Tris(2-tert-butyl-4-methylphenyl) phosphite
三(2-叔丁基-4-甲基苯基)亚磷酸酯
Also known as: Phosphorous acid, tris(2-tert-butyl-4-methylphenyl) ester, Antioxidant P-EPQ, Irganox P-EPQ, Irgafos P-EPQ, 2-tert-butyl-4-methylphenol, phosphorous acid (3:1)
Tris(2-tert-butyl-4-methylphenyl) phosphite (CAS 21177-86-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C33H51O6P and a molecular weight of 574.72800 g/mol. It is also known as Phosphorous acid, tris(2-tert-butyl-4-methylphenyl) ester, Antioxidant P-EPQ and Irganox P-EPQ. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21177-86-6
- Jingsj CID
- J-1497697-3
- Molecular Formula
- C33H51O6P
- Chinese Name
- 三(2-叔丁基-4-甲基苯基)亚磷酸酯
- Molecular Weight
- 574.72800 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quoteFrequently Asked Questions
What is the CAS number of Tris(2-tert-butyl-4-methylphenyl) phosphite?
The CAS number of Tris(2-tert-butyl-4-methylphenyl) phosphite is 21177-86-6.
What are the molecular formula and molecular weight of Tris(2-tert-butyl-4-methylphenyl) phosphite?
Tris(2-tert-butyl-4-methylphenyl) phosphite has molecular formula C33H51O6P and molecular weight 574.72800 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tris(2-tert-butyl-4-methylphenyl) phosphite (CAS 21177-86-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1497697-3 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.