Lactic acid

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Lactic acid
Posting date : Jun 27, 2011
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29-
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Pure lactic acid is a colorless liquid, industrial products is colorless to pale yellow liquid. Odorless, hygroscopic. The relative density of 1.2060 (25 / 4 ℃). Melting point 18 ℃. Boiling point 122 ℃ (2kPa). Refractive index nD (20 ℃) ​​1.4392. With water, ethanol, glycerol immiscible, insoluble in chloroform, carbon disulfide, and petroleum ether. Thermal decomposition under normal pressure, concentrated to 50%, part of the milk into acid anhydride, the products often contain 10% -15% of the milk anhydride

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