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Tris(1-aziridinyl)phosphine oxide

三(1-氮丙啶基)氧化膦

Also known as: TEPA, Triethylenephosphoramide, Aphoxide, 1,1',1''-phosphoryltris(aziridine), 1,1',1''-phosphinylidynetris[aziridine], 1-[bis(aziridin-1-yl)phosphoryl]aziridine, Aziridine, 1,1',1''-phosphinylidynetris-, Triaziridinylphosphine oxide, Phosphoric acid triethyleneimide, Imperon fixer T, N,N',N''-triethylenephosphoramide

Tris(1-aziridinyl)phosphine oxide (CAS 545-55-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C6H12N3OP and a molecular weight of 173.153 g/mol. It is also known as TEPA, Triethylenephosphoramide and Aphoxide. Key properties include a melting point of 41ºC, a boiling point of 299.0±7.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 134.6±18.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
545-55-1
Jingsj CID
J-1327313-0
Molecular Formula
C6H12N3OP
Chinese Name
三(1-氮丙啶基)氧化膦
Molecular Weight
173.153 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point41ºC
Boiling Point299.0±7.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point134.6±18.2 °C

Frequently Asked Questions

What is the CAS number of Tris(1-aziridinyl)phosphine oxide?

The CAS number of Tris(1-aziridinyl)phosphine oxide is 545-55-1.

What are the molecular formula and molecular weight of Tris(1-aziridinyl)phosphine oxide?

Tris(1-aziridinyl)phosphine oxide has molecular formula C6H12N3OP and molecular weight 173.153 g/mol.

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

Last updated:

How to cite: Jingsj. "Tris(1-aziridinyl)phosphine oxide (CAS 545-55-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1327313-0 (accessed 2026-10-24).

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