Trimethyl(trifluoromethyl)silane
Also known as: Ruppert's reagent, Ruppert-Prakash reagent, TMS-CF3, TFMTMS, (Trifluoromethyl)trimethylsilane, Trimethylsilyltrifluoromethane, Silane, trimethyl(trifluoromethyl)-, Trifluoro(trimethylsilyl)methane, MFCD00145454
Trimethyl(trifluoromethyl)silane (CAS 81290-20-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H9F3Si and a molecular weight of 142.19 g/mol. Key properties include a boiling point of 49.3±40.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of -16.4±27.3 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 81290-20-2
- Jingsj CID
- J-17030-9
- Molecular Formula
- C4H9F3Si
- Molecular Weight
- 142.19 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Boiling Point | 49.3±40.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | -16.4±27.3 °C |
| Exact Mass | 142.042557 |
| LogP | 1.85 |
| Vapor Pressure | 313.6±0.1 mmHg at 25°C |
| Refractive Index | 1.328 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Trimethyl(trifluoromethyl)silane?
The CAS number of Trimethyl(trifluoromethyl)silane is 81290-20-2.
What are the molecular formula and molecular weight of Trimethyl(trifluoromethyl)silane?
Trimethyl(trifluoromethyl)silane has molecular formula C4H9F3Si and molecular weight 142.19 g/mol.
Which suppliers offer Trimethyl(trifluoromethyl)silane?
1 supplier(s) listed; request a quote for pricing.
Is Trimethyl(trifluoromethyl)silane hazardous?
Trimethyl(trifluoromethyl)silane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour.
What are the upstream and downstream products of Trimethyl(trifluoromethyl)silane?
For Trimethyl(trifluoromethyl)silane, Upstream Products: Chlorotrimethylsilane, Trifluoromethane, Trifluoromethyl iodide; Downstream Products: 2-(Trifluoromethyl)benzonitrile, 1-nitro-2-(trifluoromethyl)benzene, 1,1,1-Trifluoro-4-iodobutane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimethyl(trifluoromethyl)silane (CAS 81290-20-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17030-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.