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Lac
In India, lac, lacquer or shellac products have been used from as early as about 1200 B.C as plastic and decorative materials. During the 17th century, after traders had introduced lac dye and, later, shellac to Europe, lac became commercially important there. The word lac is the English version of Persian and Hindi words that mean “hundred thousand,” indicating the large number of the minute insects required to produce lac. In fact, about 17,000 to 90,000 insects are needed to produce one pound of shellac. The maximum yield of resin and dye is obtained by gathering stick lac (i.e., the twigs with their living inhabitants) in June and November. Lac dye is obtained from ground stick lac by extraction with hot water or hot sodium carbonate solution. More...
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