3,5-Di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester

3,5-二叔丁基-4-羟基苯甲基膦酸单乙酯

Also known as: Ethyl hydrogen 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, Monoethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, 3,5-Di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester, EINECS 266-207-5

3,5-Di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester (CAS 66165-37-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C17H29O4P and a molecular weight of 328.38400 g/mol. It is also known as Ethyl hydrogen 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, Monoethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate and EINECS 266-207-5. Key properties include a boiling point of 408.3ºC at 760mmHg, a density of 1.099g/cm3 and a flash point of 200.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

66165-37-5

Jingsj CID

J-39568-1

Molecular Formula

C₁₇H₂₉O₄P

Chinese Name

3,5-二叔丁基-4-羟基苯甲基膦酸单乙酯

Molecular Weight

328.38400 g/mol

Category

Organic Acids

Last updated

8/21/2026