C12-18 PEG alkyl ether phosphate C12-18 alkyl PEG ether phosphate Ethylene oxide polymer, alkyl(C12-18) adduct, phosphate ester PEG alkyl(C12-18) ether phosphate Peg alkyl ether phosphate, C12-18 alpha-Alkyl(C12-18)-omega-hydroxypoly(oxyethylene)(3.3-3.7 moles) polymer (avg MW 380), phosphate