The density of dimethylacetamide (DMAC) is 0.937 g/cm³ at 20 °C (68 °F). It is a colorless, high-boiling, and water-miscible liquid commonly used as a polar solvent.
- Density at 25°C: 0.937 g/mL
- Density at 20°C: 0.94 g/cm³
- Density at 16°C: 0.945 g/cm³
- Boiling Point: 165.1°C (329°F)
- Melting Point: −20°C (−4°F)
CAS 127-19-5 DMAC is slightly less dense than water, which affects how it behaves in liquid handling and mixing processes.
Dimethylacetamide Specification Table
| Chemical Name | Dimethylacetamide (DMAC) |
| CAS Number | 127-19-5 |
| Density | 0.937 g/cm³ |
| Temperature | 20 °C (68 °F) |
| Appearance | Colorless liquid |
| Solvent Type | Polar aprotic solvent |
Why Density Matters for DMAC
The density of dimethylacetamide (DMAc) solvent is critical in industrial, chemical, and quality control applications:
- Polymer and fiber production: Essential for wet spinning acrylic and spandex fibers, ensuring precise polymer solution concentration.
- Solvent quality control: Verifies solvent purity and concentration by confirming density (0.937 g/mL).
- Liquid-liquid extraction: Facilitates mass-volume conversion and process design (miscible with multiple solvents).
- Environmental monitoring: Identifies/quantifies DMAc-containing wastewater for specialized treatment.
- Battery technology: Serves as a co-solvent in zinc-ion battery electrolytes; density influences solvation structure and electrolyte efficiency.
Comparison With Other Solvents
| Solvent | Density (g/cm³) | Boiling Point (°C) | Key Comparison vs. DMAc |
|---|---|---|---|
| Dimethylacetamide DMAc | ~0.94 (at 20°C) | 165.1 | Reference polar aprotic solvent |
| N,N-Dimethylformamide (DMF) | ~0.944–0.949 | ~153 | Slightly denser, lower boiling point; similar polar properties |
| Dimethyl Sulfoxide (DMSO) | 1.10 | 189 | Much denser, higher boiling point; denser alternative for similar polar applications |
| Water | 1.00 | 100 | DMAc is slightly less dense than water |
what is dimethylacetamide solvent used for
- Fiber Production
- Polymer & Resins Manufacturing.
- Pharmaceutical Solvent
- Chemical Synthesis
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