ATMP or aminotris(methylenephosphonic acid) is a phosphonic acid with chemical formula N(CH2PO3H2)3. It is a colorless solid. Its conjugate bases, such as [N(CH2PO3H)3]3-, have chelating properties.
ATMP can be synthesized from the Mannich-type reaction of ammonia, formaldehyde, and phosphorous acid, in a manner similar to the Kabachnik–Fields reaction.
Properties ATMP has good antiscale performance. It is related structurally to nitrilotriacetic acid.
Applications Detergents and cleaning agents Fouling Inhibition Water treatment
Related compounds (1-Aminoethylidene)bisphosphonic acid, , also a chelating agent Etidronic acid, , also a chelating agent Glyphosate, , a herbicide
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