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Q/(HG)SJ 133-91 项目Item 分析纯 化学纯 (AR) (CP) 含量(CdCO3)Assay,% ≥ 98.0 97.0 盐酸不溶物lnsoluble in hydrochloric acid ≤ 0.01 0.02 氯化物(Cl)Chloride,% ≤ 0.01 0.03 硫酸盐(SO4)Sulfate,% ≤ 0.01 0.02 总氮量(N)Total nitrogen,% ≤ 0.10 0.10 铁(Fe)Iron,% ≤ 0.005 0.01 铜(Cu))Copper,% ≤ 0.005 0.01 锌(Zn)Zinc,% ≤ 0.005 0.01 铅(以Pb计)Lead,% ≤ 0.025 0.05 硫化铵不沉淀物Substances not preci- ≤ 0.5 1.5 pitated by ammonium sulfide,%
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