tert-Butylphosphonic dichloride

叔丁基二氯磷酸

Also known as: tert-Butyldichlorophosphine oxide, tert-Butylphosphonyl dichloride, (1,1-Dimethylethyl)dichlorophosphine oxide, 2-dichlorophosphoryl-2-methylpropane, P-(1,1-Dimethylethyl)phosphonic dichloride, Phosphonic dichloride, P-(1,1-dimethylethyl)-

tert-Butylphosphonic dichloride (CAS 4707-95-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9Cl2OP and a molecular weight of 174.99300 g/mol. It is also known as tert-Butyldichlorophosphine oxide, tert-Butylphosphonyl dichloride and (1,1-Dimethylethyl)dichlorophosphine oxide. Key properties include a melting point of 121-123 °C(lit.), a boiling point of 195.2ºC at 760 mmHg, a density of 1.236g/cm3 and a flash point of 71.8ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4707-95-3
Jingsj CID
J-27040-3
Molecular Formula
C4H9Cl2OP
Chinese Name
叔丁基二氯磷酸
Molecular Weight
174.99300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point121-123 °C(lit.)
Boiling Point195.2ºC at 760 mmHg
Density1.236g/cm3
Flash Point71.8ºC

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of tert-Butylphosphonic dichloride?

The CAS number of tert-Butylphosphonic dichloride is 4707-95-3.

What are the molecular formula and molecular weight of tert-Butylphosphonic dichloride?

tert-Butylphosphonic dichloride has molecular formula C4H9Cl2OP and molecular weight 174.99300 g/mol.

Is tert-Butylphosphonic dichloride hazardous?

tert-Butylphosphonic dichloride has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "tert-Butylphosphonic dichloride (CAS 4707-95-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27040-3 (accessed 2026-10-24).

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