33939-65-0 68214-95-9 Cetyloxypoly(ethyleneoxy)acetic acid, sodium salt PEG-13 Cetyl ether carboxylic acid, sodium salt Poly(oxy-1,2-ethanediyl), alpha-(carboxymethyl)-omega-(hexadecyloxy)-, sodium salt Polyethylene glycol (13) cetyl ether carboxylic acid, sodium salt Polyoxyethylene (13) cetyl ether carboxylic acid, sodium salt Sodium ceteth-13 carboxylate alpha-(Carboxymethyl)-omega-(hexadecyloxy)poly(oxy-1,2-ethanediyl), sodium salt