|
Chemical Name : 2,3-Dhydroxybutanedioic acid
| Structural
Formula : |
 |
Molecular formula : C4H6O6
Molecular weight : 150.09
 Character : Colorless crystals or
white power, without odor, with sour taste, stable
in air, compound of equal quantity ofdextro-rotatory
and levo-rotatory tartaric acid, containing one or
two molecule crystalline water and losting water when
heated to 100°C, specific
gravity 1.697. Its solubility in ether is about 1%
and 5.01(25°C) in ethanol,
in water is 20.60(20°C).
Uses : Widely used
in food, medicine, chemistry and light industry, etc.,
Mainly sed to manufacture tartaric acid salts, such
potassium sodium tartrate 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.
Packing : 25kg complex bags lined
with double-layered kraft paper bags and film bag.
Storage : Keep in the clear and
dry storage shed.
Specifications : Complies with US
FCC(III) &GB15358-94.
BP98
| Item |
Index |
| Content% |
99.5-101.0 |
| Ca≤% |
0.02 |
| Heavy metals(Pb)≤% |
0.001 |
| Chloride (Cl)
≤% |
0.01 |
| Sulphate (SO4)
≤% |
0.015 |
| Oxalate (C2O4)≤% |
0.035 |
| Loss on drying
=% |
0.2 |
US FCC(III)
| Item |
Index |
| Content %≥ |
99.7 |
| Arsenic (As)
%≤ |
0.0003 |
| Heavy metals(Pb)
%≤ |
0.001 |
| Loss on drying
≤% |
0.5 |
| Oxalate(C2O4) |
Passed |
| Residue on
ignition %≤ |
0.05 |
| Sulphate(SO4) |
Passed |
GB15358-94
| Item |
Index |
| monohydrate |
anhydrous |
| Content
%≥ |
99.5 |
99.5 |
| Melting point |
200-206°C |
200-260°C |
| Sulphate(SO4)
%≤ |
0.04 |
0.04 |
| Heavy
metals (Pb) %≤ |
0.001 |
0.001 |
| Arsenic (As)%≤ |
0.0002 |
0.0002 |
| Oxidable
matter |
Passed |
Passed |
| Loss on
drying %≤ |
11.5 |
0.5 |
| Residue on ignition %≤ |
0.10 |
0.10 |
|
DL-Tartaric
Acid 
