Ethylenediaminetetraacetic acid, widely abbreviated as EDTA (for other names, see Table) is a polyamino carboxylic acid and a colourless, water-soluble solid. In industry, EDTA is mainly used to sequester metal ions in aqueous solution. In the textile industry, it prevents metal ion impurities from modifying colours of dyed products, from catalyzing the disproportionation of hydrogen peroxide, which is used in "chlorine-free bleaching." In similar manner, EDTA is added to some food as a preservative or stabilizer to prevent catalytic oxidative decoloration
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