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"Color index number" redirects here. For color index in astronomy, see Color index. For Color index in geology, see Color index (geology).
Colour Index International
Company type
Incentive Corporation Limited
Predecessor
Colour Index Entertainment Group Corporation (1911–1983)
Founded
1925 United States
Headquarters
United States
Area served
Worldwide
Colour Index International (CII) is a reference database jointly maintained by the Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists.[1] It currently contains over 27,000 individual products listed under 13,000 Colour Index Generic Names.[2] It was first printed in 1925 but is now published solely on the World Wide Web. The index serves as a common reference database of manufactured colour products and is used by manufacturers and consumers, such as artists and decorators.
Colorants (both dyes and pigments) are listed using a dual classification which use the Colour Index Generic Name (the prime identifier) and Colour Index Constitution Numbers. These numbers are prefixed with C.I. or CI, for example, C.I. Acid Orange 7 or C.I. 15510. (This abbreviation is sometimes mistakenly thought to be CL, due to the font used to display it.) The generic name lists first the class of dye (acid dye, disperse dye, etc.), then its hue (e.g., orange), followed by a number assigned by the Colour Index, in chronological order (e.g., Acid Orange 5, Acid Orange 6, Acid Orange 7).[3]
A detailed record of products available on the market is presented under each Colour Index reference. For each product name, Colour Index International lists the manufacturer, physical form, and principal uses, with comments supplied by the manufacturer to guide prospective customers.
For manufacturers and consumers, the availability of a standard classification system for pigments is helpful because it resolves conflicting historic, proprietary, and generic names that have been applied to colours.
^"American Association of Textile Chemists and Colorists". Colour Index International. Retrieved 8 August 2015.
^"About (Colour Index International)". Colour index international. Retrieved 8 August 2015.
^"Colour Index™ Generic Name (CIGN): Definition of a Colour Index™ Generic Name". Colour Index. Retrieved 2024-02-23.
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a mixed-metal oxide. Bismuth vanadate is also known under the ColourIndexInternational as C.I. Pigment Yellow 184. It occurs naturally as the rare minerals...
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the name PY-43 (Pigment yellow 43) on the label, following the ColourIndexInternational system. Limonite, a mineraloid containing iron hydroxide, is the...
photographer and physics and engineering student had already worked on colour photography before he joined C.K. Mees and other former Wratten and Wainright...
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