DL-TARTARIC ACID
Molecular formula
C4H6O6
Description
Colorless crystals or white powder, compound of equal quantity of dextro-rotatory and levo-rotatory tartaric acid, containing one or two molecule crystalline water and losting water when heated to 100°C. Odorless, with acidic taste, stable in air, relative density 1.697. Its solubility in water is (20.60g/100g), in ether is about 1% and 5.01 in ethanol(25°C).
Specification
JSFA-V
Item
Index
Content > %
99.5~99.7
Melting Point  
200~206 °C(decomposing)
Sulphate (SO4)≤ %
0.048
Heavy metals(on Pb) ≤ %
0.001
Arsenic (As) ≤ %
0.0004
Loss on drying (silica gel,3h) ≤ %
0.5
Residue on ignition (2g) ≤ %
0.1
BP 93rd Edition
Item
Index
Content %
99.5~101.0
Calcium (Ca) ≤ %
0.02
Heavy metals (on Pb) ≤ %
0.001
Chloride (Cl) ≤ %
0.01
Sulphate (SO4) ≤ %
0.015
Oxalate (C2O4)   ≤ %
0.035
Loss on drying ≤ %
(100 to 105°C constant weight)
0.2
US FCC (III)
Item
Index
Content > %
99.7
Arsenic ≤ %
0.0003
Heavy metals (on Pb) ≤ %
0.001
Loss on drying ≤ %
0.5
Oxalate (C2O4)
qualified
Residue on ignition ≤ %
0.05
Sulphate (SO4)
qualified
Use
Widely used in food, medicine, chemistry and light industry,etc., mainly used to manufacture tartaric acid salts, such as potassimony tartrate (diuretic), potassium soldium tartrate (dilter salt) and used as beer foaming agent. Also applied in tanning, photo, glass, enamel and telecom materials industries. Its acidity is as 1.3 times as citric acid, so specially as acidifying agent for grape juice.
Packaging
In 25Kg P/E bags covered with woven bags or kraft bags,or in 25Kg paper drums lined with P/E bags. We also can pack goods as your request.
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