Chemical Properties: white to Lactic acid powder or flake solid block. With a light caramel like odor. Melting point 44 ~ 51 ℃. Insoluble in water (0.5%, 200C), slightly soluble in hot water. After mixing with water and forced to make the dispersion. 2% aqueous suspension of a pH of 4.7. Soluble in ethanol (8.3%, 20 ℃), vegetable oil and hot lard.
Identification Test
Solubility: slightly soluble in hot water (OT042).
Calcium Test: Take dilute hydrochloric acid solution (TS-117) 10ml, plus at 2g sample, heated in a water bath 5min, lactic acid powder, and the filtrate with ammonia solution (TS-13) neutralized. Plus ammonium oxalate solution (TS.24) 5ml, should form a white precipitate which is soluble in dilute hydrochloric acid solution (TS-117), but insoluble in dilute acetic acid solution (TS-2).
Fatty Acid Test: with the "10040, sodium stearoyl lactylate."
Lactate test: (IT-20) were positive.
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