Properties of sulfur dioxide
Thermophysical properties for sulfur dioxide (CAS: 7446-09-5). Use the selector below to view properties in different unit systems.
Calculation Conditions
The following state-dependent properties were calculated at these standard conditions.
Temperature
25 °C
Pressure
1.01325 bar
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Open CalculatorIdentification
- AtomsO: 2, S: 1
- CAS7446-09-5
- FormulaO2S
- ID7446-09-5
- InChIO2S/c1-3-2
- InChI KeyRAHZWNYVWXNFOC-UHFFFAOYSA-N
- IUPAC Namesulfur dioxide
- Molecular Weight (kg)64.0638
- Phaseg
- PubChem ID1119
- SMILESO=S=O
- Synonyms
Physical Properties
- Acentric factor0.256
- Critical pressure (bar)78.866
- Critical temperature (°C)157.49
- Critical volume (m³/kmol)0.123793
- Dipole moment1.63
- Melting temperature (°C)-72.5
- Normal boiling temperature (°C)-10.013
State-dependent Properties
- Compressibility factor1
- Density (kg/m³)2.61855
- Dynamic viscosity (cP)0.0128585
- Enthalpy of vaporization (mass) (kJ)356.368
- Enthalpy of vaporization (molar) (kJ/kmol)2.2830e+4
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient2.1955e-13
- Kinematic viscosity4.9105e-6
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))39.889
- Molar volume (m³/kmol)24.4654
- Parachor
- Poynting correction factor
- Prandtl number0.741502
- Saturation pressure (bar)3.92147
- Saturation temperature (°C)-10.013
- Solubility parameter
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity2.21079
- Specific heat capacity (kJ/kg·K)0.622644
- Surface tension0.0216547
- Thermal conductivity0.0107973
- Thermal diffusivity6.6224e-6
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-273.15
- Lower flammability limit
- Upper flammability limit0.235
Environmental Properties
- Global warming potential
- Ozone depletion potential
Failed Properties:
- API gravityFailed