Methanol - Thermophysical Properties

Comprehensive thermophysical properties calculator for Methanol (CH3OH). Calculate density, heat capacity, viscosity, thermal conductivity, and other critical thermodynamic properties at standard conditions (25°C, 1 bar) or custom temperature/pressure values.

Calculator

Inputs

Temperature (°C)

Pressure (bar)

Results

Density (Liquid)-- kg/m³

Specific Heat Capacity (Liquid)-- kJ/kg K

Boiling Point-- °C

Critical Temperature-- °C

Critical Pressure-- MPa

Dynamic Viscosity-- cP

Surface Tension-- N/m

Thermal Conductivity-- W/m°C

Property	Value	Unit
Molecular Weight	32.042	g/mol
Boiling Point	64.7	°C
Melting Point	-97.6	°C
Critical Temperature	240.2	°C
Critical Pressure	8.22	MPa
Critical Density	281	kg/m³
Density (Liquid)	786.3	kg/m³
Density (Gas) @ 0.17 bar	0.220	kg/m³
Specific Gravity (Liquid)	0.79	relative to water
Specific Gravity (Gas)	1.11	relative to air
Heat of Evaporation	1165	kJ/kg
Heat of Combustion (Liquid)	-22689	kJ/kg
Heat of Formation (Liquid)	-7459	kJ/kg
Specific Heat Capacity Cp (Liquid)	2.53	kJ/kg K
Specific Heat Capacity Cv (Liquid)	2.12	kJ/kg K
Specific Heat Ratio (Liquid)	1.20	cp/cv
Dynamic Viscosity	0.544	cP
Kinematic Viscosity	0.692	cSt
Thermal Conductivity	0.202	W/m°C
Surface Tension	0.02207	N/m
Vapor Pressure	0.0169	MPa
Sound Velocity (Liquid)	1100	m/s
Specific Volume (Liquid)	0.00127	m³/kg
Ionization Potential	10.84	eV
Flash Point	11	°C
Autoignition Temperature	464	°C
Solubility in Water	1000	mg/ml (Miscible)

Safety & Applications

Safety Hazards

Toxicity: Methanol is toxic and may cause blindness
Flammability: Gas and liquid are flammable
Flash Point: 11°C (52°F)
Autoignition Temperature: 464°C (867°F)
Vapor Hazard: Vapors are slightly heavier than air and may explode if ignited

Applications

Production of chemicals
Water removal from automotive and aviation fuels
Solvent for paints and plastics
Ingredient in various industrial products

Phase Behavior

Methanol is a liquid at standard conditions. At the critical point (240.2°C, 8.22 MPa), there is no change of state when pressure is increased or heat is added. The triple point occurs at -97.7°C and 1.86 × 10⁻⁶ bar, where all three phases coexist in thermodynamic equilibrium.