3-Chloro-2-butanone
Also known as: 1-Chloroethyl methyl ketone, 3-Chlorobutan-2-one, 2-Butanone, 3-chloro-, 1-Acetyl-1-chloroethane, 3-Chlorobutanone, 3-CL-MEK
3-Chloro-2-butanone (CAS 4091-39-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H7ClO and a molecular weight of 106.551 g/mol. Key properties include a melting point of <-60ºC, a boiling point of 114.7±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 21.1±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour and H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 4091-39-8
- Jingsj CID
- J-1173611-1
- Molecular Formula
- C4H7ClO
- Molecular Weight
- 106.551 g/mol
- Category
- Ketones
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <-60ºC |
|---|---|
| Boiling Point | 114.7±8.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 21.1±0.0 °C |
| Exact Mass | 106.018539 |
| PSA | 17.07000 |
| LogP | 0.77 |
| Vapor Pressure | 19.7±0.2 mmHg at 25°C |
| Refractive Index | 1.406 |
| Additional Property | 3 g/100 mL |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2914700090 |
|---|---|
| Summary | HS: 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 3-Chloro-2-butanone?
The CAS number of 3-Chloro-2-butanone is 4091-39-8.
What are the molecular formula and molecular weight of 3-Chloro-2-butanone?
3-Chloro-2-butanone has molecular formula C4H7ClO and molecular weight 106.551 g/mol.
Is 3-Chloro-2-butanone hazardous?
3-Chloro-2-butanone has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed.
What are the upstream and downstream products of 3-Chloro-2-butanone?
For 3-Chloro-2-butanone, Upstream Products: 2-Chloro-2-butene (mixture of cis and trans), ch3cho, Carbon tetrachloride; Downstream Products: 4,5-Dimethylthiazole, 2-Chloropropionic acid, 3-Acetoxy-2-butanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Chloro-2-butanone (CAS 4091-39-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1173611-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.