| http://www.w3.org/ns/prov#value | - M is preferably an alkali metal such as sodium or potassium, more preferably sodium.Nonionic SurfactantsNonionic surfactants for use in the present invention include but are not limited to linear copolymers, block copolymers, and reverse copolymers of ethylene oxide/propylene oxide; ethoxylated fatty acids of polyethylene glycol/polypropyleneglycol; fatty acid esters; glycerol esters; ethoxylate
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