Ethyldiphenylphosphine oxide
Also known as: Diphenylethylphosphine oxide, AURORA KA-1563, Diphenylphosphinoethane monoxide, EINECS 217-068-4, MFCD00013912, Phosphine oxide, ethyldiphenyl-, Phosphine oxide, diphenylethyl-, [ethyl(phenyl)phosphoryl]benzene, diphenylethyl-phosphineoxid, ethyldiphenylphosphane oxide
Ethyldiphenylphosphine oxide (CAS 1733-57-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H15OP and a molecular weight of 230.24200 g/mol. Key properties include a melting point of 120-125 °C(lit.), a boiling point of 179-180°C 14mm, a density of 1,064 g/cm3 and a flash point of >110°C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 1733-57-9
- Jingsj CID
- J-40449-9
- Molecular Formula
- C14H15OP
- Molecular Weight
- 230.24200 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 120-125 °C(lit.) |
|---|---|
| Boiling Point | 179-180°C 14mm |
| Density | 1,064 g/cm3 |
| Flash Point | >110°C |
| Exact Mass | 230.08600 |
| PSA | 26.88000 |
| LogP | 3.02040 |
| Vapor Pressure | 0.000483mmHg at 25°C |
| Refractive Index | 1.558 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2902909090 |
|---|---|
| Summary | 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Ethyldiphenylphosphine oxide?
The CAS number of Ethyldiphenylphosphine oxide is 1733-57-9.
What are the molecular formula and molecular weight of Ethyldiphenylphosphine oxide?
Ethyldiphenylphosphine oxide has molecular formula C14H15OP and molecular weight 230.24200 g/mol.
Is Ethyldiphenylphosphine oxide hazardous?
Ethyldiphenylphosphine oxide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; 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. "Ethyldiphenylphosphine oxide (CAS 1733-57-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40449-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.