Barium carbonate As raw material of barium salt, pigments, optical glass,paint,pottery and poreelain,radio cell and so on. , Barium carbonateAs raw material of barium salt, pigments, optical glass,paint,pottery and poreelain,radio cell and so on. , Best qualityFirst qualityQualifierAssay( BaCO3 )%99.299.098.5Moisture %0.300.300.50Ignition residue of Hcl insolubles %0.150.250.50Total sulphur%0.250 ...