Diisodecyl phenyl phosphite

亚磷酸一苯二异癸酯

Also known as: Phenyl diisodecyl phosphite, Phosphorous acid, diisodecyl phenyl ester, Diisodecyl phenyl phosphite (PDDP), ADK STAB 517, LOTSORB 517, TRUELICHT PDDP, Antioxidant PDDP, Disodecylphenylphosphite, EINECS 247-098-3, MFCD00015058

Diisodecyl phenyl phosphite (CAS 25550-98-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C26H47O3P and a molecular weight of 438.62300 g/mol. It is also known as Phenyl diisodecyl phosphite, Phosphorous acid, diisodecyl phenyl ester and Diisodecyl phenyl phosphite (PDDP). Key properties include a boiling point of 469.4ºC at 760mmHg, a density of 0.94 g/mL at 25 °C(lit.) and a flash point of 296.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
25550-98-5
Jingsj CID
J-1412644-2
Molecular Formula
C26H47O3P
Chinese Name
亚磷酸一苯二异癸酯
Molecular Weight
438.62300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point469.4ºC at 760mmHg
Density0.94 g/mL at 25 °C(lit.)
Flash Point296.3ºC

Frequently Asked Questions

What is the CAS number of Diisodecyl phenyl phosphite?

The CAS number of Diisodecyl phenyl phosphite is 25550-98-5.

What are the molecular formula and molecular weight of Diisodecyl phenyl phosphite?

Diisodecyl phenyl phosphite has molecular formula C26H47O3P and molecular weight 438.62300 g/mol.

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

Last updated:

How to cite: Jingsj. "Diisodecyl phenyl phosphite (CAS 25550-98-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1412644-2 (accessed 2026-10-24).

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