Substance profile
2-Methylcyclohexanone
2-Methylcyclohexanone is a water-white to pale yellow liquid with an acetone-like odor.
01 · Identification
What 2-Methylcyclohexanone is
2-Methylcyclohexanone is a water-white to pale yellow liquid with an acetone-like odor. Its molecular formula is C7H12O and its molecular weight is 112.17 g/mol. It boils at 165 °C, melts at -14 °C.
Under the GHS it carries the signal word Warning. It is classed as flammable agents - 2nd degree.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H226 | Flammable liquid and vapour. |
| H332 | Harmful if inhaled. |
Precautionary statements: P210, P233, P241, P242, P260, P271, P304, P312, P403
03 · Physical and chemical properties
2-Methylcyclohexanone properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 165.1 °C (329.2 °F) | HSDB | |
| 162.78 °C (325 °F) | NIOSH | ||
| 165 °C (329 °F) | at 760 mmHg | CAMEO | |
| Melting point | -14 °C (6.8 °F) | HSDB | |
| -13.89 °C (7 °F) | NIOSH | ||
| -21.56 °C (-6.8 °F) | CAMEO | ||
| Density | 0.93 g/cm³ | NIOSH | |
| 0.925 g/cm³ | at 20 °C | HSDB | |
| Solubility | Insol in water; sol in alcohol and ether | HSDB | |
| Insoluble | NIOSH | ||
| Insoluble (NIOSH, 2024) | CAMEO | ||
| Vapor pressure | 1 mmHg | NIOSH | |
| Flash point | 47.78 °C (118 °F) | NIOSH | |
| Lower explosive limit (LEL) | Combustible | HSDB | |
| Class II Combustible Liquid: Fl.P. at or above 100 °F and below 140 °F. | NIOSH | ||
| Vapor density | 3.86 (air = 1) | HSDB | |
| Odor threshold | Odor Threshold Low: 0.5 [ppm] | Haz-Map | |
| Odor threshold from CHEMINFO | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 2-Methylcyclohexanone
Incompatible materials
Strong oxidizers
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Contact with strong oxidizers may cause fires and explosions (USCG, 1999).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2-Methylcyclohexanone in the storage compatibility matrix →