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fatty-acid soap

1. n. [Drilling Fluids]

A salt formed when a fatty acid reacts with a metal oxide or hydroxide. Fatty acids and lime, Ca(OH)2, form emulsifiers for oil muds. Fatty acids reacted with sodium hydroxide [NaOH] or potassium hydroxide [KOH] are laundry soaps, some used as foamers for air drilling. Fatty acids and aluminum hydroxide form soaps used as greases and as defoamer chemicals.

See: aluminum stearatecalcium hydroxidecalcium oxidecolloidemulsifierfatty acidgreasing outinvert-emulsion oil mudlow-colloid oil mudlubricantneutralizationoil mudoil-mud emulsifiersoapwater-mud emulsifier

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