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'''Mordant''' is a substance used in [[dyeing]] and [[printing]] textiles that changes the chemical structure of the dye, making the color brighter and more permanent. The term "mordant" comes from the French word ''mordre'', meaning "to bite". In the context of dyeing, this refers to the mordant's ability to "bite" into the fabric and hold onto the dye.

== History ==

The use of mordants in dyeing has been practiced for centuries. The earliest known example of mordant dyeing dates back to the [[Neolithic]] period. Archaeologists have found evidence of mordant dyeing on textiles recovered from archaeological sites in Europe and Asia.

== Types of Mordants ==

There are several types of mordants, including:

* [[Alum]]: The most commonly used mordant. Alum is a double sulfate of aluminum and potassium. It is used to create bright, clear colors.

* [[Iron]]: Used to darken colors and create black and gray shades.

* [[Copper]]: Used to create green and teal shades.

* [[Tin]]: Used to brighten colors and create a metallic sheen.

* [[Chrome]]: Used to create bright, clear colors. However, it is toxic and its use is now restricted in many countries.

== Process ==

The process of mordanting involves soaking the fabric in a solution of the mordant and water. The fabric is then dyed. The mordant reacts with the dye, creating a chemical bond that makes the color more vibrant and resistant to washing and fading.

== Environmental Impact ==

The use of mordants has been criticized for its environmental impact. Many mordants are toxic and can contaminate water sources if not disposed of properly. In response to these concerns, some dyers have begun to use natural mordants, such as plant tannins and vinegar.

== See Also ==

* [[Dye]]
* [[Textile industry]]
* [[Environmental impact of the textile industry]]

[[Category:Textile arts]]
[[Category:Dyes]]
[[Category:Chemical substances for use in the textile industry]]

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Mordant - Revision history

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