Properties of formic acid
Thermophysical properties for formic acid (CAS: 64-18-6). 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: 1, H: 2, O: 2
- CAS64-18-6
- FormulaCH2O2
- ID64-18-6
- InChICH2O2/c2-1-3/h1H,(H,2,3)
- InChI KeyBDAGIHXWWSANSR-UHFFFAOYSA-N
- IUPAC Namemethanoic acid
- Molecular Weight (kg)46.0254
- Phasel
- PubChem ID284
- SMILESC(=O)O
- Synonyms
Physical Properties
- Acentric factor0.3222
- Critical pressure (bar)58.1
- Critical temperature (°C)314.85
- Critical volume (m³/kmol)0.1159
- Dipole moment1.41
- Melting temperature (°C)8.3
- Normal boiling temperature (°C)101
State-dependent Properties
- API gravity-16.1184
- Compressibility factor0.00154998
- Density (kg/m³)1213.72
- Dynamic viscosity (cP)1.61156
- Enthalpy of vaporization (mass) (kJ)433.509
- Enthalpy of vaporization (molar) (kJ/kmol)1.9952e+4
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient-4.3723e-7
- Kinematic viscosity1.3278e-6
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))60.7335
- Molar volume (m³/kmol)0.0379209
- Parachor1.6716e-5
- Poynting correction factor1.00146
- Prandtl number8.08921
- Saturation pressure (bar)0.0573309
- Saturation temperature (°C)100.886
- Solubility parameter2.1466e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity1.21492
- Specific heat capacity (kJ/kg·K)1.31957
- Surface tension0.0375281
- Thermal conductivity0.262888
- Thermal diffusivity1.6414e-7
Safety Properties
- Autoignition temperature (°C)525
- Flash point temperature (°C)42
- Lower flammability limit0.18
- Upper flammability limit0.57
Environmental Properties
- Global warming potential
- Ozone depletion potential