| http://www.w3.org/ns/prov#value | - These surfactants consist of natural surfactants such as saponin, nonionic surfactants such as alkylene oxide-, glycerin- and glycidol-based compounds, cationic surfactants such as higher alkylamines, quaternary ammonium salts, pyridine and other heterocyclic compounds, phosphoniums or sulfoniums, anionic surfactants containing carboxylic acid, sulfonic acid, phosphoric acid, acidic groups such as
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