Methyl isobutyl ketone
CAS 108-10-1C6H12O100.16 g/mol
Methyl Isobutyl Ketone (MIBK) can cause cancer according to California Labor Code. It can cause developmental toxicity according to The Environmental Protection Agency (EPA).
IUPAC: 4-methylpentan-2-one
PubChem
Physical & Chemical Properties
| Melting Point | -120.5 °F (NTP, 1992) |
| Boiling Point | 243 to 244 °F at 760 mmHg (NTP, 1992) |
| Density | 0.802 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Solubility | 1 to 5 mg/mL at 70 °F (NTP, 1992) |
| Flash Point | 73 °F (NTP, 1992) |
| Vapor Pressure | 5 mmHg at 67.5 °F ; 10 mmHg at 86.0 °F (NTP, 1992) |
| Appearance | Methyl isobutyl ketone appears as a clear colorless liquid with a pleasant odor. Flash point 73 °F. Less dense than water. Vapors heavier than air. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2914
Data: UN Comtrade
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