| http://www.w3.org/ns/prov#value | - As representative of the anionic surfactant, alkali metal salts of C8 -C22 aliphatic surfactants such as sodium dodecyl sulfate or sulfonate, alkali metal salts of alkyl aromatic sulfonates or sulfates, and ethoxylated derivatives of the above, such as the alkylphenyl ethoxylated phosphate esters, may be used.
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