性状  蓝绿色结晶。略有风化性。能溶于10.3份的水，几乎不溶于醇。
   
质量标准  
Q/(HG)SJ 735-1997
项目Item                                                  分析纯   化学纯
                                                            (AR)    (CP)
含量［NiSO4·(NH4)2SO4·6H2O］Assay,%                    ≥ 98.0    98.0
水不溶物Insoluble matter in water,%                      ≤ 0.005   0.01
氯化物(Cl)Chloride,%                                     ≤ 0.001   0.005
铁(Fe)Iron,%                                             ≤ 0.0005  0.001
钴(Co)Cobalt,%                                           ≤ 0.01    0.05
锌(Zn)Zinc,%                                             ≤ 0.005   0.02
重金属(以Pb计)Heavy metals,%                             ≤ 0.002   0.01
硫化铵不沉淀物(以硫酸盐计)Substances not
precipitated by ammonium sulfide,%                       ≤ 0.05    0.1

贮存  密封保存。
用途  电镀、分析试剂。
联合国编号  9138
Risk：  R22- R40- R42/43-
Safety :  S22- S36/37 -