5-Chloro-2-pentanone
Also known as: 1-Chloro-4-oxopentane, 3-Chloropropyl methyl ketone, 3-Acetyl-1-chloropropane, 5-Chloropentan-2-one, Methyl 3-chloropropyl ketone, Hydroxychloroquine sulfate Impurity 2
5-Chloro-2-pentanone (CAS 5891-21-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H9ClO and a molecular weight of 120.577 g/mol. Key properties include a melting point of -48ºC, a boiling point of 172.8±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 67.2±13.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5891-21-4
- Jingsj CID
- J-12696-5
- Molecular Formula
- C5H9ClO
- Molecular Weight
- 120.577 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -48ºC |
|---|---|
| Boiling Point | 172.8±23.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 67.2±13.7 °C |
| Exact Mass | 120.034195 |
| PSA | 17.07000 |
| LogP | 0.83 |
| Vapor Pressure | 1.3±0.3 mmHg at 25°C |
| Refractive Index | 1.417 |
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 5-Chloro-2-pentanone?
The CAS number of 5-Chloro-2-pentanone is 5891-21-4.
What are the molecular formula and molecular weight of 5-Chloro-2-pentanone?
5-Chloro-2-pentanone has molecular formula C5H9ClO and molecular weight 120.577 g/mol.
What are the upstream and downstream products of 5-Chloro-2-pentanone?
For 5-Chloro-2-pentanone, Upstream Products: 5-Chloro-1-pentyne, 2-Acetylbutyrolactone, Methyltriphenylphosphonium bromide; Downstream Products: 2-(5-bromo-4-oxopentyl)isoindole-1,3-dione, 2-(4-Oxopentyl)-1H-isoindole-1,3(2H)-dione, (S)-2-Methylproline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Chloro-2-pentanone (CAS 5891-21-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12696-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.