aluminum soap

aluminum soap
: any of various aluminum salts of higher carboxylic acids (as fatty acids) including aluminum stearate and aluminum resinate that are amorphous solids insoluble in water but soluble in hydrocarbon solvents and that are used chiefly in lubricating greases, in protective coatings, and in waterproofing compositions

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any of the salts formed by higher carboxylic acids and aluminum, as aluminum oleate, aluminum palmitate, and aluminum stearate.

Useful english dictionary. 2012.

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