Trimethylphosphine oxide
三甲基氧膦
Also known as: (CH3)3PO, dimethylphosphorylmethane, Phosphine oxide, trimethyl-, Oseltamivir Impurity 178, Trimethylphosphinoxid, EINECS 211-633-9, MFCD00013910
Trimethylphosphine oxide (CAS 676-96-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H9OP and a molecular weight of 92.07670 g/mol. It is also known as (CH3)3PO, dimethylphosphorylmethane and Phosphine oxide, trimethyl-. Key properties include a melting point of 140-141ºC, a boiling point of 193.7ºC at 760 mmHg, a density of 0.9 g/cm3 and a flash point of 71ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 676-96-0
- Jingsj CID
- J-1353937-1
- Molecular Formula
- C3H9OP
- Chinese Name
- 三甲基氧膦
- Molecular Weight
- 92.07670 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 140-141ºC |
|---|---|
| Boiling Point | 193.7ºC at 760 mmHg |
| Density | 0.9 g/cm3 |
| Flash Point | 71ºC |
| Exact Mass | 92.03910 |
| PSA | 26.88000 |
| LogP | 1.23890 |
| Refractive Index | 1.364 |
| Additional Property | Soluble in polar organic solvents. |
Frequently Asked Questions
What is the CAS number of Trimethylphosphine oxide?
The CAS number of Trimethylphosphine oxide is 676-96-0.
What are the molecular formula and molecular weight of Trimethylphosphine oxide?
Trimethylphosphine oxide has molecular formula C3H9OP and molecular weight 92.07670 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimethylphosphine oxide (CAS 676-96-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1353937-1 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.