Synonyms: Phosphonic acid, P,P'-(iminobis(methylene))bis-, N-coco alkyl derivs., sodium salts;Coco alkyliminobis(methylphosphonic acid), sodium salt;Phosphonic acid, (iminobis(methylene))bis-, N-coco alkyl derivs, sodium salts;Phosphonic acid, (iminobis(methylene))bis-, N-coco alkyl derivs., sodium salts;tetrasodium (iminodimethanediyl)bis(phosphonate)