Tributylphosphine
三丁基膦
Also known as: Tri-n-butylphosphine, Phosphine, tributyl-, Tris(butyl)phosphine, Tributylphosphane, Tributylfosfin, PBU3, UNII:0O52FJR7WN
Tributylphosphine (CAS 998-40-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H27P and a molecular weight of 202.316 g/mol. It is also known as Tri-n-butylphosphine, Phosphine, tributyl- and Tris(butyl)phosphine. Key properties include a melting point of -65 °C, a boiling point of 244.8±0.0 °C at 760 mmHg, a density of 0.81 g/mL at 25 °C(lit.) and a flash point of 112.2±25.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 998-40-3
- Jingsj CID
- J-1991159-5
- Molecular Formula
- C12H27P
- Chinese Name
- 三丁基膦
- Molecular Weight
- 202.316 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -65 °C |
|---|---|
| Boiling Point | 244.8±0.0 °C at 760 mmHg |
| Density | 0.81 g/mL at 25 °C(lit.) |
| Flash Point | 112.2±25.0 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Tributylphosphine?
The CAS number of Tributylphosphine is 998-40-3.
What are the molecular formula and molecular weight of Tributylphosphine?
Tributylphosphine has molecular formula C12H27P and molecular weight 202.316 g/mol.
Is Tributylphosphine hazardous?
Tributylphosphine has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tributylphosphine (CAS 998-40-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991159-5 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.