Properties of helium-3
Thermophysical properties for helium-3 (CAS: 14762-55-1). 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
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Open CalculatorIdentification
- AtomsHe: 1
- CAS14762-55-1
- Formula[3He]
- ID14762-55-1
- InChIHe/i1-1
- InChI KeySWQJXJOGLNCZEY-BJUDXGSMSA-N
- IUPAC Namehelium-3
- Molecular Weight (kg)4.0026
- Phaseg
- PubChem ID6.8576e+6
- SMILES[3He]
- Synonyms
Physical Properties
- Acentric factor-0.4715
- Critical pressure (bar)1.14497
- Critical temperature (°C)-269.841
- Critical volume (m³/kmol)0.0725
- Dipole moment
- Melting temperature (°C)-273.15
- Normal boiling temperature (°C)-269.95
State-dependent Properties
- API gravity2429
- Compressibility factor1
- Density (kg/m³)0.163603
- Dynamic viscosity (cP)0.010959
- Enthalpy of vaporization (mass) (kJ)0
- Enthalpy of vaporization (molar) (kJ/kmol)
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient4.2132e-13
- Kinematic viscosity6.6986e-5
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))20.7862
- Molar volume (m³/kmol)24.4654
- Parachor
- Poynting correction factor0.714866
- Prandtl number0.0293138
- Saturation pressure (bar)115.784
- Saturation temperature (°C)-269.821
- Solubility parameter
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity0.138126
- Specific heat capacity (kJ/kg·K)5.19316
- Surface tension0
- Thermal conductivity1.94147
- Thermal diffusivity0.00228512
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-273.15
- Lower flammability limit
- Upper flammability limit
Environmental Properties
- Global warming potential
- Ozone depletion potential