take two pieces of White cloth / old white handkerchief cloth and Neil / Indigo for a minute and hang it for drawing observe the colour of both the colour pieces (i)what do you see (ii)explain why this happens (iii)find out the purpose of using Indigo in textile industry
Answers
Explanation:
Indigo is supposed to have poor washing fastness, fair light fastness, good perspiration fastness and poor crocking fastness. In natural form, indigo dyestuff has a Indigo was originally considered to have medicinal properties, and was popular cosmetic uses and for tattooing. Once discovered by European explorers, demand for indigo spread rapidly. In the early seventeenth century CE, the French started the West Indies indigo industry- on the islands of what is now Haiti. of blue but after reduced to leuco form, the The raw materials used in the natural production of indigo are leaves from a variety of plant species including indigo, woad, and polygonum. Only the leaves are used since they contain the greatest concentration of dye molecules. of the solution turns to yellow
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Answer:
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