
项 目Item |
技术指标Technique Data |
外 观Appearance |
白色粉末White powder |
白 度Whiteness |
优于、等于标样Greater than or equal to the standard |
二氧化硅含量(干品)SiO2(dry)% |
≥90 |
加热减量%105℃,2h
Evaporation loss %105℃,2h |
4.0—7.5 |
灼烧减量(干品)%1000℃ 2h
Lgnition loss(dry) %1000℃ 2h |
3.0—6.5 |
PH 值 Ph value |
6.0-7.5 |
BET比表面积㎡/gBET special area ㎡/g |
230-300 |
DBP吸收值㎝³/g DBP absorption ㎝³/g |
≥3.4 |
总铁含量mg/kg Totle Fe mg/kg |
≤500 |
总铜含量mg/kg Totle Cu mg/kg |
≤30 |
总锰含量mg/kg Totle Mn mg/kg |
≤50 |
目 数 Mesh Count |
≥2000 |
USES: mainly used in radial tire, rubber products, plastic film, paint coating production, also can be used in medicine, food, feed (additive, etc.) pesticides。 |