Diacetone alcohol
Also known as: 4-Hydroxy-4-methyl-2-pentanone, 4-Hydroxy-4-methylpentan-2-one, 2-Methylpentan-2-ol-4-one, 2-Methyl-3-pentanol-4-one, 2-Hydroxy-2-methyl-4-pentanone, 4-hydroxy-2-keto-4-methylpentane, Pyranton, Dimethylacetonylcarbinol, 2-Pentanone, 4-hydroxy-4-methyl-
Diacetone alcohol (CAS 123-42-2) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C6H12O2 and a molecular weight of 116.158 g/mol. Key properties include a melting point of -42.8 °C, a boiling point of 166 ºC, a density of 0.938 and a flash point of 58 ºC. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 123-42-2
- Jingsj CID
- J-3212-8
- Molecular Formula
- C6H12O2
- Molecular Weight
- 116.158 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -42.8 °C |
|---|---|
| Boiling Point | 166 ºC |
| Density | 0.938 |
| Flash Point | 58 ºC |
| Exact Mass | 116.083733 |
| PSA | 37.30000 |
| LogP | -0.09 |
| Additional Property | 4 (vs air) |
| Vapor Pressure | 0.5±0.6 mmHg at 25°C |
| Refractive Index | 1.427 |
| Additional Property | MISCIBLE |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2914400090 |
|---|---|
| Summary | 2914400090 other ketone-alcohols and ketone-aldehydes。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Diacetone alcohol?
The CAS number of Diacetone alcohol is 123-42-2.
What are the molecular formula and molecular weight of Diacetone alcohol?
Diacetone alcohol has molecular formula C6H12O2 and molecular weight 116.158 g/mol.
Is Diacetone alcohol hazardous?
Diacetone alcohol has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Diacetone alcohol?
For Diacetone alcohol, Upstream Products: 4-Chloro-1,1-dimethoxybutane, 2-Methyl-2,4-pentanediol, Benzyl chloride; Downstream Products: 2,4,6-Trimethyl-3-cyclohexene-1-carbaldehyde, Mesityl oxide, Ethoxyquin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diacetone alcohol (CAS 123-42-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3212-8 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.