... Quality indexes Item Index Color, APHA Max. 10 Content% Min. 99.0 Moisture% Max. 0.2 Specific Gravity (20/20) 1 ... , % 0.007 max Sulfate, % 0.006 max Heavy metals, ppm 5 max Residue on ignition, % 0.07 max Organic Volatile impurity ... max Organic Voltile impurity trichloroethylene, ug/g 80max Assay, GLC% 99.5 min Packing Packed in galvanized iron drums, net weight 200KG ...