3-Hydroxy-3-methyl-2-butanone
Also known as: 1-Hydroxy-1-methylethyl methyl ketone, 2-Butanone, 3-hydroxy-3-methyl-, 2-Hydroxy-2-methyl-3-butanone, 2-Methyl-2-hydroxybutan-3-one, 3-hydroxy-3-methylbutan-2-one, 3-methylacetoin, Acetyldimethylcarbinol, Dimethylacetylcarbinol, Methylacetoin
3-Hydroxy-3-methyl-2-butanone (CAS 115-22-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H10O2 and a molecular weight of 102.132 g/mol. Key properties include a melting point of 140-141 °C(lit.), a boiling point of 145.2±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 42.2±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 115-22-0
- Jingsj CID
- J-33843-2
- Molecular Formula
- C5H10O2
- Molecular Weight
- 102.132 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 140-141 °C(lit.) |
|---|---|
| Boiling Point | 145.2±8.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 42.2±0.0 °C |
| Exact Mass | 102.068077 |
| PSA | 37.30000 |
| LogP | -0.08 |
| Vapor Pressure | 1.9±0.6 mmHg at 25°C |
| Refractive Index | 1.420 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
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 3-Hydroxy-3-methyl-2-butanone?
The CAS number of 3-Hydroxy-3-methyl-2-butanone is 115-22-0.
What are the molecular formula and molecular weight of 3-Hydroxy-3-methyl-2-butanone?
3-Hydroxy-3-methyl-2-butanone has molecular formula C5H10O2 and molecular weight 102.132 g/mol.
Is 3-Hydroxy-3-methyl-2-butanone hazardous?
3-Hydroxy-3-methyl-2-butanone has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
What are the upstream and downstream products of 3-Hydroxy-3-methyl-2-butanone?
For 3-Hydroxy-3-methyl-2-butanone, Downstream Products: 2,2-Dimethylfuran-3(2H)-one, 2-Hydroxyisobutyric acid, 2,3-Dimethyl-2,3-butanediol.
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-Hydroxy-3-methyl-2-butanone (CAS 115-22-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33843-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.