Tris(nonylphenyl) phosphite

三(壬基酚)亚磷酸酯

Also known as: Tris(nonylphenol)phosphite, Tri(nonylatedphenyl)phosphite, Alkanox TNPP, Naugard PHR, Naugard RM-51, Irgafos TNPP, nonyl-pheno phosphite, nonyl-phenophosphite(3:1), Tris(nonylphenyl)phosphit, Phenol, nonyl-, phosphite, Phenol, nonyl-, phosphite(3:1), Tris(nonylphenyl) phosphite ester, tris(2-nonylphenyl) phosphite

Tris(nonylphenyl) phosphite (CAS 26523-78-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C45H69O3P and a molecular weight of 689.00100 g/mol. It is also known as Tris(nonylphenol)phosphite, Tri(nonylatedphenyl)phosphite and Alkanox TNPP. Key properties include a boiling point of >360 °C(lit.), a density of 0.99 g/mL at 25 °C(lit.) and a flash point of >230 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
26523-78-4
Jingsj CID
J-47571-4
Molecular Formula
C45H69O3P
Chinese Name
三(壬基酚)亚磷酸酯
Molecular Weight
689.00100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point>360 °C(lit.)
Density0.99 g/mL at 25 °C(lit.)
Flash Point>230 °F

GHS Safety & Compliance

Corrosion / Irritant / Health Hazard / Environmental HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Tris(nonylphenyl) phosphite?

The CAS number of Tris(nonylphenyl) phosphite is 26523-78-4.

What are the molecular formula and molecular weight of Tris(nonylphenyl) phosphite?

Tris(nonylphenyl) phosphite has molecular formula C45H69O3P and molecular weight 689.00100 g/mol.

Is Tris(nonylphenyl) phosphite hazardous?

Tris(nonylphenyl) phosphite 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. "Tris(nonylphenyl) phosphite (CAS 26523-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47571-4 (accessed 2026-10-23).

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