文档介绍：SODIUM STEAROYL-2-LACTYLATE
Prepared at the 46th JECFA (1996), published in FNP 52 Add 4 (19
Solubility (Vol. 4) Insoluble in water; soluble in ethanol
Test for sodium Add 10 ml of dilute hydrochloric acid TS to 2 g of the sample, heat for 5 min
in a water bath, filter and neutralize the filtrate with ammonia TS. Retain the
residue from the filter for test C. To the filtrate, add uranyl zinc acetate TS; a
yellow crystalline precipitate appears within a few min.
Test for fatty acids Take the residue from the filter in the test for sodium, add 30 ml of sodium
hydroxide TS, heat for 30 min on a steam bath and filter. Add 20 ml of dilute
hydrochloric acid TS to the filtrate after cooling, extract twice with 30 ml of
diethyl ether, wash the ether solution with 20 ml of water, dry with
anhydrous sodium sulfate and evaporate the ether. The residue melts
between 54 and 69º.Test for lactate (Vol. 4) Passes test
PURITY
Sodium content Not less than % and not more than %
See description under TESTS
Total lactic acid