This page provides supplementary chemical data on ethane.
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions.
Structure and properties | |
---|---|
Index of refraction, nD | ? |
Abbe number | ? |
Dielectric constant, εr | ? ε0 at ? °C |
Bond strength | ? |
Bond length | ? |
Bond angle | ? |
Magnetic susceptibility | ? |
Surface tension | 21.16 dyn/cm at −119.9 °C |
Phase behavior | |
---|---|
Triple point | 91 K (−182 °C), 1.1 Pa |
Critical point | 305.3 K (32.2 °C), 4.9 MPa |
Std enthalpy change of fusion, ΔfusH | 9.76 kJ/mol at −182 °C |
Std entropy change of fusion, ΔfusS | 6.46 J/(mol·K) at −182 °C |
Std enthalpy change of vaporization, ΔvapH crystal I → liquid | 14.703 kJ/mol at −89.0 °C |
Std entropy change of vaporization, ΔvapS crystal I → liquid | 79.87 J/(mol·K) at −89.0 °C |
Std enthalpy change of state transition, ΔtrsH crystal II → crystal I | 2.282 kJ/mol at −183.3 °C |
Std entropy change of state transition, ΔtrsS crystal II → crystal I | 25.48 kJ/mol at −183.3 °C |
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 | 126.7 J/(mol K) |
Heat capacity, cp | 68.5 J/(mol K) at −179 °C |
Gas properties | |
Std enthalpy change of formation, ΔfH | −83.8 kJ/mol |
Standard molar entropy, S | 229.6 J/(mol K) |
Enthalpy of combustion, ΔcH | −1560.7 kJ/mol |
Heat capacity, cp | 52.49 J/(mol K) at 25 °C |
van der Waals' constants [1] | a = 556.2 L2 kPa/mol2 b = 0.06380 L/mol |
P in mm Hg | 1 | 10 | 40 | 100 | 400 | 760 | 1520 | 3800 | 7600 | 15200 | 30400 | 45600 | |
T in °C | −159.5 | −142.9 | −129.8 | −119.3 | −99.6 | −88.6 | −75.0 | −52.8 | −32.0 | −6.4 | 23.6 | — |
Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.
Mean value for acceptable data: −183.01 °C (90.14 K).
Sources used, from ONS Open Melting Point Collection: [3]
Values considered "outliers", not included in averaging:
UV-Vis | |
---|---|
λmax | ? nm |
Extinction coefficient, ε | ? |
IR | |
Major absorption bands | ? cm−1 |
NMR | |
Proton NMR | |
Carbon-13 NMR | |
Other NMR data | |
MS | |
Masses of main fragments | |
Pentane is an organic compound with the formula C5H12—that is, an alkane with five carbon atoms. The term may refer to any of three structural isomers, or to a mixture of them: in the IUPAC nomenclature, however, pentane means exclusively the n-pentane isomer; the other two are called isopentane (methylbutane) and neopentane (dimethylpropane). Cyclopentane is not an isomer of pentane because it has only 10 hydrogen atoms where pentane has 12.
Cyclohexene is a hydrocarbon with the formula C6H10. This cycloalkene is a colorless liquid with a sharp smell. It is an intermediate in various industrial processes. Cyclohexene is not very stable upon long term storage with exposure to light and air because it forms peroxides.
This page provides supplementary chemical data on acetic acid.
This page provides supplementary chemical data on acetone.
Neopentane, also called 2,2-dimethylpropane, is a double-branched-chain alkane with five carbon atoms. Neopentane is a flammable gas at room temperature and pressure which can condense into a highly volatile liquid on a cold day, in an ice bath, or when compressed to a higher pressure.
Please find below supplementary chemical data about dichloromethane.
Cadmium fluoride (CdF2) is a mostly water-insoluble source of cadmium used in oxygen-sensitive applications, such as the production of metallic alloys. In extremely low concentrations (ppm), this and other fluoride compounds are used in limited medical treatment protocols. Fluoride compounds also have significant uses in synthetic organic chemistry. The standard enthalpy has been found to be -167.39 kcal. mole−1 and the Gibbs energy of formation has been found to be -155.4 kcal. mole−1, and the heat of sublimation was determined to be 76 kcal. mole−1.
The table below provides information on the variation of solubility of different substances in water with temperature, at one atmosphere pressure. Units of solubility are given in grams per 100 millilitres of water, unless shown otherwise. The substances are listed in alphabetical order.
This page provides supplementary chemical data on benzene.
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight, the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture. Boiling points are reported at a pressure of 760 mm Hg unless otherwise stated. Where the mixture separates into layers, values are shown for upper (U) and lower (L) layers.
This page provides supplementary chemical data on isopropanol.
This page provides supplementary chemical data on glycerol.
This page provides supplementary chemical data on cyclohexane.
This page provides supplementary chemical data on carbon disulfide.
This page provides supplementary chemical data on pyridine.
This page provides supplementary chemical data on n-hexane.
This page provides supplementary chemical data on dimethyl sulfoxide.
This page provides supplementary chemical data on o-Xylene.
This page provides supplementary chemical data on trichloroethylene.