Tris(trimethylsilyl) phosphite
Also known as: Phosphorous acid tris(trimethylsilyl) ester, Phosphorous acid, tris(trimethylsilyl) ester, Tris(trimethylsilyl) phosphite 95%, Tris(trimethylsilyl) phosphite 97+%, Tris(trimethylsily)phosphite, tris(trimethylsilyl) phosphite, Trimethylsilanol phosphite, tris-(trimethylsiloxy)phosphane, tritrimethylsilyl phosphite, Silanol, trimethyl-, phosphite (3:1)
Tris(trimethylsilyl) phosphite (CAS 1795-31-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H27O3ψ3 and a molecular weight of 298.539 g/mol. Key properties include a boiling point of 236.1±23.0 °C at 760 mmHg, a density of 0.893 g/mL at 25 °C(lit.) and a flash point of 96.6±22.6 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1795-31-9
- Jingsj CID
- J-26685-3
- Molecular Formula
- C9H27O33
- Molecular Weight
- 298.539 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 236.1±23.0 °C at 760 mmHg |
|---|---|
| Density | 0.893 g/mL at 25 °C(lit.) |
| Flash Point | 96.6±22.6 °C |
| Exact Mass | 298.100555 |
| PSA | 41.28000 |
| LogP | 6.17 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | n20/D 1.409(lit.) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
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 Tris(trimethylsilyl) phosphite?
The CAS number of Tris(trimethylsilyl) phosphite is 1795-31-9.
What are the molecular formula and molecular weight of Tris(trimethylsilyl) phosphite?
Tris(trimethylsilyl) phosphite has molecular formula C9H27O3ψ3 and molecular weight 298.539 g/mol.
Is Tris(trimethylsilyl) phosphite hazardous?
Tris(trimethylsilyl) phosphite has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tris(trimethylsilyl) phosphite (CAS 1795-31-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26685-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.