项目
Items
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标准规定
Specification
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检验结果
Result
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【性状】
Appearance
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白色至类白色结晶性粉末
White or off white crystalline powder
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类白色结晶性粉末
White crystalline powder
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溶解度
Solubility
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在水中微溶,在甲醇和乙醇中几乎不溶;在氢氧化钠试液中易溶,在稀盐酸中极微溶解
Slightly soluble in water, practically insoluble in methanol and ethanol,very soluble in sodium hydroxide test solution, very slightly soluble in diluted hydrochloric acid.
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符合规定
Complied
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【鉴别】
Identification
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HPLC
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本品主峰与对照品溶液的主峰保留时间一致.
The retention time of the major peak of the test solution corresponds to that of the standard solution.
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符合规定
Complied
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UV
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在287nm处有最大吸收
Maximum absorption at 287nm
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符合规定
Complied
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IR
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与对照图谱一致
Corresponds to Reference Spectrum
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符合规定
Complied
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氯化物
Chloride
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本品的水溶液显氯化物鉴别的反应
Its water solution present identification tests for chlorides.
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符合规定
Complied
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【检查】
Test
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|
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酸度 PH
Acidity PH
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3.5~4.5
Should be 3.5~4.5
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3.74
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溶液的澄清度Completeness of solution
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应符合规定
Must comply with the specification.
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符合规定
Complied
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吸光度
Absorbance
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不得过0.25
Not more than0.25
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符合规定
Complied
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干燥失重
Loss on drying
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不得过0.5%
Not more than 0.5%
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0.03%
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炽烧残渣
Residue on ignition
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不得过0.1%
Not more than 0.1%
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0.03%
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重金属
Heavy metal
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不得过20ppm
Not more than 20ppm
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Complied
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有关物质
Related substances
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单个杂质
Individual impurity
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不得过0.5%
Not more than 0.5%
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0.02%
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总杂质
Total impurities
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不得过1.0%
Not more than 1.0%
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0.08%
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残留溶剂
Residual solvents
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乙醚
diethyl ether
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不得过0.5%
Not more than 0.5%
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0.03%
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丙酮
acetone
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不得过0.5%
Not more than 0.5%
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N.D
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乙醇
Ethanol
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不得过0.5%
Not more than 0.5%
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N.D
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二甲亚砜
Dimethyl sulfoxide
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不得过0.5%
Not more than 0.5%
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N.D
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N,N-二甲基甲酰胺
N,N-dimethyl formamide
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不得过0.088%
Not more than 0.088%
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N.D
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【含量测定】
Assay
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不得少于89.2%
Not less than 89.2%
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95.1%
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