Sodium Lactate

Physical Chemistry

Sodium lactate is a colorless or slightly yellow transparent syrupy liquid, has a strong water absorption capacity. Odorless or slightly special smell, slightly salty and bitter. Dissolved in water, ethanol and glycerin. The general concentration is 60% to 80% (by weight).

Toxicity of sodium lactate: adi values are not restricted and are not suitable for infants suffering from lactose intolerance.

Preparation Method

In the cooling state to add sodium hydroxide to the lactic acid neutralization, set below 50 degrees c vacuum concentration to remove 80% of the moisture after about a week, and then with sodium hydroxide neutralized, and then diluted to a certain concentration of the finished product.

Identification and Content Analysis

Differential

The sample is grayed out and the ash should be alkaline. If acid is added to the ash, bubbles should occur. The sample tested positive for lactic acid and sodium (it-20 and it-28).

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Content Analysis

Method 1: accurately weigh the sample about 3g, evaporate to dry in the water bath, and then determine by the organic acid-alkali salt quantification method (gt-2). 0.25 moles per milliliter is equivalent to 56.03 mg of sodium lactic acid per litre of sulfate;

Method 2: accurately weigh the sample equivalent to 300 mg of sodium lactic acid, plus a mixture of 1 serving of acetic anhydride and 5 servings of ice acetic acid 60 ml, mixed, left to rest about 20min. Potential titration is performed with 0.1mol/l perchloric acid ice acetic acid. At the same time, the blank test is carried out and the necessary correction is made. 0.1 moles per milliliter is equivalent to 11.21 mg of sodium lactic acid per elevated chloric acid.

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