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Unformatted text preview: cloth blue. This type of dyeing is called vat dyeing and is used mostly on cotton, wool and other fibers. Because leucoindigo is used commonly in vat dyeing, it is presumptuous that it will also be effective in the dyeing process of the pieces of cloth. There is a slightly different process in preparation involving the indigo carmine. The indigo is reacted with sulfuric acid, which in turn, allows it to be water-soluble. Depending on the concentration it is placed into, the indigo adds two, three, or four sulfuric acid units. Afterwards, a percent yield can then be found using spectrophotometric techniques. One common use for indigo carmine is Blue #2 dye. Indigo disulfonic acid is the expected product because it is the most commonly used form....
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This note was uploaded on 09/22/2008 for the course CHEM 104B taught by Professor Staff during the Spring '07 term at University of Arizona- Tucson.
- Spring '07