HG/T 3-1305-80
项目ltem 分析纯
(AR)
含量Assay ≥ 70.0% (柱层分析-分光光度法)
pH变色域Visnal transition interval 10.0(黄)-12.0(红)
水溶解试验Solubility in water 合格
灼烧残渣(以硫酸盐计)Ignition residue,% 20-25
98%:
外观Appearance 橙色至棕色粉末
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity ≥98.0% (HPLC area%)
水溶解试验solubility in hot Water 合格
水溶解试验solubility in hot EtOH 合格
干燥损失Drying loss ≤10.0 %
灼烧残渣Ignition residue(Sulfate) 20.0 - 30.0 %(after drying)
pH变色域Transition interval(pH) (红黄色)10.0 - 12.0(黄红色)
吸光度Absorbance(以干基计) ≤0.320(5 mg/L, pH 9.6, 375.0 nm)
Indicator
外观Appearance 橙色至棕色粉末
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity ≥98.0% (HPLC area%)
水溶解试验solubility in hot Water 合格
水溶解试验solubility in hot EtOH 合格
pH变色域Transition interval(pH) (红黄色)10.0 - 12.0(黄红色)
吸光度Absorbance(以干基计) ≤0.320(5 mg/L, pH 9.6, 375.0 nm)
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