Powder, Granular or Micropearl form, Soluble in caustic alkali and hydrofluoric acid, insoluble in acids, water and various solvents.Resistance to high temperature,no combustion, good insulation properties
SAI-773 is precipitated silica by selection of raw materials , with high transparency, low yellowing, best thickening effect ,used widely for glass adhesive and silicone rubber.
SAI-779 is a superfine silica with low iron raw materials, good dispersion, high transparency, anti-yellow effect,  and stringent impurity removal process and specifically for high-temperature vulcanized silicone rubber
SAI-779-1 is a high reinforced ultrafine silica. Because of its fine particle size, high surface area and fewer impurities, in silicon rubber, has excellent reinforcing effect, and can make products with high transparency, high tear resistance and heat aging and anti-yellowing properties . Can also be used in paint industry.
SAI-800 is an ultrafine silica developed for high-quality rubber compound and silicone rubber products , proprietary products, has excellent anti-yellowing effect.(Invention patent,Patent number:ZL 2009 1 0112126.7)
SAI-160, 180: ultrafine silica through special process, specially for translucent silicone rubber products , with good reinforcement effect.

Type     Item	SAI-773	SAI-779	SAI-779-1	SAI-160	SAI-800
BET surface area ,m2/g ISO 5794-1 附录D	145±15	145±15	165±15	145±15	165±15
Heating Loss at 105℃ 2h ，% ISO 787-2	4.0～8.0	4.0～8.0	4.0～8.0	4.0～8.0	4.0～8.0
Igniting loss 1000℃ 2h, % ISO 3262-1	≤ 7	≤ 7	≤ 7	≤ 7	≤ 7
SiO2,% ISO 3262-19	≥  98.0	≥  98.0	≥  98.0	≥  98.0	≥  98.0
(5% aqueous suspension) ISO 787-9	6.0～7.0	6.0～7.0	6.0～7.0	6.0～7.0	6.0～7.0
DBP absorption , cm3/g HG/T 3072-2008	2.0～2.7	2.0～2.7	2.0～2.7	2.0～2.7	2.0～2.7
Na2SO4,% Q/ZS 0002-2013	≤ 1.0	≤0.7	≤0.7	≤0.7	≤0.7
Iron Content ,mg/kg ISO 5794-1 附录C	≤ 200	≤ 200	≤ 200	≤ 200	≤ 200
Median size :D50,μm  ISO 13320-1	-	12±2	12±2	12±2	12±2