Application:
Silicon rubber: Improve anti-aging property and resilience Plastic industry: Can improve the flexibility, strength and water resistance of plastics. Coatings: Enhance anti-caking property; Has thickening and extinction property. Pharmacy: Has thickening, suspending function; As carrier; As anti-caking agent.NO.ItemsSpecifications1.SiO2 content, dry basis, %98% min2.Whiteness, %100 min3.Particle Size, μ m24.0-32.0 μ m4.PH value6.7-7.15.105° C. 2h (105° C drying loss, %)4.0-7.0% max6.1000° C. 2h (Loss on ignition, %)7.0% max7.BET (specific surface area, m2/g)170-230 m2/g8.DBP absorption value2.10-2.50 cm³ /g9.Na2SiO40.8%10.SO42- content, %0.5 max 11.Total iron content, mg/kg300 max