Silicon Dioxide (SiO2)-Powder
Product Description
Characteristic
Spherical silica particles have the characteristics of smooth surface, large specific surface area, high hardness and appropriate fluidity. In addition, they also have high temperature resistance, low thermal expansion coefficient, high insulation, corrosion resistance and unique optical properties. It is widely used in large scale integrated circuit packaging and epoxy plastic packing, aerospace, fine chemicals and daily cosmetics and other high-tech fields.
| Test Items | Unit | Typical value | Test Method | |
| Chemical Composition | SiO2 | % | 99.75 | Weight Method |
| Fe2O3 | ppm | 60 | Spectrophotometer | |
| Moisture | % | 0.05 | Weight Method | |
| Whiteness | / | 94.2 | Whiteness meter | |
| Extraction Water | Ec | μS/cm | 1.8 | Conductivity Meter |
| Na+ | ppm | 0.7 | Atomic Absorption Spectrometer | |
| Cl- | ppm | 0.8 | Auto Electric Potential Titrator | |
| pH | / | 5.2 | PH Meter | |
Application
The network structure of SiO2 determines its excellent physical and chemical properties. In addition, SiO2 is widely existed in nature and has been widely used by humans since ancient times. Silica and other compounds are fused at high temperatures and rapidly cooled to produce glass. It is also a major component of sand and quartz. It is the main raw material for semiconductor and solar panel applications.