Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: 1-Methylimidazole
CAS Number: 616-47-7
Alias: N-Methylimidazole, NMI, 1-Methyl-1H-imidazole
Chemical Full Name: 1-methyl-1H-imidazole
Molecular Formula: C4H6N2
Molecular Weight: 82.10
EINECS: 210-484-7
Structural Information
- Structure Type: Nitrogen-containing heterocyclic organic compound (imidazole derivative)
- Structural Features: Five-membered imidazole ring with methyl substitution on N1 nitrogen; two nitrogen atoms with different electron cloud density, strong nucleophilic catalytic activity; tertiary amine structure can form complexes with metal ions, catalyze epoxy ring-opening crosslinking
- Characteristic: Low-viscosity alkaline liquid, miscible with water and most organic solvents, excellent epoxy latent curing accelerator
Physical & Chemical Properties
- Appearance: Colorless to pale yellow transparent liquid
- Odor: Mild pungent amine odor
- Melting Point: -60 °C
- Boiling Point: 198 °C
- Flash Point: 92 °C (open cup)
- Density (20℃): 1.036 g/cm3
- Refractive Index (20℃): 1.496
- Solubility: Fully miscible with water, alcohols, ketones, esters, aromatic solvents; insoluble in alkane mineral oil
- Stability: Stable under sealed cool storage; absorbs moisture and CO? in air; reacts violently with strong acids to form imidazolium salts; catalyzes epoxy curing at medium temperature; oxidizes slowly under long-term strong light exposure
Synthesis & Applications
Production Method
Methylation reaction of imidazole with methyl chloride/dimethyl sulfate under alkaline catalyst, vacuum rectification to remove unreacted raw materials and impurities to obtain high-purity finished product.
Main Applications
- Epoxy resin curing accelerator: Latent curing agent for electronic epoxy potting glue, PCB composite substrate, insulating casting resin
- Pharmaceutical intermediate: Raw material for synthetic antifungal drugs, ionic liquid precursors, drug chelating ligands
- Organic synthesis catalyst: Nucleophilic catalyst for esterification, polyurethane synthesis, polymer polymerization
- Ionic liquid raw material: Key precursor for imidazolium ionic liquids used in extraction, electrochemistry
- Adhesive auxiliary: Quick-setting accelerator for structural epoxy adhesive
Safety & Storage Instructions
GHS Hazard Classification
- H226 Flammable liquid and vapor
- H314 Causes severe skin burns and eye damage
- H332 Harmful if inhaled
- H335 May cause respiratory irritation from vapor inhalation
Personal Protection
Organic vapor respirator, full-face splash goggles, butyl nitrile impermeable gloves, alkali-resistant protective overalls; operate in fume hood, avoid direct skin contact and vapor inhalation.
Storage Condition
Hermetically sealed lined iron drum, cool dry ventilated warehouse ≤30℃; isolate strong acids, oxidants, avoid air contact to prevent moisture absorption.
Transportation
Class 8 corrosive alkaline liquid, UN3267, Packaging Class II; separate from acidic chemicals during transit, prevent drum leakage.
Quality Specifications
- Purity (GC): ≥99.0%
- Moisture: ≤0.3%
- Chroma (Pt-Co): ≤30
- Free imidazole: ≤0.1%
Information Summary Table
| Item | Specification |
| CAS Number | 616-47-7 |
| Product Name | 1-Methylimidazole (NMI) |
| Synonym | N-Methylimidazole |
| Molecular Formula | C4H6N2 |
| Molecular Weight | 82.10 |
| Appearance | Colorless pale yellow transparent liquid |
| Flash Point | 92℃ |
| Core Advantage | Heterocyclic amine catalyst, epoxy curing accelerator, pharmaceutical intermediate |
| Storage Rule | Sealed cool storage, separate from strong acid chemicals |
| Hazard Property | Corrosive alkaline flammable liquid, severe skin/eye burns, harmful inhalation |
| Main Usage | Epoxy curing accelerator, pharmaceutical intermediate, ionic liquid raw material, organic synthesis catalyst |
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