The present invention provides a composition for polyurethane foam, which is obtained by blending a polyol composed of a polyester polyol and a polyether polyol, tolylene diisocyanate, a foaming agentand a foam stabilizer, and which is characterized in that: the polyester polyol contains a phthalate ester polyol; and the mass composition ratio of the tolylene diisocyanate, namely (2, 4-tolylene diisocyanate)/(2, 6-tolylene diisocyanate) is from 65/35 to 70/30. This composition for polyurethane foam enables a polyurethane foam to have enhanced tensile strength and elastic recoverability, whileensuring low air permeability and excellent toner sealability.