Indigo
Sample pages
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Two pages from the 11th edition of Encyclopedia Britannica covering the end of the article on indigo. They describe processing of the natural indigo mud (mal) and the composition of natural indigoes, along with British import values of natural and synthetic indigo for 1899-1908. The rest is the chemistry of indigotine: the work of Baeyer and Heumann, the industrial synthesis from naphthalene, its properties, indigo white and indigo carmine, halogen derivatives, Tyrian purple as a dibromindigo, and thioindigo dyes.
- Type
- Article
- Date
- 1911
- Language
- English
- Pages
- 2
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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