| Inspection items | Specifications | Results |
| Color | White | White |
| Shape | Crystal or crystalline powder | Crystal |
| Assay (AS C4H6O6) (%) | ≥ 99.5 | 99.9 |
| Melting point ℃ | 200-206 | 205.3-205.5 |
| Arsenic (As) mg/kg | ≤2 | <2 |
| Heavy metals Pb mg/kg | ≤10 | <10 |
| Residue on ignition % | ≤0.1 | 0.02 |
| Loss on drying % | ≤0.5 | 0.07 |
| Readilv oxidizable substances | Pass test | Pass test |
| Sulfate test % | ≤0.04 | <0.4 |
| Conclusion | Through Analysis, the quality of this batch number is approved | |
(1) DL-Tartaric acid is widely used in food, medicine, chemical industry, light industry and other industries.
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