Insoluble in water or ethanol, but soluble in acids. After reacting with hydrogen at a comparatively low temperature range (125 to 250 degrees Centigrade), it can be deoxidized into tricobalt tetraoxide, cobalt monoxide or metallic cobalt powder.
Don't be dissolve in the water, ether, dissolve in sour, can be become by the hydrogen revivification under the low temperature four oxidize three cobalts, oxidize the second cobalt or metals cobalt powders.
不溶于水,乙醇,溶于酸,在低温下(125℃--250℃)可被氢还原成四氧化三钴,氧化亚钴或金属钴粉. Does not dissolve in the water,Ethyl alcohol,but dissolves in the acid,under the low temperature (125 ℃ --250 ℃) may be returned to tetroxide three cobalt by the hydrogen,Cobaltous oxide or metal cobalt powder。
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