| http://www.w3.org/ns/prov#value | - Among these classes of dyes, the azo dyes which are characterized by aromatic moieties linked together by azo bond (-N = N-) chromophores are the most important chemical classes of synthetic dyes and pigments, representing between 60% and 80% of the organic dyes used in industries such as textile, leather, plastic, cosmostic and food industries (Vandevivere, et al., 1998).
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