Dyes Dyes Abir (or abeer) is a dye common in India. It is used during the Holi festival, which is also called the festival of color, when people throw this colourful powder at each other. Abir is typically sold in markets prior to the festival. ...more on Wikipedia about "Abir"
The Alexa family of fluorescent dyes is produced by Molecular Probes, a subsidiary of Invitrogen. Alexas are typically used as cytoplasmic labels in cell biology. ...more on Wikipedia about "Alexa (fluor)"
The name alkanet generally refers to Alkanna tinctoria or Dyer's Bugloss (though it may be used for Anchusa officinalis or Common Bugloss). ...more on Wikipedia about "Alkanet"
Aniline, phenylamine or aminobenzene ( C6 H5 N H2) is an organic chemical compound which is a primary aromatic amine consisting of a benzene ring and an amino group. The chemical structure of aniline is shown at the right. ...more on Wikipedia about "Aniline"
Archil is a purple dye obtained from lichens.(är´kĬl, -chĬl) or orchil , blue, red, or purple dye extracted from several species of lichen , also called orchella weeds, found in various parts of the world. Commercial archil is either a powder (called cudbear). Cudbear's named comes from George who applied for the patent in 1758, after he noticed that an orchil dye was being used, that was similar to his native clothes in the Highlands. His brother Cuthbert happened to be a dye merchant in the city of Leith. ...more on Wikipedia about "Archil"
Bluing, laundry blue, or washing blue is a household product used to improve the appearance of fabrics, especially white fabrics. Used during laundering, it adds a trace of blue dye (often synthetic ultramarine, sometimes Prussian blue) to the fabric. ...more on Wikipedia about "Bluing (fabric)"
Brazilwood is a common name for wood which yields a red dye called brazilin, which oxidizes to brazilein. The name is said to come from "brasa", Portuguese for "ember," owing to its red hue. Botanically, several trees of the family Leguminosae, the ( Pulse family) are involved. ...more on Wikipedia about "Brazilwood"
Brooms are a group of evergreen, semi-evergreen, and deciduous shrubs in the subfamily Faboideae of the legume family Fabaceae, mainly in the two genera Cytisus and Genista, but also in five other small genera (see box, right). All genera in this group are from the tribe Cytiseae. These genera are all closely related and share similar characters of dense, slender green stems and very small leaves, adaptations to dry growing conditions. Most of the species have yellow flowers, but a few have white, orange, red, pink or purple flowers. Two other close relatives are Ulex (Gorse) and Laburnum (Laburnum), but these differ more strongly in appearance from the brooms. Some botanists include Podocytisus caramanica in the genus Laburnum. ...more on Wikipedia about "Broom (shrub)"
A carbene dye is a reactive dye based on carbene chemistry. ...more on Wikipedia about "Carbene dye"
DAPI or 4',6-diamidino-2-phenylindole is a fluorescent stain that binds strongly to DNA. It is used extensively in fluorescence microscopy. Since DAPI will pass through an intact cell membrane, it may be used to stain live and fixed cells. ...more on Wikipedia about "DAPI"
A dye can generally be described as a colored substance that has an affinity to the substrate to which it is being applied. The dye is usually used as an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber. In contrast, a pigment generally has no affinity for the substrate, and is insoluble. ...more on Wikipedia about "Dye"
Dyeing is the process of changing the colour of a yarn or cloth by treatment with a dye. ...more on Wikipedia about "Dyeing"
A fluorophore is a component of a molecule which causes a molecule to be fluorescent. ...more on Wikipedia about "Fluorophore"
Fuel dyes are dyes added to fuels, as in some countries it is required by law to dye a low-tax fuel to deter its use in applications intended for higher-taxed ones. ...more on Wikipedia about "Fuel dyes"
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Indigofera is a large genus of about 700 species of flowering plants belonging to the family Fabaceae. They occur throughout the tropical and subtropical regions of the world, with a few species reaching the temperate zone in eastern Asia. ...more on Wikipedia about "Indigofera"
A leuco dye is a dye whose molecules can acquire two forms, one of which is colorless. ...more on Wikipedia about "Leuco dye"
Marking Blue, Layout Stain or Prussian blue is a dye used in metalworking to aid in marking out rough parts for further machining. It is used to stain or paint a metal object with a very thin layer of dye that can be scratched off using a scriber or other sharp instrument to reveal a bright, yet very narrow line in the metal underneath. The advantages are that any existing scratches are covered with the dye and the new lines have a contrasting background. ...more on Wikipedia about "Marking blue"
(Mordant) :For the type of musical ornament mordent (note the different spelling), see Ornament ...more on Wikipedia about "Mordant"
Murexide (NH4C8H4N5O6, or C8H5N5O6.NH3), also called ammonium purpurate or MX, is the ammonium salt of purpuric acid. It may be prepared by heating alloxantin in ammonia gas to 100° C, or by boiling uramil with mercury oxide. W.N. Hartley found considerable difficulty in obtaining specimens of murexide sufficiently pure to give concordant results when examined by means of their absorption spectra, and consequently devised a new method of preparation for murexide. In this process alloxantin is dissolved in a large excess of boiling absolute alcohol, and dry ammonia gas is passed into the solution for about three hours. The solution is then filtered from the precipitated murexide, which is washed with absolute alcohol and dried. The salt obtained in this way is in the anhydrous state. It may also be prepared by digesting alloxan with alcoholic ammonia at about 78° C; the purple solid so formed is easily soluble in water, and the solution produced is indistinguishable from one of murexide. ...more on Wikipedia about "Murexide"
Optical brighteners, optical brightening agents, fluorescent brightening agents or fluorescent whitening agents are dyes that absorb light in the ultraviolet and violet region of the electromagnetic spectrum, and re-emit light in the blue region. These additives are designed to enhance the appearance of colours in fabrics and on papers. They may also enhance or modify the appearance of white items. ...more on Wikipedia about "Optical brightener"
In a reactive dye a chromophore contains a substituent that is activated and allowed to directly react to the surface of the substrate. ...more on Wikipedia about "Reactive dye" www.shortopedia.com, there's no better way.
Sulfur dyes are the biggest volume dyes manufactured for cotton. They are cheap, generally have good wash-fastness and are easy to apply. The dyes are absorbed by cotton from a bath containing sulfide and are insolubilised within the fibre by oxidation. During this process the dyes form complex larger molecules which is the basis of their good wash-fastness. ...more on Wikipedia about "Sulfur dye"
This article incorporates text from “Dwelly’s [Scottish] Gaelic Dictionary” (1911) (Dath), with additions and corrections ...more on Wikipedia about "Traditional dyes of the Scottish Highlands"
The Viologens are diquaternary derivatives of 4,4'-bipyridyl. ...more on Wikipedia about "Viologen"
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