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Ethylenediaminetetraacetic acid, widely abbreviated as EDTA (for other names, see Table), is an aminopolycarboxylic acid and a colourless, water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate.
E 1487 (OTTO) Ethylenediaminetetraacetic acid, GR 99%+ Cas 60-00-4 - used as a sequestering agent to improve their stability in air.