CAS Number: 75‑05‑8
Synonyms : Acetonitrile; Methyl cyanide; Cyanomethane; Ethyl nitrile; ACN
Chemical Formula :C₂H₃N
Product Introduction
Acetonitrile is a colorless, volatile liquid with a faint, sweet-ether aroma. It is a polar aprotic solvent extensively used in HPLC, organic synthesis, battery electrolytes, and industrial processes. It’s often produced as a by-product of acrylonitrile manufacturing.
| Property | Value |
|---|---|
| Appearance | Colorless liquid |
| Odor | Sweet, ether-like |
| Density @ 25 °C | ~0.776–0.786 g/cm³ |
| Melting Point | –45.7 °C (–43.8 to –49 °C range) |
| Boiling Point | 81.6–82 °C |
| Flash Point | ~5.6 °C (closed cup) |
| Vapor Pressure @ 20 °C | ~72.8 mmHg (9.7 kPa) |
| Refractive Index (n₂₀ᴅ) | ~1.344 |
| Dipole Moment | ~3.84–3.92 D |
| Dielectric Constant @25 °C | ~36.6 |
| Solubility | Miscible with water and most organics |
| Molecular Weight | 41.05 g/mol |
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