Specification :

Formula: CoCl2.6H2O
CAS No.: 7791-13-1
M.W.: 237.93

Properties: Pink or mauve crystal belonging to monoclinic system, density: 1.924g/ cm3, melting point: 86° C, stable under room temperature. It turns blue when heated and turns red in the moist air by cooling. Freely soluble in water, alcohol, aether, acetone and glycerin. It changes into anhydride ( blue power) when the crystal water is lost.

Specification( % ) :
Assay( Co) 24.0% min
Iron( Fe) 0.003 % max
Nickel( Ni) 0.002 % max
Zinc( Zn) 0.002% max
Ca 0.002% max
Copper( Cu) 0.002% max
Magnesium( Mn) 0.002 % max
Mg 0.002% max
Na 0.002% max
Pb 0.002% max
water insoluble matter 0.01% max
Sulfate( SO4 ) 0.02% max
Nitrate ( NO3 ) 0.02% max

Application: Used in producing barometrograph, gravimeter in instruments manufacturing industries, paint drier in coating industry, gas defense mask in national defence industry, sympathetic ink, cobalt chloride test paper, allochroic silicagel and nitrogen absorbent. Collocated the feedstuff in stockbreeding,