Dimethylacetamide is N, N-dimethylacetamide (abbreviated as DMAC or DMA), also known as acetyldimethylamine, dimethylamine acetate. Dimethylacetamide is a representative amide solvent.
What Are the Key Properties of Dimethylacetamide
Basic Physical Properties
- Chemical formula: C₄H₉NO
- Molecular weight: 87.12 g/mol
- Appearance: Colorless, transparent liquid
- Odor: Mild amine-like odor
- Boiling point: ~165–166°C
- Melting point: ~−20°C
- Density: ~0.94 g/cm³ (at 20°C)
The material remains fully miscible with water and most organic solvents. Users find no difficulty mixing it with acetone, methanol, benzene, or chloroform, making it a highly adaptable solvent for a range of processes. In terms of specifications, companies often trade N,N-Dimethylacetamide DMAc under the HS Code 29241900, aligning with international customs regulations for chemical products. Its refractive index hovers at 1.438, helping chemists detect its presence or purity in custom solutions. Electrical conductivity remains low, and it dissolves both polar and non-polar solutes in solution-a property especially valued for polymer manufacturing or spinning synthetic fibers. Dimethylacetamide DMAC melts at -20°C, which means it stays liquid under typical storage environments and resists forming solids or pearls under most shipping conditions.
Key Industrial Applications of DMAC
Acrylic Fiber Production
DMAC is widely applied as a solvent in wet spinning processes for the production of acrylic fibers, ensuring uniform fiber structure and stable spinning performance.
Elastane (Polyurethane) Fibers
In the production of polyurethane-based elastane fibers, Dimethylacetamide is the solvent of choice due to its suitable evaporation rate and excellent compatibility with both wet and dry spinning processes.
Pharmaceutical Manufacturing
N,N-Dimethylacetamide is used as both a solvent and reagent in pharmaceutical synthesis, including:
X-ray contrast media production
Cephalosporin antibiotics manufacturing
Its high purity and chemical stability make DMAC suitable for pharmaceutical-grade applications.
Polymer, Film & Membrane Applications
Dimethylacetamide (DMAC) is an excellent solvent for polyimide resins in coatings and films. It is also widely used in the production of polysulfone-based dialysis membranes. A mixture of n-dimethylacetamide and lithium chloride is an effective solvent system for cellulose fibers in multiple industrial applications.
Dimethylacetamide Solvent CAS 127-19-5
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| Packaging Type | Net Weight |
|---|---|
| Steel Drum | 250 kg |
| IBC Tank | 1250 kg |
| ISO Tank | Bulk shipment |
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