產(chǎn)品展示
優(yōu)質(zhì)供應(yīng)
詳細內(nèi)容
分子式為C4H10O4
項目Item | 指標 Index |
外觀Appearance | 白色結(jié)晶性粉末或顆粒 White crystalline powder |
含量(以干基計)Assay (on dry basis) | ≥99.5% |
干燥失重Loss on drying% | ≤0.20% |
熾灼殘渣Residue on ignition | ≤0.1% |
熔點Melting range | 118~122℃ |
重金屬(以Pb計)Heavy metal(pb) | ≤1.0 mg/kg |
砷 Arsenic(count as As) mg/ | ≤0.3 mg/kg |
菌落總數(shù)Bacterium total | ≤300 cfu/g |
大腸菌群 E.Coli, | ≤30 MPN/100g |
致病菌Pathogenic bacteria | 不得檢出Negative |