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Dyeing Pigments for sale at a market in Goa, India Cotton being dyed manually in contemporary India Silk dye in pan on stove. Khotan. Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness.
Iron mordants "sadden" colors, while alum and tin mordants brighten colors. Iron, chrome and tin mordants contribute to fabric deterioration, referred to as "dye rot". Additional modifiers may be used during or after dying to protect fibre structure, shift pH to achieve different color results, or for any number of other desirably outcomes.
Dyeing is effected by heating the fabric in a solution of an organic compound, typically a nitrophenol derivative, and sulfide or polysulfide. The organic compound reacts with the sulfide source to form dark colors that adhere to the fabric. Sulfur Black 1, the largest selling dye by volume, does not have a well defined chemical structure.
Dyeing in the Middle Ages. This glossary contains terms specific to dyeing. For terms used in the creation or manufacturing of textiles, including spinning, knitting, weaving, and individual fabrics and finishing processes, see Glossary of textile manufacturing. For terms used in sewing and tailoring, see Glossary of sewing terms.
This is a list of dyes with Colour Index International generic names and numbers and CAS Registry numbers. This list is incomplete; you can help by adding missing items.
However, vat dyes, and especially indigo, must be treated after dyeing by 'soaping' to prevent the dye from rubbing (crocking) off. [5] Vat dyes can be used to simultaneously dye the fabric and to remove underlying fiber-reactive dye (i.e., can dye a black cotton fabric yellow) because of the bleaching action of the reducing bath.