On the Use of Oxides or Calces of Iron in Dying Cotton
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An 1799 article by J. A. Chaptal, translated from the Annales de Chimie, on using iron oxides to dye cotton. It describes how cotton takes up iron from solutions in various acids to give buff, ochre and rust colours, and Chaptal's method of soaking in green vitriol, then potash and alum, for a softer, durable yellow. It also covers combining iron with madder for violet and purple on cotton prepared for Turkey red, using astringents and galls to obtain browns, greys and blacks, and why galls cannot be replaced by sumach or bark on cotton.
- Type
- Article
- Date
- 1799
- Language
- English
- Pages
- 11
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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