质量标准:项目ltem 分析纯 化学纯
(AR) (CP)
含量(C4H5KO6),% ≥99.5 99.0
澄清度试验Clarity 合格 合格
盐酸不溶物Insoluble matter in
hydrochloric acid,% ≤0.005 0.01
氯化物(Cl)Chloride,% ≤0.001 0.003
硫酸盐(SO4)Sulfale,% ≤0.005 0.01
磷酸盐(PO4)Phosphate,% ≤0.002 --
铵盐(NH4)Ammonium,% ≤0.005 0.01
钠(Na)Sodium,% ≤0.02 --
铁(Fe)Iron,% ≤0.001 0.005
重金属(以Pb计)Heavy metals,% ≤0.001 0.005
ACS级
项目名称 ACS Grade
含量(C4H5KO6)Assay 99.0-101.0%
氨水不溶物Insoluble matter in ammonium hydroxide ≤0.005%
氯化物(Cl)Chloride ≤0.005%
铵盐(NH4)Ammonium ≤0.01%
硫酸盐(SO4)Sulfate ≤0.01%
钙(Ca)Calcium ≤0.05%
钠(Na)Sodium ≤0.05%
重金属(以Pb计)Heavy metals ≤0.001%
铁(Fe)Iron ≤0.002%