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lactic acid food grade

Product name lactic acid food grade
GOST 490-79
CAS 50-21-5

Lactic acid (2-hydroxypropanoic acid, also known as milk acid) - colorless crystals. It is a chemical compound that plays a role in several biochemical processes. Lactic acid is chiral and has two optical isomers. Due to high hygroscopicity lactic acid often is used as concentrated water solutions. Lactic acid is fully miscible with water, ethanol, practically insoluble in benzene, chloroform. In presence of mineral acids lactic acid dehydrates into cyclic dimeric lactone, also known as lactide.

Production.

  • 2-chloropropionic acid or its salts (100 °C) or lactonitrile CH3CH(OH)CN (100 °C, H2SO4) hydrolysis with following purification through esters formation (esterification-isolation-hydrolysis).
  • Propylene oxidation by nitrogen oxides (15-20°C) with following treatment with H2SO4;
  • Interaction of CH3CHO with CO (200 °C, 20 MPa);

    Uses.

  • Lactic acid is used in a variety of food stuffs to act as an acidity regulator.
  • Lactic acid is popularly known as an AHA in the cosmetics industry.
  • As reagent in pickle coloration;
  • Drugs and plasticizers synthesis;
  • Now more and more attention is attracting biodegradable polyesters sythesis. A variety of catalysts can polymerise lactide to either heterotactic or syndiotactic polylactide, plastic material that claim biodegradability. It is claimed that this nature processes causes rapid breakdown of the plastic materials into CO2 and H2O. Substitution of polyethylene, polypropylene or PET with biodegradable polymers can solve many problems relating to environment pollution.

  • Manufacturer(s) OJSC Zadubrovsky starch and lactic acid plant
    Chemical structure of lactic acid

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