Properties of methanethiol
Thermophysical properties for methanethiol (CAS: 74-93-1). 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
Need properties at a different state? Use our interactive calculator.
Open CalculatorIdentification
- AtomsC: 1, H: 4, S: 1
- CAS74-93-1
- FormulaCH4S
- ID74-93-1
- InChICH4S/c1-2/h2H,1H3
- InChI KeyLSDPWZHWYPCBBB-UHFFFAOYSA-N
- IUPAC Namemethanethiol
- Molecular Weight (kg)48.1075
- Phaseg
- PubChem ID878
- SMILESCS
- Synonyms
Physical Properties
- Acentric factor0.1488
- Critical pressure (bar)72.3
- Critical temperature (°C)196.85
- Critical volume (m³/kmol)0.147
- Dipole moment1.52
- Melting temperature (°C)-122
- Normal boiling temperature (°C)6
State-dependent Properties
- API gravity30.0869
- Compressibility factor1
- Density (kg/m³)1.96635
- Dynamic viscosity (cP)0.00950318
- Enthalpy of vaporization (mass) (kJ)491.343
- Enthalpy of vaporization (molar) (kJ/kmol)2.3637e+4
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient1.7409e-13
- Kinematic viscosity4.8329e-6
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))50.3046
- Molar volume (m³/kmol)24.4654
- Parachor2.1977e-5
- Poynting correction factor0.997734
- Prandtl number0.72332
- Saturation pressure (bar)2.02099
- Saturation temperature (°C)5.95495
- Solubility parameter1.9472e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity1.66015
- Specific heat capacity (kJ/kg·K)1.04567
- Surface tension0.023837
- Thermal conductivity0.0137383
- Thermal diffusivity6.6816e-6
Safety Properties
- Autoignition temperature (°C)340
- Flash point temperature (°C)-18
- Lower flammability limit0.041
- Upper flammability limit0.21
Environmental Properties
- Global warming potential
- Ozone depletion potential