Phosphonates
2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTC)
Amino Trimethylene Phosphonic Acid (ATMP)
Diethylenetriamine Penta (Methylene Phosphonic Acid) (DTMPA)
Hydroxyethylidene Diphosphonic Acid (HEDP)
Polyamino Polyether Methylene Phosphonic Acid (PAPEMP)