AR / 4N / SP  / 97% / 98%
Co(NO3)2 · 6H2O            ≥ 98                     ≥97.0
镍(Ni)                                 ≤ 0.05                     ≤0.05
铜(Cu)                                ≤ 0.005                   ≤0.001
铁(Fe)                                ≤ 0.005
锰(Mn)                               ≤ 0.005
锌(Zn)                                ≤ 0.01                      ≤0.003
钙(Ca)                               ≤ 0.01
镁(Mg)                               ≤ 0.01
钠(Na)                               ≤ 0.002
Cl-                                     ≤ 0.005                    ≤0.005
SO42-                               ≤ 0.01
水不溶物(Insoluble matter) ≤ 0.02                  ≤0.02

QB/T　15898-1995
项目Item　　　                                                                分析纯　      化学纯
(AR)               (CP)
含量［Co(NO3)2·6H2O］Assay,%                           ≥99.0            97.0
铁(Fe)Iron,%                                                                    ≤0.0005       0.003
镍(Ni)Nickel,%                                                                ≤0.05            0.5
铜(Cu)Copper,%Manganese,%                                   ≤0.002          0.01
锌(Zn)Zinc,% Manganese,%                     　　            ≤0.05            0.1
硫化铵不沉淀物(以硫酸盐计)Substances not
precipitated by ammonium sulfide,%                          ≤0.1　   　  0.5
水不溶物Insoluble matter in water,%                          ≤0.005          0.01
氯化物(Cl)Chloride,%                                                  ≤0.005          0.01
硫酸盐(SO4)Sulfate,%                                                 ≤0.005          0.02
铵(NH4)Ammonium,%                                                 ≤0.2                --
锰(Mn)Manganese,%                                                   ≤0.005