Fumed silica AEROSIL R974 
 Hydrophobic fumed silica, AEROSIL R974 is based on the specific surface area of 130M2 / g hydrophilic fumed silica type by DDS (dimethyldichlorosilane) obtained after the processing hydrophobic fumed silica. 
 Application: 
 Ink (copier toner), paints, plastics, toothpaste, food, pharmaceutical, cosmetics, silicone rubber, sealants, adhesives, gel batteries, composites, industrial lubricants, unsaturated polyester resins, resin and plastic laminated clothing, rubber insulated cables and cable gel, synthetic grease thickener, plant protection and other fields. 

 Features: 
 Mainly composed of silica, molecular formula: SiO2. White fluffy powder, porous, non-toxic, tasteless non-polluting, high temperature. At the same time it has a chemically inert and special thixotropic rubber products can significantly improve the tensile strength, tear resistance and abrasion resistance, strength of rubber modified several times. Liquid systems, adhesives, polymers such as rheology and thixotropy control. As anti-settling, thickening, anti-sag additives. HCR silicone rubber and RTV-2K reinforcement. Used to regulate the freedom of movement and as an anti-caking agents to improve the powder properties and so on. Liquid system, waterproof, hydrophobic; complex fluid flow control system; for coating anti-settlement, in order to improve the stability of pigments and enhance corrosion protection; to improve the hydrophobic offset printing ink and rheology; promote and maintain the flow of powder and anti- agglomeration. 

 Performance indicators: 
 Hydrophobic properties of water 
 Appearance white powder 
 Specific surface area m / g 170 ± 20 
 Primary particle size nm 12 
 Standard density g / l 50 
 The compacted density g / l 90 
 Water (at 105 ℃ 2 hours) <0.5% 
 Ignition loss (at 1000 ℃ for 2 hours) <2% 
 pH (measured at 4% aqueous solution) 3.6 - 4.3 
 Silica content of> 99.8% 
 Aluminum oxide content of <0.05% 
 Ferric oxide content of "0.01% 
 Antimony dioxide content of <0.03