... ) 0.0002% maxInsoluble 0.01%maxUse: --Mainly used in fertilizer, tanning, pringting and dyeing,activator,papermaking,plastic,porcelain,pigment ... matchmaking ,dynamite and fireproof materials making . --Can used in pringting and dyeing delaine as the aggravating reagent of ... in dry and cool place.Protection from sunshine,rain,moisture. if you are interested in it,pls contat us. Magnesium Sulphate ...