Diphenylphosphinic acid
Also known as: Diphenylphosphine oxide, Hydroxydiphenylphosphine oxide, Phosphinic acid, P,P-diphenyl-, Diphenylphosphonic acid, EINECS 216-948-5, MFCD00002132
Diphenylphosphinic acid (CAS 1707-03-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H11O2P and a molecular weight of 218.188 g/mol. Key properties include a melting point of 193-195 °C(lit.), a boiling point of 446.2±18.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 223.7±21.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1707-03-5
- Jingsj CID
- J-1495025-5
- Molecular Formula
- C12H11O2P
- Molecular Weight
- 218.188 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 193-195 °C(lit.) |
|---|---|
| Boiling Point | 446.2±18.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 223.7±21.2 °C |
| Exact Mass | 218.049667 |
| PSA | 47.11000 |
| LogP | 1.62 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.603 |
Customs & Trade Information
| HS Code | 29310095 |
|---|
Frequently Asked Questions
What is the CAS number of Diphenylphosphinic acid?
The CAS number of Diphenylphosphinic acid is 1707-03-5.
What are the molecular formula and molecular weight of Diphenylphosphinic acid?
Diphenylphosphinic acid has molecular formula C12H11O2P and molecular weight 218.188 g/mol.
What are the upstream and downstream products of Diphenylphosphinic acid?
For Diphenylphosphinic acid, Upstream Products: Diphenylphosphine oxide, Chlorodiphenylphosphine, Iodobenzene; Downstream Products: Diphenylphosphine oxide, Tetraphenyldiphosphine, Diphenylphosphine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diphenylphosphinic acid (CAS 1707-03-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495025-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.