 Chemical name : dextro-rotation-2,3- dihydroxy butanedioic acid
Molecular formula : C4H6O6
Molecular weight :150.1
Use : mainly used in chemical preparation of sour, chemical preparation of resolution and pharmaceutical materials. It can be used in high-level candy, cold drink and wine in food industry, also used in preservative and stabilizer. In textile industry it can be used in resist agent of printing and dying.
Index name |
Pharmaceutical grade |
Foods grade |
Industry grade |
| Content |
99.7-101min |
101min |
(On dry base) |
| Specific rotatory power(20°C) |
+12° to +12.8° |
+11.5° to +13.5° |
|
| Heavy metal |
0.001max |
0.001max |
|
| Oxalate |
0.035max |
negative |
|
| Sulfate ash |
0.1max |
0.1max |
|
| Sulfate (SO4) |
0.015max |
0.05max |
|
| Loss on drying |
0.2max |
0.5max |
|
| Chloride(Cl) |
0.01max |
0.01max |
|
| Calcium(Ca) |
0.02max |
|
|
| Arsenic(As) |
0.0003max |
0.0002max |
|
| Melting point |
168-170°C |
|
|
Usage:Reagent,animalcule culture medium and medicine.
Packing:25kg in woven bag lined with polyethylene bag. |
