Toyota Jidosha Kabushiki Kaisha

Nof Corporation

Norihiro Sugaya

Hirotsune Watanabe

Munehiro Yamada

Shogo Izumi

Hiroyuki Komiya

A surfactant composition for a foamed sand including 80 to 99.8 mass % of a compound (A) represented by formula (1); 0.1 to 10 mass % of a compound (B) represented by formula (2); and 0.1 to 10 mass % of an amphoteric surfactant (C):RO-(EO)—SOM  (1)wherein Rrepresents a hydrocarbon group having 6 to 22 carbons, EO represents oxyethylene group, n is 1 to 10, and Mrepresents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium;RO—SOM  (2)wherein Rrepresents a hydrocarbon group having 6 to 22 carbons, and Mrepresents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium.

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Amagasaki, Japan

Norihiro Sugaya