Lion Corporation

Yuki Nishiyama

Kensuke Itakura

Masahiko Matsubara

Kenji Morimura

Daisuke Negishi

The invention provides a fatty acid alkyl ester sulfonate metal salt mixture of (a) a fatty acid alkyl ester sulfonate metal salt having an endothermic peak area at 50 to 130&#xb0; C. of less than 50% relative to the whole endothermic peak area at 0 to 130&#xb0; C. as measured on a differential scanning calorimeter, and (b) a fatty acid alkyl ester sulfonate metal salt having an endothermic peak area at 50 to 130&#xb0; C. of 50% or more relative to the whole endothermic peak area at 0 to 130&#xb0; C. as measured on a differential scanning calorimeter, with a ratio of (a) to (b) by mass of 95/5 or less. The mixture of the invention is excellent in anti-caking properties.

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Tokyo, Japan

Yuki Nishiyama