3,9-Bis(2,4-dicumylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane

3,9-二(2,4-二枯基苯氧基)-2,4,8,10-四氧杂-3,9-二磷杂螺[5.5]十一烷

Also known as: Bis(2,4-dicumylphenyl)pentaerythritol diphosphite, Antioxidant 9228, Antioxidant 686, RIANOX 686, 3,9-Bis[2,4-bis(1-methyl-1-phenylethyl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, MFCD00274221, S-9228

3,9-Bis(2,4-dicumylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane (CAS 154862-43-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C53H58O6P2 and a molecular weight of 852.97200 g/mol. It is also known as Bis(2,4-dicumylphenyl)pentaerythritol diphosphite, Antioxidant 9228 and Antioxidant 686. Key properties include a melting point of 229-232ºC(lit.), a boiling point of 778.2ºC at 760mmHg and a flash point of 537.9ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

154862-43-8

Jingsj CID

J-38811-1

Molecular Formula

C₅₃H₅₈O₆P₂

Chinese Name

3,9-二(2,4-二枯基苯氧基)-2,4,8,10-四氧杂-3,9-二磷杂螺[5.5]十一烷

Molecular Weight

852.97200 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026