檢驗(yàn)項(xiàng)目
Test Items
標(biāo)準(zhǔn)規(guī)定
Specifications
檢驗(yàn)結(jié)果
Test Results
外觀
Appearance
白色或灰色結(jié)晶性粉末
White to off-white crystalline powder
灰白色結(jié)晶性粉末
White crystalline powder
溶解性
Solubility
在水中幾乎不溶,在無水乙醇中微溶
Practically insoluble in water, slightly soluble in ethanol
符合規(guī)定
Conforms
水分Water (K.F.)
≤0.5%
0.23%
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Residue on ignition
0.22%
相關(guān)物質(zhì)
Related substances
單雜不大于0.5%
Single impurity ≤0.5%
總雜質(zhì)不大于1.0%
Total Impurities≤1.0%
0.80%
純度(By HPLC)
Purity
不小于99%
Not less than 99%
99.20%
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