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Colour Index (CI)

The colour index (CI) number, developed by the Society of Dyers and Colorists, is used for dye classification. Once the chemical structure of a dye is known, a five-digit CI number assigned to it. The first word is the dye classification and other shade or hue of the dye. Such as CI Acid Yellow 36 (CI 13065) is a yellow dye of the acid type.

Furthermore, a dye mixture can include several dyes such as Navy 106 is composed of three reactive azo dyes: Remazol Red RB, Remazol Black B, and Remazol Golden Yellow 3. The society of colourist and dyers categorise substance and data supplied by various manufacturers. See Textile fabric dye overview

Criteria

  • Substance form
  • Data from manufacturers
  • Category of use by branches
  • Main application (the type of fibres or fabric in case of textiles, and other industries depending on materials for example steel, paper)
  • The product status (of which withdrawn from production or other issues related environment etc.)
  • Hue Indication Chart (map)

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Sources and useful Information

  • Society of Dyers and Colourists (Great Britain) and the American Association of Textile Chemists and Colorists, which includes periodic additions and amendments.
  • Encyclopedic Dictionary of Polymers. Published 2007 by Springer Science+Business Media, LLC.

ECO-FASHION ENCYCLOPEDIA

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