2013年8月7日星期三

R-lactic acid of formula


Zinc lactate English name Lactic acid; 2-Hydroxy propionic acid Synonyms 2 - hydroxy acid; α-hydroxy acid; propanol acid formula CH3CH (OH) COOH physical and chemical properties of pure product as a colorless liquid, is a 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, glycerin, insoluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%, the part becomes the lactic anhydride, product often contains 10% to 15% of the milk anhydride. Lactic acid (alias: α hydroxy acid)potassium lactate role of disinfection can be used for air disinfection, per cubic meter 1ml, diluted 10 times with water, set the evaporating dish heating evaporation, doors and windows closed for 30 minutes. CAS No.: 50-21-5 Lactic acid has two optical isomers, as L-and D, where L-naturally present in the human being, can be metabolized by the body. There are many derivatives of lactic acid, including salts and esters, salts, have a high solubility, is a good mineral supplements, but also a component of many drugs, its esters as a natural degradation advantages, are widely used in various kinds of industrial technology and everyday life. R-CH2CH (OH)-COOH.

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