| http://www.w3.org/ns/prov#value | - Examples of surfactants disclosed in the above texts include the alkali metal soaps of long chain fatty acids. and especially the sodium and potassium soaps of fatty acids containing about 14-25 carbon atoms and preferably about l6-l8 carbon atoms. and the sodium and potassium soaps of the rosin acids. abietic acid and the derivatives thereof.
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