amorphous or bluish green crystal(s) powder(s); can be prepared by adding borax to an aqueous Cu++ sulfate or chloride solution, which precipitates the borate; used as an oil pigment, a dehydrogenation catalyst, wood preservative, and fire retardant additive [HAW93] [KIR78]
As ceramic color, pigment in oil paint; in dehydrogenation catalysis; as insulating and sealing medium for lead wires in lamps and mercury rectifiers, as fireproofing agent and preservative for wood; as fungicide, insecticide, parasiticide.
