Di-tert-butylphosphine oxide

二叔丁基氧化膦

Also known as: Di-t-butylphosphine oxide, Bis(1,1-dimethylethyl)phosphine oxide, ditert-butyl(oxo)phosphanium, Phosphine oxide, bis(1,1-dimethylethyl)-, 2-tert-Butylphosphinoyl-2-methyl-propane, DI-T-BUTYLPHOSPHINE OXIDE, DI-TERT-BUTYLPHOSPHINE OXIDE, Phosphine oxide, di-tert-butyl

Di-tert-butylphosphine oxide (CAS 684-19-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C8H19OP and a molecular weight of 162.21000 g/mol. It is also known as Di-t-butylphosphine oxide, Bis(1,1-dimethylethyl)phosphine oxide and ditert-butyl(oxo)phosphanium. Key property: a melting point of 74-82℃. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
684-19-5
Jingsj CID
J-22572-8
Molecular Formula
C8H19OP
Chinese Name
二叔丁基氧化膦
Molecular Weight
162.21000 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point74-82℃

GHS Safety & Compliance

FlammableSignal word: Warning

Frequently Asked Questions

What is the CAS number of Di-tert-butylphosphine oxide?

The CAS number of Di-tert-butylphosphine oxide is 684-19-5.

What are the molecular formula and molecular weight of Di-tert-butylphosphine oxide?

Di-tert-butylphosphine oxide has molecular formula C8H19OP and molecular weight 162.21000 g/mol.

Is Di-tert-butylphosphine oxide hazardous?

Di-tert-butylphosphine oxide has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Di-tert-butylphosphine oxide (CAS 684-19-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22572-8 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.