| http://www.w3.org/ns/prov#value | - Examples of surfactant are nonionic surfactant, for example, polyoxyethylene alkylether group such as polyoxyehtylene laurylether, polyoxyethylene stearylether, polyoxyethylene cetylether, polyoxyethylene oleylether and the like, polyoxyethylene alkylallylether group such as polyoxyethylene octylphenolether, polyoxyethylene nonylphenolether and the like, polyoxyethylene???polyoxypropylene block co
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