AR

HG/T 3-934-76
项目Item                                                                 分析纯                化学纯
(AR)                    (CP)
含量CrO₃Assay,%                                                 ≥99.0                98.0
水不溶物Insoluble matter in water,%                    ≤0.003             0.01
氯化物(Cl)Chloride,%                                            ≤0.001              0.005
硫酸盐(SO₄)Sulfate,%                                           ≤0.01                0.05
钠(Na)Sodium,%                                                    ≤0.15                0.3
铝(Al)Aluminum,%                                                 ≤0.003               0.01
钾(K)Potassium,%                                                ≤0.05                  0.1
铁(Fe)Iron,%                                                           ≤0.01                 0.02

指标名称                          优质品     一等品       合格品
铬酸酐 （CrO3）%≥    99.7         99.5           99.0
谁不溶物%≤                    0.02        0.03            0.10
硫酸盐 (SO4)%≤            0.06        0.15            0.30
钠（Na）%≤                   0.05