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EPA. US Environmental Protection Agency.

Emergency temperature. Emergency temperature means the temperature at which emergency procedures should be implemented

Evaporation. The process by which a liquid is changed into the vapor state.
Evaporation rate. The ratio of the time required to evaporate a measured volume of a liquid to the time required to evaporate the same volume of a reference liquid (butyl acetate, ethyl ether) under ideal test conditions. The higher the ratio, the slower the evaporation rate. The evaporation rate can be useful in evaluating the health and fire hazards of a material.