ItemSpecificationAppearanceWhite powderContent %≥98.5%Chloride(Cl) %≤0.5%Moisture %≤0.5%Sulfate %≤0.02%Heavy Metals(as Pb)≤10ppmPH(5% in water)4.5-6.0PackingPE inner bag/fibre pail 25kgsUsageMainly used as sensitization film, photograph mulsion material ; photographic paperAnd medicine、plastic、printing agents ,ect.