指标名称            按HG-3-936-76
Cr(NO3)3·9H2O %：≥98.0
水不溶物%： ≤0.02
氯化物（以Cl-计）%：≤0.01
硫酸盐（以SO42-计）%：≤0.02
铝%： ≤0.05
铁%   ≤0.01
钙%： ≤0.01
钠%： ≤0.1
钾%： ≤0.1

质量指标：HG3-936-76
项目Item                                                            分析纯             化学纯
(AR)                  (CP)
含量［Cr(NO3)3·9H2O］Assay,%             ≥ 99.0             98.0
铝(Al)Aluminum,%                                            ≤ 0.02             0.05
钾(K)Potassium,%                                           ≤ 0.05              0.1
钙(Ca)Calcium,%                                            ≤ 0.005             0.01
铁(Fe)Iron,%                                                     ≤ 0.005            0.01
水不溶物Insoluble matter in water,%             ≤ 0.005            0.02
氯化物(Cl)Chloride,%                                     ≤ 0.005             0.01
硫酸盐(SO4)Sulfate,%                                   ≤ 0.01                0.02
钠(Na)Sodium,%                                             ≤ 0.05                0.1