Trihexylphosphine oxide

三己基氧化磷

Also known as: Phosphine oxide, trihexyl-, Tri-n-hexylphosphine oxide, Tri-n-hexyl-phosphinoxid, Trihexyl-phosphinoxid, Trihexylphosphane oxide, Tris(n-hexyl)phosphine oxide, EINECS 221-392-1, BRN 1782166, Ai3-51003, NSC 41936

Trihexylphosphine oxide (CAS 3084-48-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C18H39OP and a molecular weight of 302.47500 g/mol. It is also known as Phosphine oxide, trihexyl-, Tri-n-hexylphosphine oxide and Tri-n-hexyl-phosphinoxid. Key properties include a boiling point of 428.4ºC at 760mmHg, a density of 0.864g/cm3 and a flash point of 212.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3084-48-8
Jingsj CID
J-1500529-2
Molecular Formula
C18H39OP
Chinese Name
三己基氧化磷
Molecular Weight
302.47500 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point428.4ºC at 760mmHg
Density0.864g/cm3
Flash Point212.9ºC

Frequently Asked Questions

What is the CAS number of Trihexylphosphine oxide?

The CAS number of Trihexylphosphine oxide is 3084-48-8.

What are the molecular formula and molecular weight of Trihexylphosphine oxide?

Trihexylphosphine oxide has molecular formula C18H39OP and molecular weight 302.47500 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Trihexylphosphine oxide (CAS 3084-48-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1500529-2 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.