This page provides supplementary chemical data on methane.
The handling of this chemical may incur notable safety precautions. [1]
Structure and properties | |
---|---|
Index of refraction, nD | 1.000444 [2] |
Dielectric constant, εr | 1.6761 ε0 at −182 °C [3] 1.0008181 ε0 at −20 °C [4] |
Bond strength | ? |
Bond length | 0.10870 nm [5] |
Bond angle | 109.5° |
Magnetic susceptibility | −17.4×10−6 cm3/mol [6] |
Phase behavior | |
---|---|
Triple point | 90.67 K (−182.48 °C), 0.117 bar [7] |
Critical point | 190.6 K (−82.6 °C), 46.0 bar [7] |
Std enthalpy change of fusion, ΔfusH | 1.1 kJ/mol |
Std entropy change of fusion, ΔfusS | 12.1 J/(mol·K) |
Std enthalpy change of vaporization, ΔvapH | 8.17 kJ/mol |
Std entropy change of vaporization, ΔvapS | ? J/(mol·K) |
Solid properties | |
Std enthalpy change of formation, ΔfH | ? kJ/mol |
Standard molar entropy, S | ? J/(mol K) |
Heat capacity, cp | ? J/(mol K) |
Liquid properties | |
Std enthalpy change of formation, ΔfH | ? kJ/mol |
Standard molar entropy, S | ? J/(mol K) |
Heat capacity, cp | ? J/(mol K) |
Gas properties | |
Std enthalpy change of formation, ΔfH | −74.6 kJ/mol [8] |
Standard molar entropy, S | 186.3 J/(mol K) [8] |
Enthalpy of combustion ΔcH | −891 kJ/mol [9] |
Heat capacity, cp | 35.7 J/(mol K) [8] |
van der Waals' constants [10] | a = 228.29 L2 kPa/mol2 b = 0.04278 L/mol |
P (mm Hg) | 1 | 10 | 40 | 100 | 400 | 760 | 1520 | 3800 | 7600 | 15200 | 30400 | 45600 | |
T (°C) | −205.9(s) | −195.5(s) | −187.7(s) | −181.4 | −168.8 | −161.5 | −152.3 | −138.3 | −124.8 | −108.5 | −86.3 | — |
Table data obtained from CRC Handbook of Chemistry and Physics 44th ed. Annotation "(s)" indicates equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid. Note that these are all negative temperature values.
UV-Vis | |
---|---|
λmax | ? nm |
Extinction coefficient, ε | ? |
IR | |
Major absorption bands | 3019, 2917, 1534, 1306 cm−1 [11] |
NMR | |
Proton NMR | |
Carbon-13 NMR | −2.3 ppm [12] |
Other NMR data | |
MS | |
Masses of main fragments | |
This page provides supplementary chemical data on acetic acid.
This page provides supplementary chemical data on acetone.
This page provides supplementary data to the article properties of water.
This page provides supplementary chemical data on methanol.
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This page provides supplementary chemical data on 1-Propanol (n-propanol).
This page provides supplementary chemical data on cyclohexane.
This page provides supplementary chemical data on nitromethane.
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This page provides supplementary chemical data on m-Xylene.
This page provides supplementary chemical data on 1,2-dichloroethane.
This page provides supplementary chemical data on tetrachloroethylene.