Ether · C₄H₁₀O
A highly volatile, flammable ether solvent. Extraction and reaction solvent; historically an anaesthetic. Very low flash point — a fire-safety concern.
| Formula | C₄H₁₀O |
| CAS number | 60-29-7 |
| Synonyms | ether, ethoxyethane, DEE |
| Molar mass | 74.12 g/mol (Computed from the molecular formula and CODATA atomic weights) |
| Normal boiling point | 34.6 °C (NIST Chemistry WebBook (webbook.nist.gov)) |
| Liquid density | 713 kg/m³ (Reference liquid density near 20–25 °C (NIST WebBook)) |
Antoine equation (mmHg/°C): log₁₀(P) = 6.92032 − 1064.07 / (228.8 + T), valid -61–55 °C. Source: NIST Chemistry WebBook (webbook.nist.gov).
| °C | kPa | bar | mmHg | psia |
|---|---|---|---|---|
| -61.0 | 0.51 | 0.0051 | 3.8 | 0.073 |
| -37.8 | 2.98 | 0.0298 | 22.3 | 0.432 |
| -14.6 | 11.96 | 0.1196 | 89.7 | 1.734 |
| 8.6 | 36.56 | 0.3656 | 274.2 | 5.303 |
| 31.8 | 91.64 | 0.9164 | 687.3 | 13.291 |
| 55.0 | 197.63 | 1.9763 | 1482.4 | 28.664 |
Using its Antoine constants (NIST Chemistry WebBook (webbook.nist.gov)), the saturation pressure of diethyl ether at 25 °C is about 71.23 kPa. Use the calculator above for any temperature within -61–55 °C.
Diethyl ether boils at 34.6 °C at atmospheric pressure (NIST Chemistry WebBook (webbook.nist.gov)). At that temperature its vapor pressure equals one atmosphere (760 mmHg).
Diethyl ether (C₄H₁₀O, CAS 60-29-7) has a molar mass of 74.12 g/mol.