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1,1-Dichloro-3,3-dimethyl-2-butanone

Also known as: 1,1-Dichloropinacolin, Dichloropinacolin, Dichloropinacolone, tert-Butyl Dichloromethyl Ketone, dichloromethyl tert-butyl ketone, 1,1-Dichloropinacoline, 1,1-Dichloro-3,3-dimethylbutan-2-one, 3,3-Dimethyl-1,1-dichlorobutanone-2, Dichloropinakolin

1,1-Dichloro-3,3-dimethyl-2-butanone (CAS 22591-21-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H10Cl2O and a molecular weight of 169.049 g/mol. Key properties include a melting point of 50ºC, a boiling point of 173.8±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 65.0±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
22591-21-5
Jingsj CID
J-17096-7
Molecular Formula
C6H10Cl2O
Molecular Weight
169.049 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point50ºC
Boiling Point173.8±20.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point65.0±22.3 °C
Exact Mass168.010864
PSA17.07000
LogP2.59
Vapor Pressure1.2±0.3 mmHg at 25°C
Refractive Index1.447

Customs & Trade Information

HS Code2914700090
SummaryHS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,1-Dichloro-3,3-dimethyl-2-butanone?

The CAS number of 1,1-Dichloro-3,3-dimethyl-2-butanone is 22591-21-5.

What are the molecular formula and molecular weight of 1,1-Dichloro-3,3-dimethyl-2-butanone?

1,1-Dichloro-3,3-dimethyl-2-butanone has molecular formula C6H10Cl2O and molecular weight 169.049 g/mol.

What are the upstream and downstream products of 1,1-Dichloro-3,3-dimethyl-2-butanone?

For 1,1-Dichloro-3,3-dimethyl-2-butanone, Upstream Products: Pinacolone, 1-Chloropinacolone, Ethyl pivalate; Downstream Products: 1-Chloropinacolone.

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

Last updated:

How to cite: Jingsj. "1,1-Dichloro-3,3-dimethyl-2-butanone (CAS 22591-21-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17096-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.