Dyeing a Fabric Using Indigo Dye and Vat Dyeing Techniques (1394 words, 5 pages)
Indigo Vat DyeingPurposeTo dye fabric using a common dye, indigo, and vat dyeing techniques.BackgroundIndigo is insoluble in water but is easily reduced by sodium dithionite (sodium hydrosulfite, Na2S204) in a strong alkaline solution to produce a water-soluble leucoindigo. This leuco base is strongly attracted to cellulose. After the reduced dye ...
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