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. Basic Information
Name: N,N-Dimethylacetamide
Abbreviation: DMAc, DMAC
Alias: Acetic acid dimethylamide
CAS No.: 127-19-5
Molecular Formula: C4H9NO
Molecular Weight: 87.12
2. Physical and Chemical Properties
Physical Properties
- Appearance: Colorless transparent liquid
- Odor: Faint weak amine odor
- Solubility: Miscible with water, alcohols, ketones, esters, ethers and aromatic solvents; slightly soluble in aliphatic hydrocarbons
- Melting Point: ?20 °C
- Boiling Point: 165–166 °C
- Density: 0.942 g/cm3 (20 °C)
- Refractive Index: 1.438 (20 °C)
- Hygroscopicity: Strongly hygroscopic, readily absorbs moisture from air
Chemical Properties
- Molecular Structure: Polar aprotic amide solvent; acetyl group bonded to dimethyl-substituted nitrogen atom
- Hydrolysis behavior: Slow hydrolysis at room temperature; rapid decomposition under strong acid / strong alkali heating to generate acetic acid and dimethylamine
- Polar dissolving capacity: Excellent solubility for polymers, resins, pharmaceuticals, inorganic metal salts and aromatic compounds
- Thermal stability: Stable below 140 °C; prolonged high temperature leads to partial degradation and amine release
- Photostability: Stable under indoor ambient light; long-term UV exposure turns pale yellow
- Compatibility: Compatible with most polar organic solvents; incompatible with strong oxidants, concentrated strong acids, strong dehydrating agents and alkali metals
3. Main Application Fields
1. Industrial High-Boiling Polar Solvent (Core Application)
- Spinning solvent for aramid fiber, polyimide, polyurethane and high-performance polymer membranes
- Diluent for high-temperature resistant coatings, wire enamel and electronic ink
- Medium for lithium battery slurry and advanced composite material processing
2. Pharmaceutical Synthetic Reaction Medium
High-polar reaction solvent for heterocyclic APIs, peptide synthesis, coupling and cyclization reactions to improve reaction yield
3. Electronic Chemical Raw Material
Cleaning solvent for semiconductor wafers and circuit boards; auxiliary solvent for photoresist formulations
4. Laboratory Analytical Reagent
Mobile phase additive for high-performance liquid chromatography; extraction solvent for polar organic compounds
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 127-19-5 |
| Molecular Formula | C4H9NO |
| Molecular Weight | 87.12 |
| Appearance | Colorless clear liquid |
| GC Purity | Industrial Grade ≥99.0%; Electronic/Pharma Grade ≥99.5% |
| Water Content (KF) | ≤0.10% |
| Free Acid (Acetic acid) | ≤0.03% |
| Free Base (Dimethylamine) | ≤0.02% |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | 200L sealed steel drum / 25L PE plastic drum |
| Storage Condition | Hermetically sealed cool dry ventilated warehouse below 25 °C; segregated from moisture, acids and alkalis |
| Transportation Requirement | Toxic polar amide liquid, leak-proof sealed packaging |
| Shelf Life | 24 months under intact sealed packaging |
Safety Warning
Toxic organic amide liquid with skin penetration risk. Vapor irritates eyes, mucous membranes and respiratory tract; long-term skin contact may cause liver adverse effects. All operations must be performed in ventilated fume hood with chemical-resistant gloves and safety goggles. Strictly airtight storage to prevent moisture absorption and hydrolysis. Waste liquid belongs to nitrogen-containing organic hazardous waste and requires professional centralized disposal. Avoid mixing with concentrated acid or alkali to prevent release of corrosive dimethylamine gas.
...
Product
