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- Chemical name: Dextro-rotation-2,3- dihydroxy butanedioic acid
- Synonymos:
- Structural Formula:
- Molecular formula:..............................C4H6O6
- CAS No: [ ]
- Molecular Weight:...............................150.1
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Pharmic grade |
Foods grade |
| Content |
99.7-101% |
101% |
| Specific rotatory power(20) |
+12 to +12.8 |
+11.5 to +13.5 |
| Oxalate |
0.035max |
negative |
| Heavy metal |
0.001max |
0.001max |
| 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 |
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Application:
- 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.
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