25338-58-3 26-(Octylphenoxy)-3,6,9,12,15,18,21,24-octaoxahexacosanoic acid 3,6,9,12,15,18,21,24-Octaoxahexacosanoic acid, 26-(octylphenoxy)- EINECS 246-867-0 Octoxynol-9 carboxylic acid PEG-9 Octyl phenyl ether carboxylic acid Polyethylene glycol 450 octyl phenyl ether carboxylic acid Polyoxyethylene (9) octyl phenyl ether carboxylic acid