SILICA(SILICON DIOXIDE) ASSAY: 90% min. Loss on Ignition: 7.0% max. Loss on Drying: 3.0-8.0% DBP Absorption: 2.5-3.5 ml/g PH: 6.0-8.0 Arsenic: 10mg/kg max. Lead: 10mg/kg max Mercury: 0.1mg/kg max Cadmium: 2mg/kg max . Application: used as additive to increase adhesion between copper wire and rubber in tyre industry; rubber additivees to increase strength and other performance; pesticide carrying agent with good absorption, chemical stability and fluidity; raw mater of silicon dioxide; food additive. Packing: In plastic woven bags of 20KGS net each.