CAS Number: 127‑19‑5
Synonyms: N,N‑Dimethylacetamide; DMAc; N,N‑Dimethyl‑acetamide; Acetyl dimethylamine
Chemical Formula :C₄H₉NO
Product Introduction
DMAc is a clear, highly polar, water-miscible aprotic solvent with a mild amine-like odor. Widely used in organic synthesis, polymer production, electronics, and pharmaceutical manufacturing. Classified as a Substance of Very High Concern (SVHC) due to reproductive toxicity.
| Property | Value |
|---|---|
| Appearance | Colorless to slightly yellow, hygroscopic liquid |
| Odor | Weak ammonia/fishy odor |
| Melting Point | ~–20 °C |
| Boiling Point | 164–166 °C |
| Density @ 25 °C | 0.937–0.944 g/mL |
| Vapor Pressure @ 25 °C | ~2–4 mm Hg (0.27–0.53 kPa) |
| Refractive Index (n₂₀ᴅ) | ~1.430–1.437 |
| Solubility | Completely miscible with water, alcohols, ethers, aromatics |
| Molecular Weight | 87.12 g/mol |
| Flash Point | 58 °C (CC) |
| Vapor Density | ~2.5 × air |
| Explosive Limits | 1.8–11.5 % |
| LD₅₀ (oral, rat) | ~4.3–4.8 g/kg |
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