silicon dioxide

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Fumed Silica 1.high purity 2.Best price 3.Best Packing 4.on time delivery  We provide different grade fumed silica,please contact us we can provide what you wantHydrophobic silicon dioxide ( silicon dioxide precipitated )             It mainly will generally get close to water sex Silion dioxide under the condition of appropriate with alkane of silion accidentally the join responds but becomes, make a kind of surface has the solid powder form that the silion oxygen alkane( polysiloxane) connects of gather two oxidize the silion , its hydrophobe contacts Cape can amount to 70-150, not only have the good hydrophobe at the same time but also eliminate to steep the function, applicably in the spinning dying, eliminate to steep the , lubricant, not saturated polyester resin, powder to extinguish fire the products, such as and the silion rubber...etc. in.               Packing PP/woven bag, EVA/woven bag,  kraft paper bag                     Application Silicon Rubber, antifoaming agent, resin                              Technique IndexItemIndexappearancewhite powderSiO2 %≥98.0PH (5%aq.suspension)5.0-8.0BET Surface Area   m2/g≥200Oil Absorption   ml/g2.0-3.5Loss on drying(105oC, 2h )4.0-8.0Loss on Ignition(1000oC)≤7.0 Iron mg/kg  Na2SO4 Content %≤0.5 Partical Size μm≤5 Packing kg/bag10itemsspecificationspecificationnameFumed silicaFumed silicagradeW-150W-200formWhite powderWhite powderwhiteness9898SiO2 content (dry) %99.999.9PH value(5% in water)4.5-5.54.5-5.5Average particle size12-14nm12...FFumed Silica1.high purity2.Best price3.Best Packing4.on time delivery  We provide different grade fumed silica,please contact us we can provide what you wantHydrophobic silicon dioxide ( silicon dioxide precipitated )             It mainly will generally get close to water sex Silion dioxide under the condition of appropriate with alkane of silion accidentally the join responds but becomes, make a kind of surface has the solid powder form that the silion oxygen alkane( polysiloxane) connects of gather two oxidize the silion , its hydrophobe contacts Cape can amount to 70-150, not only have the good hydrophobe at the same time but also eliminate to steep the function, applicably in the spinning dying, eliminate to steep the , lubricant, not saturated polyester resin, powder to extinguish fire the products, such as and the silion rubber...etc. in.               Packing PP/woven bag, EVA/woven bag,  kraft paper bag                     Application Silicon Rubber, antifoaming agent, resin                              Technique IndexItemIndexappearancewhite powderSiO2 %≥98.0PH (5%aq.suspension)5.0-8.0BET Surface Area   m2/g≥200Oil Absorption   ml/g2.0-3.5Loss on drying(105oC, 2h )4.0-8.0Loss on Ignition(1000oC)≤7.0 Iron mg/kg  Na2SO4 Content %≤0.5 Partical Size μm≤5 Packing kg/bag10itemsspecificationspecificationnameFumed silicaFumed silicagradeW-150W-200formWhite powderWhite powderwhiteness9898SiO2 content (dry) %99.999.9PH value(5% in water)4.5-5.54.5-5.5Average particle size12-14nm12-14nmBulk density g/l40-5040-50Heating loss(105 for 2hr.)%0.5-1.00.5-1.0Ignition loss(1000 for 2hr.)%1.0-2.01.0-2.0BETSpecific surface area mP2P/g150±15200±25Produce certification No.XK13-217-00815XK13-217-00815Health certification No.TLWSZZ(2007) No. 370000-000082TTLWSZZ(2007) No. 370000-000082T   Uses It is used widely in silicon rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries.A-150 used widely in silicone acid rubber, sulfurized silicone rubber in ambient temperature (low water content), silicone neutral rubber.A-200 used widely in sealing ring, sealing gasket, petroleum pipeline, insulator, tablet powdered preparation, artificial viscera, infusion tube, latex nipple and high quality oil ink.A-300 used widely in resin thickener, thickness agent for synthetic lubricating ester, resin thixotropic agent for electronic component.A-380 used widely in reinforcing agent for silicone rubber, medical silicone rubber for transparent artificial organs and artificial heart etc.     Packingpacked with multi-layer paper plastic compound bag with net weight of 5 kg or 10 kg, or packed by whole plastic seal for users having special demand on water content.