Substance profile
4-Methylimidazole
4-Methylimidazole is crystals.
01 · Identification
What 4-Methylimidazole is
4-Methylimidazole is crystals. Its molecular formula is C4H6N2 and its molecular weight is 82.1 g/mol. It boils at 263 °C, melts at 56 °C, is very soluble in water.
Under the GHS it carries the signal word Danger.
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.
03 · Physical and chemical properties
4-Methylimidazole 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 | 263 °C (505.4 °F) | HSDB | |
| 263 °C (505.4 °F) | at 760 mmHg | DOE PAC | |
| Melting point | 56 °C (132.8 °F) | HSDB | |
| Density | 1.0416 g/cm³ | at 14 °C | HSDB |
| Solubility | Very soluble in ethanol | HSDB | |
| Vapor pressure | 0.01 mmHg | Haz-Map | |
| Flash point | 157 °C (314.6 °F) | HSDB | |
| Autoignition temperature | 555 °C (1031 °F) | HSDB | |
| Lower explosive limit (LEL) | Explosive limits 1.8-10.7 Vol. % | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 4-Methylimidazole
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Materials to avoid: Strong oxidizing agents, acids, acid chlorides, acid anhydrides.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check 4-Methylimidazole in the storage compatibility matrix →