| Properties | Colorless semi-transparent crystal or white fine to coarse crystalline powder with sour taste. | ||
| Chemical name | (2S,3S)-2,3-dihydroxybutanedioic acid | ||
| Molecular formula | C4H6O6 | ||
| Structural formula |  |
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| Molecular weight | 150.09 | ||
| Quality index |
Crystal (C4H6O6·H2O) | Anhydride (C4H6O6) | |
| Content | ≥99.5% | ≥99.5% | |
| Melting range | 200～206 | 200～206 | |
| Heavy metal (Pb) | ≤0.001% | ≤0.001% | |
| Ignition residue | ≤0.1% | ≤0.1% | |
| Heating loss | ≤11.5% | ≤0.5% | |
| Arsenic (As) | ≤0.0002% | ≤0.0002% | |
| Readily oxidizable substance | Pass the test | Pass the test | |
| Sulfate test | ≤0.04% | ||
| Main functions and uses | This product is widely used in food, pharmaceutical, chemical, light industry and other industries as beer foaming agent, food sour agent, and flavoring agent. It pays an important role in the industries such as tannking, photography, glass, enamel, telecommunication apparatus, and etc. | ||
| Packing | 25KG composite paper bag lined with PE bag, 20' container can hold 20 tons (pallet). | ||
| Storage | Keep in dry, cool and shading place. | ||
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