1,2-Dimethylimidazole
- Createtime： 2026-04-14
- Updatetime： 2026-07-24
Product Details
| useage |
Industrial use
|
| deliveryInfo |
|
| appearance |
liquid
|
| Molecular Weight |
96.13
|
| aliasen |
|
| supplyCapacity |
50000MT/Month
|
| harbor |
Qingdao,China
|
| minorder |
1KG
|
| Appearance |
Colorless to pale yellow transparent liquid
|
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.
1,2-Dimethylimidazole
1. Basic Information
Name: 1,2-Dimethylimidazole
Alias: N1,2-Dimethylimidazole
CAS No.: 1739-84-0
Molecular Formula: C5H8N2
Molecular Weight: 96.13
Category: Imidazole heterocyclic curing agent, pharmaceutical intermediate, epoxy resin accelerator, organic synthesis catalyst
2. Physical and Chemical Properties
Physical Properties
- Appearance: Colorless to pale yellow transparent liquid
- Odor: Typical amine heterocyclic pungent odor
- Solubility: Fully miscible with water, methanol, ethanol, acetone, DMF; soluble in toluene, dichloromethane; slightly soluble in aliphatic alkanes
- Melting Point: 8–10 ℃
- Boiling Point: 204–206 ℃
- Density (20℃): 0.980–0.986 g/cm3
- Refractive Index nD20: 1.498–1.502
- Hygroscopy: Strongly hygroscopic, quickly absorbs water and carbon dioxide from air
- Aqueous property: Aqueous solution alkaline, pH＞10; stable at room temperature neutral water
Chemical Properties
- Molecular structure: Imidazole ring substituted with methyl at N1 and C2 positions, tertiary nitrogen with strong nucleophilicity
- Epoxy curing acceleration: Excellent latent curing accelerator for epoxy resin, low-temperature curing performance
- Nucleophilic catalysis: Acts as organic base catalyst for esterification, acylation, ring-opening polymerization reactions
- Salt formation characteristic: Reacts with inorganic/organic acids to form soluble imidazolium salts
- Thermal stability: Stable below 160 ℃; long-time high temperature heating will produce slight carbonization discoloration
- Photostability: Slightly light-sensitive; long-term light exposure deepens yellow color
- Compatibility: Compatible with polar organic solvents and epoxy prepolymers; incompatible with concentrated strong acid, acid anhydrides, halocarbons
3. Main Application Fields
1. Epoxy Resin Curing Accelerator (Core Application)
Latent curing agent for electronic packaging epoxy, adhesive, coating; improves curing speed and mechanical properties
2. Pharmaceutical Imidazole Intermediate
Building block for anti-fungal, anti-ulcer small molecule APIs
3. Organic Synthetic Catalyst
Organic base catalyst for esterification, polyurethane synthesis, heterocyclic cyclization reactions
4. Electroplating & Corrosion Inhibitor
Additive for metal surface treatment, mild metal corrosion inhibitor
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 1739-84-0 |
| Molecular Formula | C5H8N2 |
| Appearance | Pale yellow clear liquid without suspended precipitate |
| GC Purity | Electronic Grade ≥99.0%, Industrial Grade ≥98.0% |
| Water Content (KF) | ≤0.20% |
| Chroma (APHA) | ≤100 |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | Nitrogen-sealed amber glass bottle; bulk 200kg galvanized iron drum |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 ℃, air isolation to prevent moisture absorption, separate from acidic raw materials |
| Transportation Requirement | Strongly hygroscopic alkaline imidazole liquid, sealed moisture-proof packaging, away from acid and food chemicals |
| Shelf Life | 24 months under nitrogen sealed storage |
