Cyclohexyldiphenylphosphine oxide
Also known as: Diphenyl(cyclohexyl)phosphine oxide, Cyclohexyldiphenylphosphine Oxide, Cyclohexyl(diphenyl)phosphine oxide, Phosphine oxide, cyclohexyldiphenyl-, Phosphorane, cyclohexyldiphenyl-, oxide
Cyclohexyldiphenylphosphine oxide (CAS 13689-20-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H21OP and a molecular weight of 284.332 g/mol. Key properties include a melting point of 168-172 °C(lit.), a boiling point of 397.2±11.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 194.0±19.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13689-20-8
- Jingsj CID
- J-36083-8
- Molecular Formula
- C18H21OP
- Molecular Weight
- 284.332 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 168-172 °C(lit.) |
|---|---|
| Boiling Point | 397.2±11.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 194.0±19.3 °C |
| Exact Mass | 284.132996 |
| PSA | 26.88000 |
| LogP | 3.80 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.569 |
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 Cyclohexyldiphenylphosphine oxide?
The CAS number of Cyclohexyldiphenylphosphine oxide is 13689-20-8.
What are the molecular formula and molecular weight of Cyclohexyldiphenylphosphine oxide?
Cyclohexyldiphenylphosphine oxide has molecular formula C18H21OP and molecular weight 284.332 g/mol.
What are the upstream and downstream products of Cyclohexyldiphenylphosphine oxide?
For Cyclohexyldiphenylphosphine oxide, Upstream Products: Cyclohexanone Tosylhydrazone, Diphenylphosphine oxide, Cyclohexene; Downstream Products: Cyclohexyldiphenylphosphine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cyclohexyldiphenylphosphine oxide (CAS 13689-20-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36083-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.