Abstract
Although one of the dyes of antiquity, the deep blue indigo is still used as vat dye. Structural modifications have made accessible a broad assortment of dyestuffs giving orange, red, blue or bluish-black shades on cellulosic fibres, silk and wool [31, 245, 246]. Indigo dyes are, in general, characterized by high melting points and low solubility in organic solvents. They can be reduced to dihydro derivatives (leuco form). Some indigo dyes display photochromic properties [569].
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© 1980 Springer-Verlag Berlin Heidelberg
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Fabian, J., Hartmann, H. (1980). Indigoid Dyes. In: Light Absorption of Organic Colorants. Reactivity and Structure: Concepts in Organic Chemistry, vol 12. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67587-4_10
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DOI: https://doi.org/10.1007/978-3-642-67587-4_10
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-67589-8
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