APPEARANCE:WHITE CRYSTALLINE POWDER
ASSAY:≥99.2%
MELTING POINT:89-92℃
WATER:≤0.3%
RESIDUE ON IGNITION:≤0.1%
HEAVY METALS(AS PB):≤10PPM
LEAD:≤5PPM
ARSENIC:≤2PPM
CADMIUM:≤1PPM
MERCURY:≤1PPM