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Phosphonates are a class of chelating agents and scale inhibitors with a phosphonic acid group in common. Phosphonates are phosphonic acid organometallic compounds with R being an alkyl or aryl group and CPO(OH) or CPO(OR) groups. Commercially significant chemicals made from phosphonic acids include phosphonates, glyphosate, and the widely used plant growth regulator ethephon. They are used in a variety of products, including personal care items, water treatment additives, and household and industrial cleaning solutions. F... more