红色结晶体，潮湿空气中易潮解，易溶于水。 

                                                                      
Co(NH2SO3)2 . 4H2O       ≥ 98(%)                                             ≥97.0(%)
铁(Fe)                                   ≤ 0.001                                            ≤0.005
锌(Zn)                                   ≤ 0.05                                               ≤0.05
铅(Pb)                                   ≤ 0.01                                              ≤0.01
Cl-                                         ≤  0.05                                              ≤0.05
SO42-                                   ≤ 0.05                                              ≤0.5
水不溶物(Insoluble matter) ≤ 0.05                                              ≤0.05

主要用于精密电镀电解液。 主要用于精密电镀、印刷线路板电镀等
密封保存