... industry grade 2,Manufacturer 3,Free sample 4,Borax 95% 99.5% 5,good quality and competitive price Borax1,English name:Borax, Sodium ... -44,boiling point:1575°C melting point:about 880°C 5,wide use of borax Mainly use in enamel and ceramincs ... industry,glass industry etc... Borax 95% min.NaCO3 0.30% maxWater insoluble matter0.04% max.NaSO40.02 ...