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www.fashiongets.com/Indigo_Blue_Dyes
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Indigo is one kind of Vat dyes, insoluble in water,alcohol and ether. It is soluble in benzene anhydride. It is mainly used for dying cotton fabrics, and blue jeans.
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www.fashiongets.com/What_Is_Indigo_Carmine
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Indigo pigment derived from the indigo plant. It must be carefully extracted and it requires optimum condition during treatment ... Why is indigo insoluble in water but indigo carmine is soluble?
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Indigo dye - Wikipedia, the free encyclopedia
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en.wikipedia.org/wiki/Indigo_dye
The precursor to indigo is indican, a colorless, water-soluble derivative of the amino acid tryptophan. Indican readily hydrolyzes to release β-D-glucose and ...
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chemicalland21.com/specialtychem/finechem/INDIGO.htm
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The key functional group in indigo is C6H4(NH)C(O=)C=, called indogen. It is insoluble in water but soluble in hot aniline and hot chloroform. It become water ...
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www.sewanee.edu/Chem/Chem&Art/Detail_Pages/Projects_200...
www.sewanee.edu/Chem/Chem&Art/Detail_Pages/Projects_2000/Leopold/Leopold.html
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Indigo is insoluble in water before dyeing, but it is made soluble in the blue vat. The blue vat is a "vat" of chemicals in which the indigo dyeing takes place.
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www.greatvistachemicals.com/dyes_and_pigments/indigo_dy...
www.greatvistachemicals.com/dyes_and_pigments/indigo_dye.html
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Indigo is a dark blue crystalline powder that melts at 390°–392°C. It is insoluble in water, alcohol, or ether but soluble in chloroform, nitrobenzene, ...
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www.upb.pitt.edu/uploadedFiles/About/Sponsored_Programs...
www.upb.pitt.edu/uploadedFiles/About/Sponsored_Programs/Science_In_Motion/Chemistry_Labs/chem022_To%20Dye%20For%20(2).doc
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Indigo is insoluble in water but is easily reduced by sodium dithionite (sodium hydrosulfite, Na2S2O4) in a strong alkaline solution to produce a water-soluble ...
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www.ncbi.nlm.nih.gov/pubmed/15986207
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Jun 29, 2005 ... An optochemical ozone sensor is described that has been manufactured by immobilisation of novel soluble indigo derivatives in permeable ...
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www.sharonburnston.com/indigo.html
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Fibers immersed in the bath absorb the soluble "indigo white" Then, when they are exposed to the air, the molecule re-oxidizes, turns blue again (it's like magic!) ...
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