三、Nature:
Red crystal with brown,monoclinal crystal.Proportion 1.948
7H2O, lost at 420℃，dissolved in water and methanol,dissolved
in alcohol tiny,easy to effloresce in the air .
四、Use
:
It is used for making cobalt salt 、paint dried catalyst、cobalt
pigment、glazed medicine 、color porcelain and electrooplate,etc.
五、Technology index:
1.The content of Co is no less than 29%.
2.The most Content of foreign matter:(Counted by %)
