|
DL-TARTARIC
ACID |
 |
| Formal name:2,3-Dihydroxybutanedioic
acid |
|
| Structural formula: |
 |
|
| Molecular formula:C4H6O6 |
|
| Molecular weight:150.09 |
|
| Character:Colorless
crystals or white powder, without odor, with
sour taste, stable in air, compound of equal
quantity of dextrorotatory and levorotatory
tartaric acid, containing one or two molecule
crystalline water and losing water when heated
to 100°C, specific gravity 1.697. Its
solubility in water is 20.6% (20℃), in ether is about 1% and 5.01% in ethanol (25℃) |
|
| Specifications:Complies
with The U.S.A Food and Chemical Code (III) and GB15358-94 |
|
| Uses:This
product is widely used in trades such as
foodstuff, medicine, chemical industry and light
industry etc., and is chiefly used to make the
tartaric acid salts, like antimony potassium
tartrate, potassium sodium tartrate. Served as
beer vesicant and foodstuff sourness agent and
flavoring etc at the foodstuff trade and its
sourness is the citric acid 1.3 times, and
especially is suitable to do the sourness agent
of the grape juice. This article is appraised as
the excellent food additive by the FAO/WHO
experts committee. It also has the very
important effect in tannage, photograph, glass,
enamel and telecommunication equipment etc. |
|
| Packing:25kg
in each woven bag, polyethylene bag or double-kraft
bag. |
|
|
| The
U.S.A Food and Chemical Code (III) |
|
Item |
Index |
|
Content ≥% |
99.7 |
| Arsenic ≤% |
0.0003 |
| Heavy
metals (Pb) ≤% |
0.001 |
| Loss on drying≤% |
0.5 |
| Oxalate sal (C2O4)≤% |
Passed |
| Residue
on ignition(Ash)≤% |
0.05 |
| Sulphate（SO4） |
Passed |
|
|
| GB15358-94 |
|
Item |
Index |
|
monohydrate |
anhydrous |
|
Content ≥% |
99.5 |
99.5 |
| Melting point(℃) |
200~206 |
200~206 |
| Sulphate (SO4) ≤% |
0.04 |
0.04 |
| Heavy
metals (Pb) ≤% |
0.001 |
0.001 |
| Arsenic (As) ≤% |
0.0002 |
0.0002 |
| Oxidizable matter |
Passed |
Passed |
| Loss
on drying ≤% |
11.5 |
0.5 |
| Residue
on ignition(Ash) ≤% |
0.10 |
0.10 |
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