▼▲ 項(xiàng)目 指標(biāo) 醫(yī)藥級 食品級 性狀 Appearance 白色結(jié)晶粉末 White crystalline powder 白色結(jié)晶粉末 White crystalline powder 比旋光度 Specific optical rotation +20.4°~ +21.4° +19.0°~ +21.5° 含量 Assay 98.5%~101.5% ≥98.0% 干燥失重 Loss on drying ≤0.4% ≤1.0% 重金屬 Heavy metals ≤0.001% ≤0.001% 砷 As ---------- ≤0.0001% 透光率 Transmittance ---------- 430nm ≥95.0% 熾灼殘?jiān)?/span> Residue on ignition ≤0.1% ≤0.2% PH值 ---------- 5.0~6.0 氯化物 Chloride 19.0%~19.6% ---------- 硫酸鹽 Sulfate(SO4) ≤0.02% ---------- 鐵 Iron(as Fe) ≤0.001% ---------- 有機(jī)揮發(fā)雜質(zhì) Organic volatile impurities Meet the requirement
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