CAS 127-19-5 Dimethylacetamide (DMAc) has a melting point of −20 °C (−4 °F).
This low melting point indicates that DMAc remains liquid under standard laboratory and industrial temperatures, making it an ideal solvent for chemical reactions and polymer processing.
DMAC Melting Point Specification Table
| Melting Point / Freezing Point | -20°C (-4°F) |
| Boiling Point (760 mmHg) | 164.5 - 166°C (328 - 331°F) |
| Appearance | Colorless liquid |
| Odour | Faint, ammonia-like |
| Density (at 20/25°C) | 0.937 - 0.943 g/cm³ |
| Flash Point (Closed Cup) | 63 - 70°C (145 - 158°F) |
| Solubility in Water | Miscible (completely) |
| Vapor Pressure (at 20°C) | 1.5 - 1.76 hPa |
| Auto-ignition Temperature | 490°C (914°F) |
| Purity (Typical Industrial) | ≥ 99.5% - 99.7% |
| Water Content | ≤ 0.05% - 0.1% max |
Comparison With Other Solvents
| Solvent | Melting Point (°C) |
|---|---|
| Dimethylacetamide (DMAc) | −20 |
| NMP (N-Methyl-2-pyrrolidone) | −24 |
| DMSO | 18 |
| Acetonitrile | −45 |
| Acetone | −95 |
The melting point of Dimethylacetamide DMAc solvent is commonly listed as -20°C. As a stable yet flammable dipolar non-protonic solvent, it finds extensive use in fiber and pharmaceutical manufacturing. However, DMAc is classified as a hazardous substance: it can be absorbed through the skin and is considered a suspected reproductive toxin, requiring careful handling.
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