| CAS No.: | 97-67-6 |
|---|---|
| Formula: | C4h6o5 |
| EINECS: | 201-766-0 |
|
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| ITEMS | STANDARD |
| Appearance | White crystals or crystalline powder |
| ASSAY,w% | ≥99.0 |
| D-malic acid,ppm | <50 |
| Specific rotation | -1.6~-2.6 |
| Burning residue,w/% | ≤0.10 |
| Clarification | Pass the test |
| Sulfate(SO4),w/% | ≤0.02 |
| Chloride(in terms of Cl),w/% | ≤0.004 |
| Fumaric,w/% | ≤0.5 |
| Maleic acid,w/% | ≤0.05 |
| Heavy Metal (Pb+)(mg/kg) | ≤10 |
| Lead,mg/kg | ≤2 |
| Arsenic(AS),mg/kg | ≤1 |
| Cadmium,ppm | ≤1 |
| Iron,ppm | ≤10 |
| Hydrargyrum(Hg),ppm | ≤1 |
| Sugar Test | PASS |
| Cyanide,ppm | ≤1 |
| Testing Item | Standard | Result |
| Characters | White crystalline powder | White crystalline powder |
| Content (on dry basis) (%) | ≥99.5 | 99.71 |
| 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 (%) | ≤0.5 | 0.38 |
| Residue on ignition (%) | ≤0.1 | 0.06 |
| Melting point (ºC) | 200~206 | 205 |
| Note: Special requirements of particle size should be negotiated by both suppliers and customers | ||
Polifar group is established in beautiful and economically developed city Nanjing in 2013.
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