Properties of propyne
Thermophysical properties for propyne (CAS: 74-99-7). 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
- AtomsC: 3, H: 4
- CAS74-99-7
- FormulaC3H4
- ID74-99-7
- InChIC3H4/c1-3-2/h1H,2H3
- InChI KeyMWWATHDPGQKSAR-UHFFFAOYSA-N
- IUPAC Nameprop-1-yne
- Molecular Weight (kg)40.0639
- Phaseg
- PubChem ID6335
- SMILESCC#C
- Synonyms
Physical Properties
- Acentric factor0.204
- Critical pressure (bar)56.26
- Critical temperature (°C)129.23
- Critical volume (m³/kmol)0.163577
- Dipole moment0.78
- Melting temperature (°C)-102.7
- Normal boiling temperature (°C)-23.2
State-dependent Properties
- Compressibility factor1
- Density (kg/m³)1.63757
- Dynamic viscosity (cP)0.00879222
- Enthalpy of vaporization (mass) (kJ)465.64
- Enthalpy of vaporization (molar) (kJ/kmol)1.8655e+4
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient1.4437e-13
- Kinematic viscosity5.3691e-6
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))60.6614
- Molar volume (m³/kmol)24.4654
- Parachor
- Poynting correction factor
- Prandtl number0.743562
- Saturation pressure (bar)5.82463
- Saturation temperature (°C)-25.312
- Solubility parameter
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity1.38257
- Specific heat capacity (kJ/kg·K)1.51412
- Surface tension0.0113919
- Thermal conductivity0.0179036
- Thermal diffusivity7.2207e-6
Safety Properties
- Autoignition temperature (°C)340
- Flash point temperature (°C)-273.15
- Lower flammability limit0.017
- Upper flammability limit0.168
Environmental Properties
- Global warming potential
- Ozone depletion potential
Failed Properties:
- API gravityFailed