2-Pentanone, 3-hydroxy-

Also known as: 3-Hydroxy-2-pentanone, 3-hydroxypentan-2-one, Acetyl ethyl carbinol, 1-Acetyl-1-propanol, 1-Hydroxypropyl methyl ketone, 2-Pentanon-3-ol, acetopropanol, acetyl-propanol

2-Pentanone, 3-hydroxy- (CAS 3142-66-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H10O2 and a molecular weight of 102.13200 g/mol. Key properties include a melting point of 2.5°C (estimate), a boiling point of 147.5ºC at 760mmHg, a density of 0.962g/cm3 and a flash point of 53.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3142-66-3
Jingsj CID: J-1958382-5
Molecular Formula: C₅H₁₀O₂
Molecular Weight: 102.13200 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	2.5°C (estimate)
Boiling Point	147.5ºC at 760mmHg
Density	0.962g/cm3
Flash Point	53.8ºC
Exact Mass	102.06800
PSA	37.30000
LogP	0.34630
Refractive Index	1.418

Activity & Biological Data

Additional Information	[1]. Otmar Frohlich, et al. Additional volatile constituents of carambola (Averrhoa carambola L.) fruit. Flavour Fragr. J., 4: 1989, 177-184.

Frequently Asked Questions

What is the CAS number of 2-Pentanone, 3-hydroxy-?

The CAS number of 2-Pentanone, 3-hydroxy- is 3142-66-3.

What are the molecular formula and molecular weight of 2-Pentanone, 3-hydroxy-?

2-Pentanone, 3-hydroxy- has molecular formula C5H10O2 and molecular weight 102.13200 g/mol.

What are the upstream and downstream products of 2-Pentanone, 3-hydroxy-?

For 2-Pentanone, 3-hydroxy-, Upstream Products: Propionaldehyde, Sorbitol, 2-Pentanone; Downstream Products: 2,3-Pentanedione.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Pentanone, 3-hydroxy- (CAS 3142-66-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958382-5 (accessed 2026-11-09).

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