Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite

双(2,4-二叔丁基苯基)季戊四醇二亚磷酸酯

Also known as: Antioxidant 24, Ultranox 626, ADK Stab PEP 24, Alkanox-P-24, Mark PEP 24, 3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, 2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-, 3,9-Bis[2,4-bis(2-methyl-2-propanyl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, Bis(2,4-di-tert-butylphenyl) pentaerythrityl diphosphite

Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite (CAS 26741-53-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C33H50O6P2 and a molecular weight of 604.694 g/mol. It is also known as Antioxidant 24, Ultranox 626 and ADK Stab PEP 24. Key properties include a melting point of 160-178ºC, a boiling point of 555.8±50.0 °C at 760 mmHg and a flash point of 363.9±30.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

26741-53-7

Jingsj CID

J-33155-7

Molecular Formula

C₃₃H₅₀O₆P₂

Chinese Name

双(2,4-二叔丁基苯基)季戊四醇二亚磷酸酯

Molecular Weight

604.694 g/mol

Category

Organic Acids

Last updated

8/21/2026