... 1.factory production with reasonable price 2.SGS,BV inspection 28%-30% Lithopone B301 B311Physical appearance:white powder, non-toxic, tasteless ... , odourless, insoluble in waterCAS NO:1345-05-7 Molecular Formula:ZnSBaSO4Molecular Weight:330.84Specification: IndexB301B311Ba+SO4 (as ... is used as a filler in paper, leather, and linoleum. 28%-30% Lithopone B301 B311