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This page provides supplementary chemical data on dimethyl sulfoxide.
Contents |
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 SIRI, and follow its directions. MSDS is available at Mallinckrodt Baker.
Structure and properties
| Structure and properties | |
|---|---|
| Index of refraction[1], nD | 1.4795 at 20°C 1.4787 at 21°C |
| Abbe number | ? |
| Dielectric constant,[2] εr | 48 ε0 at 20 °C |
| Bond strength | ? |
| Bond length | ? |
| Bond angle | ? |
| Magnetic susceptibility | ? |
| Surface tension[2] | 43 dyn/cm at 20°C |
| Viscosity | 2.14 mPa·s[2] at 20°C 1.1 mP·s[1] at 27°C |
Thermodynamic properties
| Phase behavior | |
|---|---|
| Triple point | 291.67 K (18.52 °C), ? Pa |
| Critical point[2] | 720 K (447 °C), 5630 kPa |
| Std enthalpy change of fusion, ΔfusH |
14.37 kJ/mol |
| Std entropy change of fusion, ΔfusS |
49.26 J/(mol·K) |
| Std enthalpy change of vaporization, ΔvapH |
52.9 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 |
–203.4 kJ/mol |
| Standard molar entropy, S |
188.78 J/(mol K) |
| Enthalpy of combustion, ΔcH |
–2037.3 kJ/mol |
| Heat capacity, cp | 153 J/(mol K) at 25°C |
| Gas properties | |
| Std enthalpy change of formation, ΔfH |
–150.5 kJ/mol |
| Standard molar entropy, S |
? J/(mol K) |
| Heat capacity, cp | ? J/(mol K) |
Vapor pressure of liquid
vapor pressure at 20°C = 0.0556 mbar = 0.0417 mmHg[2]
obtained from CHERICDistillation data
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Spectral data
| UV-Vis | |
|---|---|
| λmax | ? nm |
| Extinction coefficient, ε | ? |
| IR | |
| Sectrum | NIST |
| Major absorption bands | 3000, 2900, 1200-1240, 1000-1080, 960, 690 cm−1 |
| NMR | |
| Proton NMR | |
| Carbon-13 NMR | |
| Other NMR data | |
| MS | |
| Masses of main fragments |
|
References
- ^ a b Merck Index of Chemicals and Drugs, 9th ed. monograph 3249
- ^ a b c d e "Dimethyl Sulfoxide (DMSO) -- Technical". Atofina Chemicals, inc. Retrieved on 26 May 2007.
- ^ "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved on 26 May 2007.
- ^ a b "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved on 26 May 2007.
Except where noted otherwise, data relate to standard ambient temperature and pressure.
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Wikipedia content modification information:
- This page was last modified on 28 May 2007, at 04:13.
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