Customization: | Available |
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Transport Package: | Bag/Drum |
Specification: | 25KG/Drum, 1KG/Bag |
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Audited by an independent third-party inspection agency
Item | Specification | Results |
Appearance | White crystalline powder | White crystalline |
Assay | 99.0%Min | 99.90% |
Melting point | 202.0~210.0ºC | 205-207ºC |
Clarity of water solution | Transpency, colorless, none suspended matters | Pass |
pH value of 1% aqueous solution | 5.0~7.0 | 6.0 |
Specific optical ratation | [α]D20=+175~185º | +180º |
Ar-senic | ≤2 ppm | Not detected |
Hy-droquinone | ≤10 ppm | pass |
Heavy metal | ≤10 ppm | pass |
Loss on drying | ≤0.5% | 0.1% |
Ignition residue | ≤0.5% | 0.04% |
Pathogen | Bacteria:≤300cfu/g Fungus:≤100cfu/g |
<20 <20 |
Conclusion | Conforms with enterprise standard | pass |