O-Xylene (data page)
This page provides supplementary chemical data on o-Xylene.
Material Safety Data Sheet
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 MSDS Search Engine, and follow its directions. MSDS is available from MATHESON TRI-GAS, INC. in the SDSdata.org database.
Structure and properties
Structure and properties | |
---|---|
Index of refraction,[1] nD | 1.5058 at 20°C |
Abbe number | ? |
Dielectric constant,[2] εr | 2.568 ε0 at 20 °C |
Bond strength | ? |
Bond length | ? |
Bond angle | ? |
Magnetic susceptibility | ? |
Surface tension[3] | 30.10 dyn/cm at 20°C |
Viscosity[4] | 1.1049 mPa·s at 0°C 0.8102 mPa·s at 20°C 0.6270 mPa·s at 40°C 0.4168 mPa·s at 80°C 0.2626 mPa·s at 140°C |
Solubility[5] | 0.171 g/L at 25°C 0.21 g/L at 45°C |
Thermodynamic properties
Phase behavior | |
---|---|
Triple point | 247.8 K (−25.3 °C), ? Pa |
Critical point | 631 K (358 °C), 3700 kPa |
Std enthalpy change of fusion, ΔfusH |
13.6 kJ/mol |
Std entropy change of fusion, ΔfusS |
54.87 J/(mol·K) at −25.3 |
Std enthalpy change of vaporization, ΔvapH |
36.24 kJ/mol at 144.5°C |
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 |
−24.4 kJ/mol |
Standard molar entropy, S |
247 J/(mol K) |
Enthalpy of combustion, ΔcH |
−4552 kJ/mol |
Heat capacity, cp | 187.0 J/(mol K) at 25°C |
Gas properties | |
Std enthalpy change of formation, ΔfH |
19.0 kJ/mol |
Standard molar entropy, S |
353.6 J/(mol K) |
Heat capacity, cp | 132.5 J/(mol K) at 25°C |
van der Waals' constants[6] | a = 3038 L2 kPa/mol2 b = 0.1755 liter per mole |
Vapor pressure of liquid
P in mm Hg | 1 | 10 | 40 | 100 | 400 | 760 | |
T in °C | −3.8 | 32.1 | 59.5 | 81.3 | 121.7 | 144.4 |
Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.
Distillation data
See also:
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Spectral data
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 |
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References
- Merck Index of Chemicals and Drugs, 9th ed. monograph 9743
- CRC Handbook of Chemistry and Physics, 44th ed. pp 2611–2620
- CRC Handbook of Chemistry and Physics, 44th ed. pp 2244–2248
- Lange's Handbook of Chemistry, 10th ed. pp 1669–1674
- CRC Handbook of Chemistry and Physics, 85th ed. p8-111
- Lange's Handbook of Chemistry, 10th ed, pp 1522–1524
- "Pure Component Properties" (Queriable Database). Chemical Engineering Research Information Center. Retrieved 27 May 2007.
- "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved 27 May 2007.
Except where noted otherwise, data relate to standard ambient temperature and pressure.
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