3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane

3,9-双(2,6-二叔丁基-4-甲基苯氧基)-2,4,8,10-四氧杂-3,9-二磷螺[5.5]十一烷

Also known as: bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, PEP-36, Adekastab PEP-36, 2,2'-bis(2,6-di-tert-butyl-4-methylphenoxy)-5,5'-spirobi[1,3,2-dioxaphosphorinane], 3,9-bis[2,6-bis(1,1-dimethylethyl)-4-methylphenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane

3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane (CAS 80693-00-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C35H54O6P2 and a molecular weight of 632.74700 g/mol. It is also known as bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, PEP-36 and Adekastab PEP-36. Key properties include a melting point of 235-240ºC, a boiling point of 577ºC at 760 mmHg and a flash point of 380.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

80693-00-1

Jingsj CID

J-1094750-6

Molecular Formula

C₃₅H₅₄O₆P₂

Chinese Name

3,9-双(2,6-二叔丁基-4-甲基苯氧基)-2,4,8,10-四氧杂-3,9-二磷螺[5.5]十一烷

Molecular Weight

632.74700 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026