質(zhì)量標(biāo)準(zhǔn): Q/(HG)SJ 026-91
項(xiàng)目Item 分析純 化學(xué)純
(AR) (CP)
含量(C6H5COONa)Assay,% ≥99.5 99.0
干燥失重Dring loss,% ≤0.3 0.5
游離酸(以CH5COOH)Free acid,% ≤0.1 0.25
游離堿(以Na2CO3) Free alkali ≤0.1 0.1
硫酸鹽(SO4)Sulfate ,% ≤0.01 0.01
氯化物(Cl)Chloride,% ≤0.01 0.02
砷(As)Arsenic,% ≤0.0002 0.0004
重金屬(以Pb計(jì))Heavy metals,% ≤0.001 0.004
品級(jí)Grade 藥用級(jí)
(符合Ph. Eur., BP,USP, FCC, E211 )
含量assay 99.0-100.5% (calc. to the dried substance)
總雜質(zhì)total impurities
酸度或堿度acidity or alkalinity, complies
可氧化雜質(zhì)oxidizable impurities, complies
多聚核酸polynuclear acid, complies
溶劑殘?jiān)黵esidual solvents, complies
重金屬heavy metals (as Pb) ≤0.001%
含鹵化合物halogenated compounds (as Cl) ≤0.03%
干燥損失loss on drying ≤1% , 105 °C
氯chloride (Cl-): ≤100 ppm
硫酸鹽sulfate (SO42-): ≤100 ppm
砷As: ≤2 ppm
銅Cu: ≤10 ppm
汞Hg: ≤1 ppm
鉛Pb: ≤2 ppm
鋅Zn: ≤10 ppm
溶解性試驗(yàn)suitability for appearance of solution complies