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酒石酸

IUPAC Name	: 2,3-Dihydroxybutanedioic Acid
Cas Number	: 87-69-4
HS Code	: 2918.12.00
Formula	: HOOC(CHOH)₂COOH

Basic Info

Appearance Name	: White Crystalline Powder
Common Names	: Tartaric Acid
Packaging	: 25 kg HDPE bag, 25 kg paper bag

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Technical Document

An Overview of Tartaric Acid

Tartaric acid is a white crystalline diprotic aldaric acid. It is predominantly found naturally in several plants, particularly bananas, grapes, and tamarinds. It is a useful raw material in organic chemistry for synthesizing other chiral molecules.

Manufacturing Processes

Tartaric acid is obtained from a naturally-occurring component of lees, a solid by-product of fermentation. The former by-products mostly consist of potassium bitartrate (KHC₄H₄O₆). This potassium salt is converted to calcium tartrate (CaC₄H₄O₆) upon treatment with milk of lime (Ca(OH)₂):

KO₂CCH(OH)CH(OH)CO₂H + Ca(OH)₂ → Ca(O₂CCH(OH)CH(OH)CO₂) + KOH + H₂O

Higher yields of calcium tartrate are obtained with the addition of calcium chloride. Calcium tartrate is then converted to tartaric acid by treating the salt with aqueous sulfuric acid.