作者: Poonam Singh , Leela Iyengar , Anjali Pandey
DOI: 10.1007/978-3-642-23789-8_4
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摘要: Color has always been a part of human life since long. All colorants, until the middle nineteenth century, were natural origin. Manufacturing synthetic dyes started in 1856 and first compound to be synthesized was aniline purple. By beginning twenteeth almost completely replaced compounds. Synthetic represent an important class industrial chemicals, which are used extensively textile, leather tanning, paper production, food technology, agriculture, light harvesting array, coloring pharmaceuticals