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