Properties：The purplish red colour crystal minutely have a deliquescence in the air , and Shui Yi Rongyu ethyl alcohol and third mellow wine minutely dissolves in the ether .
Aqueous solution is for the purple , and becomes Lan Se after the heating , and becomes cool again the recovering purple back .
110-120 ℃ is dehydrationed , the melting point : 80 ℃s .
Use：Being served as the ammonia gas absorbent , agent and other cobalt salt is urged futilely in the visor , electroplating and manufacturing protecting against poisonous substances , and can indicate the moisture absorption level of glue , system atmospheric pressure meter , hydrometer and invisible ink etc .
Packing：25kgs/drum。