Silicon Dioxide NL-555 Chemistry character: precipitation analysis Silicon Dioxide General character: It has good absorptivity and dispersity, mainly regarded as carrier in feedstuff additive,pesticide, laundry powder industries. Etc. Application: feedstuff additive, pesticide Item value Appearance very fine powder Loss on drying 105C 2h % 4.0-8.0 Ignition loss 1000C % ≤7.0 PH value 6.0-7.5 BET speciflc surface area m2/gBET 165-200 DBP absorption value cm3/gDBP 2.0-3.5 SiO2% ≥90.0% Fe(mg/kg) ≤1000 Mn(mg/kg) ≤50 Na2SiO4% ≤1.6 Specific gravity g/L ≥200