Soap scum, also called lime soap, is the white solid made up of calcium stearate, magnesium stearate and similar alkaline-earth-metal fatty-acid compounds that forms when ordinary soap or other anionic surfactants are used in hard water containing calcium and magnesium ions. Those mineral ions react with the soap's surfactant anion, replacing its sodium and producing insoluble calcium stearate and related deposits that build up on fabrics, sinks and washing machines. Modern synthetic detergents formulated with water-softening builder additives are far more resistant to this hard-water buildup than traditional soap.
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1. Wikipedia, Soap scum
Introduction, GICS sector classification
Soap scum or lime soap is the white solid composed of calcium stearate, magnesium stearate, and similar alkaline earth metal derivatives of fatty acids.
Introduction, offering kind classification
Soap scum or lime soap is the white solid composed of calcium stearate, magnesium stearate, and similar alkaline earth metal derivatives of fatty acids.
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