Tris(trimethylsilyl) phosphate
Also known as: Phosphoric acid tris(trimethylsilyl) ester, Phosphoric acid, TMS, Phosphoric acid, triTMS, Phosphoric acid, tristrimethylsilyl, Silanol, trimethyl-, phosphate (3:1), Trimethyl silyl phosphate, TMSP
Tris(trimethylsilyl) phosphate (CAS 10497-05-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H27O4PSi3 and a molecular weight of 314.53900 g/mol. Key properties include a melting point of 3-4 °C(lit.), a boiling point of 228-229 °C720 mm Hg(lit.), a density of 0.945 g/mL at 25 °C(lit.) and a flash point of 24.4 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 10497-05-9
- Jingsj CID
- J-6724-3
- Molecular Formula
- C9H27O4PSi3
- Molecular Weight
- 314.53900 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 3-4 °C(lit.) |
|---|---|
| Boiling Point | 228-229 °C720 mm Hg(lit.) |
| Density | 0.945 g/mL at 25 °C(lit.) |
| Flash Point | 24.4 °C |
| Exact Mass | 314.09500 |
| PSA | 54.57000 |
| LogP | 4.64900 |
| Vapor Pressure | 0.0977mmHg at 25°C |
| Refractive Index | n20/D 1.409(lit.) |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory 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) phosphate?
The CAS number of Tris(trimethylsilyl) phosphate is 10497-05-9.
What are the molecular formula and molecular weight of Tris(trimethylsilyl) phosphate?
Tris(trimethylsilyl) phosphate has molecular formula C9H27O4PSi3 and molecular weight 314.53900 g/mol.
Is Tris(trimethylsilyl) phosphate hazardous?
Tris(trimethylsilyl) phosphate has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Tris(trimethylsilyl) phosphate?
For Tris(trimethylsilyl) phosphate, Upstream Products: Hexamethyldisiloxane, 1,1,1,3,3,3-Hexamethyldisilazane, bis(trimethylsilyl) sulfide; Downstream Products: Azidotrimethylsilane, Bromotrimethylsilane, Trimethylfluorosilane.
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) phosphate (CAS 10497-05-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6724-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.