1>Spec Purity: 99.0 - 101.0 % Melting Range: 132 - 135 Deg C Heavy Metal (as Pb): 0.001 % max As: 0.0002 % max Moisture: 0.5 % max Residue on Ignition: 0.2 % max 2>Packing:25 kg/paper bag with inner