Triethyl phosphite
Also known as: Phosphorous acid triethyl ester, Triethoxyphosphine, Ethyl phosphite, P(EtO)3, TEP, fosforyntrojetylowy, triethyl phosphite94%, TRIETHYLPHOSPHITE HP, TRIETHYLPHOSPHITE FOR SYNTHESIS
Triethyl phosphite (CAS 122-52-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H15O3P and a molecular weight of 166.155 g/mol. Key properties include a melting point of -112°C, a boiling point of 159.8±8.0 °C at 760 mmHg, a density of 0.989 and a flash point of 54.1±18.7 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 122-52-1
- Jingsj CID
- J-1370593-6
- Molecular Formula
- C6H15O3P
- Molecular Weight
- 166.155 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -112°C |
|---|---|
| Boiling Point | 159.8±8.0 °C at 760 mmHg |
| Density | 0.989 |
| Flash Point | 54.1±18.7 °C |
| Exact Mass | 166.075882 |
| PSA | 41.28000 |
| LogP | 0.67 |
| Vapor Pressure | 3.2±0.3 mmHg at 25°C |
| Refractive Index | n20/D 1.413(lit.) |
| Additional Property | slightly soluble |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H302 — Harmful if swallowed
- H317 — May cause an allergic skin reaction
- H412 — Harmful to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2920901200 |
|---|---|
| Summary | 2920901200 triethyl phosphite。supervision conditions:23(import license for dual-use item and technologies,export license for dual-use item and technologies)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Triethyl phosphite?
The CAS number of Triethyl phosphite is 122-52-1.
What are the molecular formula and molecular weight of Triethyl phosphite?
Triethyl phosphite has molecular formula C6H15O3P and molecular weight 166.155 g/mol.
Is Triethyl phosphite hazardous?
Triethyl phosphite has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of Triethyl phosphite?
For Triethyl phosphite, Upstream Products: Ethyl phosphorodichloridite, Ethanol, Diethyl chlorophosphite; Downstream Products: Tetraethyl p-xylylenebis(phosphonate).
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Triethyl phosphite (CAS 122-52-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1370593-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.