodium chloride (NaCl), potassium chloride (KCl), calcium chloride (CaCl2 · 2H20)) should be between 95.0% and 105.0% of the label amount.
This product is a clear colorless liquid.
This product is calcium salt identification (2) reaction, sodium salt identification (1) reaction, potassium salt, lactate and gasification identification (1) reaction (General 0301).
humoral, electrolyte, acid-base balance regulator.
(l)250ml (2)500ml (3)1000ml
sealed storage.
EPA chemical information | Information provided by: iaspub.epa.gov (external link) |
food additive | sodium lactate is made of pure natural high-quality lactic acid and sodium hydroxide. it is colorless or yellowish syrup-like liquid, miscible with water and hygroscopic. 1. Sodium lactate has the following characteristics: (1) reduces water activity. (2) It has the function of water retention, controls the effluent and increases the yield. (3) In frozen meat products, fat oxidation is effectively inhibited. (4) through the interaction with protein, keep protein moisture, increase protein flexibility, make protein tissue expansion, prevent product aging. (5) Sodium lactate is a strong base and weak acid salt, which has a good buffering effect and can effectively adjust the pH value of the product. (6) The US Food and Drug Administration considers "safe and non-toxic substances" (GRAS). 2. Moisturizing properties of sodium lactate Sodium lactate has a strong moisturizing and prevent water loss effect. Compared with other moisturizers, it is less affected by humidity changes and can also play a high-efficiency moisturizing effect under low temperature and dry conditions. 3. Sodium lactate can inhibit the growth of microorganisms Sodium lactate can ingest a large amount of free water in food, effectively reduce the water activity in food, inhibit the growth and reproduction of microorganisms, and prolong the shelf life of food. |
prescription application | is suitable for correcting metabolic acidosis. Used as a buffer in peritoneal dialysis fluid. It is used for hyperkalemia with severe arrhythmia and QRS wave widening. Used to alkalize urine, prevent and treat uric acid stones, baby enteritis, etc. Intravenous drip: metabolic acidosis: the dosage should be calculated according to the patient's alkali deficiency. the volume (mL) of sodium lactate (mol/L) required = alkali deficiency (mmol/L)× 0.3 × body weight (kg). At present, this drug is not often used to correct metabolic acidosis. Hyperkalemia: 40~60mL of 11.2% injection of this drug can be given intravenously for the first time, and then administered as appropriate. Patients with severe hyperkalemia should be administered under ECG monitoring, and sometimes the dosage needs to be as high as 200mL to be effective. Attention should be paid to monitoring to prevent hypersodium and heart failure. |
properties | sodium lactate is colorless or yellowish transparent slurry liquid, with strong water absorption ability, odorless or slightly special smell, slightly salty and bitter taste. Miscible with water, ethanol and glycerol, the general concentration is 60 ~ 80%. |
Use | Sodium lactate is a new type of antiseptic and preservative. It is mainly used in meat and poultry products and has a strong inhibitory effect on meat bacteria. For example, Escherichia coli, Botox, Listeria monocytogenes, etc., through the inhibition of pathogenic bacteria in food, thereby enhancing the safety of food, enhancing and improving the flavor of meat, extend shelf life. Sodium lactate has good dispersibility in raw meat, and has good adsorption to water, so as to effectively prevent dehydration of raw meat, and achieve the effect of preservation and moisture preservation. In addition, sodium lactate also has a fresh-keeping effect on flour products. As a medicine, it is used to relieve acidosis caused by diarrhea, dehydration, diabetes, nephritis and other diseases. It is also used as a condiment, a plasticizer for casein plastics, an antifreeze, a humectant, a substitute for glycerin, and an anti-corrosion agent for alcohol antifreeze. |
production method | dissolve sodium carbonate (or sodium hydroxide) in water, slowly add lactic acid, heat until boiling to make carbon dioxide escape, adjust pH to 7, add activated carbon to decolorize, filter, and concentrate the filtrate to 25 ℃ to obtain sodium lactate. |