Basic information
- Name:
1-Methylimidazole
- CAS No.:
616-47-7
- Molecular Structure:
- Formula:
- C4H6N2
- Molecular Weight:
- 82.12
- Deleted CAS:
- 110069-11-9|120418-32-8|142504-34-5|674282-80-5|69723-05-3|864745-22-2|955156-62-4
- Synonyms:
- 1-Methyl imidazole;1-Methylimidazole (N- Methylimidazole);N-Methyl Imidazole;1-methyl-1H-imidazole;1H-imidazole, 1-methyl-;N-Methylimidazole;
- EINECS:
- 210-484-7
- Density:
- 0.996 g/cm3
- Melting Point:
- -60 °C(lit.)
- Boiling Point:
- 198.679 °C at 760 mmHg
- Flash Point:
- 92.222 °C
- Solubility:
- soluble in water
- Appearance:
- colorless transparent liquid
- Hazard Symbols:
C,
Xn,
F- Risk Codes:
- 34-19-11-20/21/22
- Safety Description:
- 26-36-45-1/2-36/37/39-16-33-29 Details
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Chemistry
Synonyms: 1-methyl-1H-imidazole, N-Methylimidazole
1-METHYLIMIDAZOLE is the chemical compound with the formula C4H6N2.Its Molecular Weight is 82.10.It is the melting point of -60 °C,and is the boiling point of 198 °C.It is clear colorless to yellow liquid.
Stability:Stable, but moisture sensitive. Incompatible with acids, acid anhydrides, strong oxidizing agents, moisture, CARBON dioxide, acid CHLORIDES.
1-METHYLIMIDAZOLE is the chemical compound with the formula C4H6N2.Its Molecular Weight is 82.10.It is the melting point of -60 °C,and is the boiling point of 198 °C.It is clear colorless to yellow liquid.
Stability:Stable, but moisture sensitive. Incompatible with acids, acid anhydrides, strong oxidizing agents, moisture, CARBON dioxide, acid CHLORIDES.
Uses
N-Methylimidazole is used as an intermediate for pharmaceuticals, textile auxiliaries,agrochemicals, dyes,pigments and other organic chemicals. It is also used in polyurethane manufacturing and epoxy resins as a curing agent.
Production
1-Methylimidazole is synthesized on an industrial scale by the Radziszewski reaction from glyoxal, formaldehyde, and a mixture of ammonia and methylamine.
The compound can also be synthesized on a laboratory scale by methylation of imidazole at the pyridine-like nitrogen and subsequent deprotonation.Similarly, 1-methylimidazole may be synthesized by first deprotonating imidazole to form a sodium salt followed by methylation. 
Toxicity Data With Reference
| 1. | D: 1.036 @ 10°, bp: 195-196°. | |||
| 2. | orl-mus LD50:1400 mg/kg | TXAPA9 Toxicology and Applied Pharmacology. 14 (1969),301. | ||
| 3. | ipr-mus LD50:380 mg/kg | TXAPA9 Toxicology and Applied Pharmacology. 14 (1969),301. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Poison by intraperitoneal route. Moderately toxic by ingestion. Explosive reaction with OSMIUM(VIII) oxide. When heated to decomposition it emits toxic fumes of NOx.
