|
DL-tartaric acid
Description:
Colorless crystals or white power, 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 100C.
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 degree).
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 (silicagel,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 105degree 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 |
Application: Widely used
in food, medicine, chemistry and light industry,etc., mainly used to manufacture tartaric acid salts, such as
potassimonytartrate (diuretic), potassium soldium tartrate (dilter salt) and used
asbeer foaming agent. Also applied in tanning, photo, glass, enamel
andtelecom materials industries. Its acidity is as 1.3 times as citric
acid,so specially as acidifying agent for grape juice.
Packaging: In 25Kg or 50Kg P/E bags covered with woven bags.
|
