note the similarity of the structural formula of this compound to NTA discussed earlier in this chapter.
the uses of phophonate chelating agents are increasing steadily for application that include inhibition of scale and corrosion, metal finishing, cleaning and laundry agents,ore recovery,and tion.in part because of the difficulty in determining low levels of these substances in water,their environmental chemistry is not very well known. Although they are not very biodegradable,they interact strongly with surfaces and are removed with the sludge from biological waste treatment