... 1446°C, melting rate 11.80KJ/mol, hardness 3.4, dielectric constant 18.10. It doesn’t dissolve in water, but dissolves ... VI)< 2ppmFine≤ 0.3%MaimlyMainly used in the industry areas of glass, ceramics, enamel, colors, etc. It can be used as ... , artificial rainmaking material; it can also used in ferromagnetic materials of electronics industry Cupric oxide