| 释义 |
- Vapor pressure of liquid
- Distillation data
- References
{{Use dmy dates|date=July 2013}}This page provides supplementary chemical data on diethyl ether. == Material Safety Data Sheet == The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as [https://web.archive.org/web/20070630043133/http://siri.org/msds/index.php SIRI], and follow its directions. MSDS for diethyl ether is available at Mallinckrodt Baker. == Structure and properties == | Structure and properties | | Index of refraction, nD | 1.3497 at 24.8°C | | Abbe number | ? | | Dielectric constant, εr | 4.34 ε0 at 20 °C
8.1 ε0 at –64°C
10.4 ε0 at –116°C | | Bond strength | ? | | Bond length | ? | | Bond angle | ? | | Magnetic susceptibility | ? | | Surface tension | 17.0 dyn/cm at 20°C | | Viscosity[1] | 0.2950 mP·s at 0°C
0.2681 mP·s at 10°C
0.2448 mP·s at 20°C
0.2230 mP·s at 30°C | |
== Thermodynamic properties == | Phase behavior | | Triple point | 156.92 K (–116.23 °C), ? Pa | | Critical point | 467 K (194 °C), 3600 kPa | Std enthalpy change
of fusion, ΔfusHo | 7.19 kJ/mol | Std entropy change
of fusion, ΔfusSo | 46.6 J/(mol·K) | Std enthalpy change
of vaporization, ΔvapHo | 27.530 kJ/mol at 11.85°C
27.247 kJ/mol at 22.48°C | Std entropy change
of vaporization, ΔvapSo | 96.60 J/(mol·K) at 12° | | Solid properties |
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Std enthalpy change
of formation, ΔfHosolid | ? kJ/mol | Standard molar entropy,
Sosolid | ? J/(mol K) | | Heat capacity, cp | ? J/(mol K) | | Liquid properties |
|---|
Std enthalpy change
of formation, ΔfHoliquid | –271.2 kJ/mol | Standard molar entropy,
Soliquid | 253.5 J/(mol K) | Enthalpy of combustion, ΔcHo | –2726.3 kJ/mol | | Heat capacity, cp | 172.0 J/(mol K) | | Gas properties |
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Std enthalpy change
of formation, ΔfHogas | –252.7 kJ/mol | Standard molar entropy,
Sogas | 342.2 J/(mol K) | | Heat capacity, cp | 119.46 J/(mol K) at 25°C | | van der Waals' constants[2] | a = 1761 L2 kPa/mol2
b = 0.1344 liter per mole | |
Vapor pressure of liquid| P in mm Hg | 1 | 10 | 40 | 100 | 400 | 760 | 1520 | 3800 | 7600 | 15200 | 30400 | 45600 | | T in °C | –74.3 | –48.1 | –27.7 | –11.5 | 17.9 | 34.6 | 56.0 | 90.0 | 122.0 | 156.0 | — | — |
Table data obtained from CRC Handbook of Chemistry and Physics 44th ed. {{Clear}}Distillation dataVapor-liquid Equilibrium for Diethyl Ether/Methanol[4]
P = 700 mmHg | BP
Temp.
°C | % by mole ether |
|---|
| liquid | vapor |
|---|
| 55.98 | 3.90 | 25.16 | | 51.78 | 7.32 | 38.58 | | 50.00 | 9.24 | 43.84 | | 48.95 | 10.84 | 47.73 | | 46.20 | 14.02 | 54.04 | | 45.70 | 14.81 | 55.30 | | 42.25 | 21.30 | 63.51 | | 41.65 | 21.74 | 64.43 | | 41.15 | 23.83 | 65.74 | | 39.90 | 33.87 | 72.47 | | 39.45 | 29.24 | 69.58 | | 38.40 | 33.17 | 71.72 | | 33.40 | 60.85 | 83.07 | | 32.90 | 77.07 | 86.59 | | 32.48 | 82.84 | 88.57 | | 32.02 | 97.70 | 97.66 | | 30.50 | 95.02 | 94.58 | |
== Spectral data == | UV-Vis | | λmax | ? nm | | Extinction coefficient, ε | ? | | IR |
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| Major absorption bands | ? cm−1 | | NMR |
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| Proton NMR | 3.479 ppm, 1.208 ppm[5] | | Carbon-13 NMR | 65.97 ppm, 15.35 ppm[5] | | Other NMR data | | | MS |
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Masses of
main fragments | | |
References1. ^Lange's Handbook of Chemistry, 10th ed. pp 1669-1674
2. ^Lange's Handbook of Chemistry 10th ed, pp 1522-1524
3. ^{{Cite web|url=http://www.cheric.org/research/kdb/hcprop/cmpsrch.php|title=Pure Component Properties|format=Queriable database|publisher=Chemical Engineering Research Information Center|accessdate=15 May 2007}}
4. ^{{Cite web|url=http://www.cheric.org/research/kdb/hcvle/hcvle.php|title=Binary Vapor-Liquid Equilibrium Data|publisher=Chemical Engineering Research Information Center|format=Queriable database|accessdate=15 May 2007}}
5. ^1 Spectral Database for Organic Compounds (SDBS)
* {{Cite web|url=http://webbook.nist.gov/chemistry/|title=NIST Standard Reference Database|accessdate=15 May 2007}}Except where noted otherwise, data relate to standard ambient temperature and pressure. Disclaimer applies. {{DEFAULTSORT:Diethyl Ether (Data Page)}} 1 : Chemical data pages |