D Tartaric Acid

Cas Number


Other Names

Tartaric acid

2,3-Dihydroxysuccinic acid

Tartaric acid

Threaric acid

Racemic acid

Uvic acid

Paratartaric acid

The formula



Tartaric acid is a white crystalline organic acid that occurs naturally in many plants, most notably in grapes. Its salt, potassium bitartrate, commonly known as cream of tartar, develops naturally in the process of winemaking. Naturally occurring tartaric acid is chiral, and is a useful raw material in organic chemical synthesis. The naturally occurring form of the acid is dextrotartaric acid or D-(-)-tartaric acid.

Physical and Chemical Properties
Physical state and appearance White crystalline powder
Boiling Point 275 °C
Flash point 210 °C
Melting Point 172-174
Specific Gravity 1.76
Assay 99.5 – 101.0
Specific rotation -12.0º – -12.8º
Heavy metal (pb) ≤ 0.001
Chloride (cl) test ≤ 0.01
Oxalate (h2c2o2) test ≤ 0.035
Sulfate (so4) test ≤ 0.015
Calcium test ≤ 0.02
Loss on drying ≤ 0.2
Sulfate cinder ≤ 0.1

1. D-Tartaric acid is widely used as beverages and other food acidifier, similar to the use and citric acid.

2. D-Tartaric acid is used for chromatographic analysis of reagent and a masking agent. It also used as split agent for pharmaceutical, food additives, chemical and biological reagents.

3. This product is widely used in food industry, such as beer foam, food sour agent, Jiao flavor agent and used in soft drinks, candy, fruit juice, sauces, cold dish, and baking powder and so on. This product is in line with Japanese food additives Kimisada book.

4. Is mainly used as sour agent, biochemical reagents, racemic materials splitting agent, medicine splitting agent of beverage, sugar, bread, and gelatin. Besides it can also be used as splitting agent, salt and ester of photography, can-making, printing, dyeing, and ceramics.