Properties of 2-pentyne
Thermophysical properties for 2-pentyne (CAS: 627-21-4). 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: 5, H: 8
- CAS627-21-4
- FormulaC5H8
- ID627-21-4
- InChIC5H8/c1-3-5-4-2/h3H2,1-2H3
- InChI KeyNKTDTMONXHODTI-UHFFFAOYSA-N
- IUPAC Namepent-2-yne
- Molecular Weight (kg)68.117
- Phasel
- PubChem ID1.2310e+4
- SMILESCCC#CC
- Synonyms
Physical Properties
- Acentric factor0.175
- Critical pressure (bar)40.3
- Critical temperature (°C)245.85
- Critical volume (m³/kmol)0.276
- Dipole moment
- Melting temperature (°C)-109
- Normal boiling temperature (°C)56
State-dependent Properties
- API gravity66.1129
- Compressibility factor0.00394611
- Density (kg/m³)705.561
- Dynamic viscosity (cP)0.235682
- Enthalpy of vaporization (mass) (kJ)443.808
- Enthalpy of vaporization (molar) (kJ/kmol)3.0231e+4
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient-4.0400e-7
- Kinematic viscosity3.3403e-7
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))133.556
- Molar volume (m³/kmol)0.0965431
- Parachor3.6989e-5
- Poynting correction factor1.00269
- Prandtl number3.69202
- Saturation pressure (bar)0.323987
- Saturation temperature (°C)56.1331
- Solubility parameter1.6955e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity0.706255
- Specific heat capacity (kJ/kg·K)1.96069
- Surface tension0.0212105
- Thermal conductivity0.125161
- Thermal diffusivity9.0475e-8
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-30.15
- Lower flammability limit0.0160256
- Upper flammability limit0.101981
Environmental Properties
- Global warming potential
- Ozone depletion potential