| 出生地 |
Guangdong China (Mainland) |
intemsunitTypical testing valuemoisture content%0.09igniting loss%99.66SiO2%0.016Fe2O3%0.16Cristobalite content%75Density×103kg/m32.35mohs hardness-6.5The main characters of cristobalite silica are as follows: Special thermal expansivity. Good whiteness, special refractive index. Excellent chemical stability. It only can react with hydrofluoric acid and strong alkali. Incompact structure, low hardness.