Product Code：SP3274
Product Name：Tetramethyltetraphenyltrisiloxane
Product Introduction：
This product is synthesized from methyl and phenyl silane monomers through hydrolytic copolymerization, molecular rearrangement and multi-stage vacuum rectification. Low-boiling impurities are thoroughly removed to ensure stable performance under vacuum conditions.
It has an extremely low saturated vapor pressure, resisting volatilization and pyrolysis at high temperatures. Boasting excellent thermal stability, oxidation resistance and a wide service temperature range, it features high chemical inertness and strong resistance to medium corrosion. It also delivers favorable vacuum pumping efficiency and maintains stable performance with minimal deterioration or loss during long-term operation.
Widely used in vacuum coating, semiconductor processing, vacuum metallurgy and electronic component packaging, it is compatible with various high-vacuum diffusion pumps and serves as an essential working medium for precision vacuum systems.
Basic Information
- Chinese name：274# 扩散泵硅油
- CAS number：[3982-82-9]
- Molecular formula：
Technical indicators
| Project |
Indicator |
| Refractive Index, 25 ℃ |
1.5700~1.5790 |
| Appearance |
Colorless or yellowish transparent fluid |
| Color, HAZEN |
20~50 |
| Viscosity 25℃, mm²/s |
30~50 |
| Ultimate vacuum, (Pa) |
<3.99x10﹣⁷ |
| Flash Point (open cup) , ℃ |
221 |
| Freezing Point, ℃ |
<-50 |
| Density 25℃, g/cm³ |
1.07 |
| 饱和蒸气压, (Pa) |
<6.65x10﹣⁸ |
Characteristic advantages
- High phenyl content, high refractive index and low viscosity.
- Excellent thermal stability.
- Excellent compressibility, oxidation resistance and radiation resistance.
- Good chemical inertness.
Application field
- Used in high vacuum melting furnace.
- For coating architectural glass and metal sheets.
- To melt refractory metals.
Safe handling
- Wear eye protection and protective gloves as required while handling the product.
- Use the product in a well ventilated area.
- Please consult our MSDS.
Use storage
- When stored in its original container below 40°C and unopened, the shelf life is 2 years. It can still be used after re-inspection.
- Store in a cool and dry place out of direct sunlight.
- Keep out of the reach of children.
Packaging Information
- Available in 25KGS drum, 200KGS drum or 1000KGS IBC.
