Molecular Formula: CoSO4 . 7H2O ,Molecular Weight: 281.10 ,Facies: brown yellow or red crystal .purity:98%min,made in china Technical indicators: industrial (in% of the total) COSO4 7H2O 7H2O ≥ 98 Fe ≤ 0.002Zn ≤ 0.001Ni ≤ 0.001 Cu ≤ 0.002 Production Process: cobalt metal and sulfuric acid reactionShanghai liangren chemical co.,ltd is engaged in the manufacture of salt series products of Ni, Co, ...