2-(2,5-Dichlorophenoxy)propionic acid 6965-71-5 EINECS 230-170-3 NSC 63350 Propanoic acid, 2-(2,5-dichlorophenoxy)- (9CI) Propionic acid, 2-(2,5-dichlorophenoxy)- alpha-(2,5-Dichlorophenoxy)propionic acid