Properties of Isopropyl Alcohol (C3H8O)

Isopropyl alcohol, also known as isopropanol, is a common and widely used chemical compound with the formula C3H8O. It is a colorless, flammable liquid with a strong odor. Isopropyl alcohol is commonly used as a disinfectant, antiseptic, and cleaning agent due to its ability to kill bacteria and viruses, making it valuable for sanitizing surfaces and skin.

The following table provides a comprehensive list of isopropyl alcohol properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).

Click on the icon to switch between Metric and Imperial units.

Table of Isopropyl Alcohol Properties
Physical Properties
Metric
Molar Mass60.096 g/mol
Density786 kg/m3
Dynamic Viscosity2.5 mPa·s
Surface Tension21.79 mN/m
Thermal PropertiesMetric
Melting Point-87.9 °C
Boiling Point82 °C
Thermal Conductivity0.1378 W/m·K
Specific Heat Capacity (Cp)2995 J/kg·K
Coefficient of Thermal Expansion (αV)1.55×10-3 1/°C
Vapor Pressure4.4 kPa
Critical ConstantsMetric
Critical Temperature (Tc)235 °C
Critical Pressure (Pc)4.76 MPa
Critical Molar Volume (Vc)220 cm3/mol
Electrical PropertiesMetric
Relative Permittivity (εr)20.18
Optical PropertiesMetric
Refractive Index (589 nm)1.377
Hazardous DataMetric
Flash Point12 °C
Autoignition Temperature399 °C
Lower Flammability Limit2%
Upper Flammability Limit12.7%
NFPA Rating (Health)1
NFPA Rating (Fire)3
NFPA Rating (Reactivity)0

Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)

References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Fire Protection Guide to Hazardous Materials, 14th Edition. United States: National Fire Protection Association, 2010.