ISO 9001:2000 certificate 2Na2CO3?H2O2 Appearance White flowing granule purity 95% (min) Effective Active Oxygen 14%(min) 3%Aqueous Solution PH Value 10-11 Active Water 1.5%(max) Bulk Density 700-1100(g/l) Iron Content 20ppm(max) Heat Stability 98%(min)