| http://www.w3.org/ns/prov#value | - Suitable soaps are the alkali metal salts, alkaline earth metal salts or unsubstituted or substituted ammonium salts or higher fatty acids (C10 -C22), e.g. the sodium or potassium salts of oleic or stearic acid, or of natural fatty acid mixtures which can be obtained e.g. from coconut oil or tallow oil.
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