... , Carbon Black, Rosin Ester, OH POLYMER, DIMETHYL SILICONE FLUID, FUMED SILICA AppearanceWhite powderSpecific surface area (m2/g)100±20150±20180±20200 ... ~4.53.8~4.53.8~4.5SiO2 (%)>99.8>99.8>99.8>99.8>99.8>99.8Chloride content (%)<0.025<0.025<0 ... , Carbon Black, Rosin Ester, OH POLYMER, DIMETHYL SILICONE FLUID, FUMED SILICA , AND SO ON.If you have this need, please contact ...