Heat storage material composition and heat storage apparatus

Abstract

Provided is a heat storage material composition that is less likely to vaporize and has a sufficiently stabilized supercooled state. A heat storage material composition according to an aspect of the present disclosure includes sodium acetate, water, and an alcohol. The alcohol includes at least one selected from the group consisting of 1,2-butanediol and a dihydric alcohol having 5 or 6 carbon atoms. The dihydric alcohol is for example a straight-chain alcohol. For example, two hydroxy groups contained in the dihydric alcohol are each bonded to a different one of a carbon atom at a 1-position and a carbon atom at a 2-position contained in the dihydric alcohol. The alcohol includes for example at least one selected from the group consisting of 1,2-butanediol, 1,2-pentanediol, and 1,2-hexanediol.

Dependencies are inferred from the claim text.