质量标准: Q/(HG)SJ 026-91
项目Item 分析纯 化学纯
(AR) (CP)
含量(C6H5COONa)Assay,% ≥99.5 99.0
干燥失重Dring loss,% ≤0.3 0.5
游离酸(以CH5COOH)Free acid,% ≤0.1 0.25
游离碱(以Na2CO3) Free alkali ≤0.1 0.1
硫酸盐(SO4)Sulfate ,% ≤0.01 0.01
氯化物(Cl)Chloride,% ≤0.01 0.02
砷(As)Arsenic,% ≤0.0002 0.0004
重金属(以Pb计)Heavy metals,% ≤0.001 0.004
品级Grade 药用级
(符合Ph. Eur., BP,USP, FCC, E211 )
含量assay 99.0-100.5% (calc. to the dried substance)
总杂质total impurities
酸度或碱度acidity or alkalinity, complies
可氧化杂质oxidizable impurities, complies
多聚核酸polynuclear acid, complies
溶剂残渣residual solvents, complies
重金属heavy metals (as Pb) ≤0.001%
含卤化合物halogenated compounds (as Cl) ≤0.03%
干燥损失loss on drying ≤1% , 105 °C
氯chloride (Cl-): ≤100 ppm
硫酸盐sulfate (SO42-): ≤100 ppm
砷As: ≤2 ppm
铜Cu: ≤10 ppm
汞Hg: ≤1 ppm
铅Pb: ≤2 ppm
锌Zn: ≤10 ppm
溶解性试验suitability for appearance of solution complies