... -aluminum, chlorine and heavy metal ions and other harmful substances; 3, significant decoloration, deodorization, dehydration, de-oiling, sterilization, removal of ... PH value( 1% water solution ) 2.0~ 3.02.0~ 3.0 Density( g/cm 3, 20°C ) > 1.45 Arsenic content, % ≤0 ... .0005 Lead content, % ≤0.00150.0010 Insolubles content, % ≤0.50.3 Package and storage:solid plastic woven bag, bag 25Kg. Net weight ...