Protein foam fire-extinguishing chemical and an aqueous foam solution

摘要

According to the present invention, there can be provided a protein foam fire-extinguishing chemical having foaming properties making it usable as a foam fire-extinguishing chemical even diluted at a concentration of 2% by volume or less. In the protein foam fire-extinguishing chemical according to the present invention, the protein hydrolyzates are contained in an amount of 25 to 40% by weight in terms of the solid content thereof, and one or more members selected from the group consisting of 2-methyl-2,4-pentanediol, 3-methyl-3-methoxy butanol, diethylene glycol monobutyl ether and diethylene glycol monoisopropyl ether are contained as the foaming assistant in an amount of 8 to 20% by weight.