Hydrazides of amino-polyacetic acids as chelants

Details Hydrazides of amino-polyacetic acids as chelants Hydrazides of amino-polyacetic acids as chelants

C - Chemistry, Metallurgy

02

F

260/522.3, 260/5

C02F 5/12 (2006.01) C07C 243/34 (2006.01)

Patent

CA 1253168

ABSTRACT OF THE DISCLOSURE Amino-polyacetic acids such as ethylenediaminetetra- acetic acid, diethylene triaminepentaacetic acid and nitrilo- triacetic acid are reacted with alkanols and then with hydra- zine to form the hydrazides which may be converted to carboxy- hydrazides, i.e. carbazic acids. The products perform well as chelants and sequestering agents.

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