Abstract The composition of a multicomponent pool fire will vary over the course of burning due to preferential distillation of more volatile compounds. As a result, key fire properties like the burning rate, flame temperature, flame height, and soot emissions will change as the properties of the fuel change. This adds uncertainty about the combustion properties of the fire, especially for fuel blends with widely varying boiling points (e.g., gasoline-ethanol). The heat release rate, which is proportional to the burning rate, is essential for estimating the radiative flux to nearby structures or personnel, so understanding how fire dynamics are impacted by the composition of a fuel mixture is a pre-requisite for dealing with hazard assessments of fire scenarios involving multicomponent fuels. Continuously fed pool fire experiments were conducted in a 0.30 m diameter pan with binary mixtures of ethanol-water, ethanol-isopropanol, and ethanol-hexane. The relationship between burning rate and fuel composition was strongly dependent on vapour-liquid equilibria and relative volatility of the mixture. It was found that burning rate models dependent on fuel properties gave better predictions of the relationship between burning rate and fuel composition. Heskestad’s flame height and flame temperature correlations were found to be suitable for use in multicomponent pool fire scenarios.