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  • Dyes

    Dyes

    • This piglix contains articles or sub-piglix about Dyes

    • Natural dyes

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    • Azin dyes

    • This piglix contains articles or sub-piglix about Azin dyes


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    • Azo dyes

    • This piglix contains articles or sub-piglix about Azo dyes


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    • Diarylmethane dyes

    • This piglix contains articles or sub-piglix about Diarylmethane dyes


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    • Fluorescent dyes

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    • Food colorings

    • This piglix contains articles or sub-piglix about Food colorings


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    • Fuel dyes

    • This piglix contains articles or sub-piglix about Fuel dyes


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    • Ikat

    • This piglix contains articles or sub-piglix about Ikat


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    • Indigo structure dyes

    • This piglix contains articles or sub-piglix about Indigo structure dyes


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    • Indophenol dyes

    • This piglix contains articles or sub-piglix about Indophenol dyes


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    • Perylene dyes

    • This piglix contains articles or sub-piglix about Perylene dyes


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    • Phenol dyes

    • This piglix contains articles or sub-piglix about Phenol dyes


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    • Quinoline dyes

    • This piglix contains articles or sub-piglix about Quinoline dyes


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    • Rhodamine dyes

    • This piglix contains articles or sub-piglix about Rhodamine dyes


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    • Solvent dyes

    • This piglix contains articles or sub-piglix about Solvent dyes


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    • Staining dyes

    • This piglix contains articles or sub-piglix about Staining dyes


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    • Thiazine dyes

    • This piglix contains articles or sub-piglix about Thiazine dyes


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    • Thiazole dyes

    • This piglix contains articles or sub-piglix about Thiazole dyes


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    • Triarylmethane dyes

    • This piglix contains articles or sub-piglix about Triarylmethane dyes


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    • Vat dyes

    • This piglix contains articles or sub-piglix about Vat dyes


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    • Violanthrone dyes

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    • Dye

    • A dye is a colored substance that has an affinity to the to which it is being applied. The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber. Both dyes and pigments are colored because they absorb some wavelengths of light more than others. In c ... Read »


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    • Abir

    • Gulal

      Gulal (गुलाल), also known as Abir (अबीर), is the traditional name given to the coloured powders used for the typical Hindu rituals, in particular for the Holi festival. During this festival, which celebrates love and equality, people throw these powder solutions at each othe ... Read »


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    • Acid dye

    • An acid dye is a dye which is a salt of a sulfuric, carboxylic or phenolic organic acid. The salts are often sodium or ammonium salts. Acid dyes are typically soluble in water and possess affinity for amphoteric fibers while lacking direct dyes' affinity for cellulose fibers. When dyeing, ionic bonding with fiber catio ... Read »


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    • Aniline

    • Aniline

      Aniline is an organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is the prototypical aromatic amine. Its main use is in the manufacture of precursors to polyurethane and other industrial chemicals. Like most volatile amines, it possesses the odour of rotten fish. ... Read »


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    • ANNINE-6plus

    • ANNINE-6plus

      ANNINE-6plus is a water soluble voltage sensitive dye (also called potentiometric dyes). This compound was developed at the Max Planck Institute for Biochemistry in Germany. It is used to optically measure the changes in transmembrane voltage of excitable cells, including neurons, skeletal and cardiac myocytes. ANNINE ... Read »


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    • Azadipyrromethene

    • Azadipyrromethene (ADPM) is a dye and the name of a new class of experimental photosensitizers for photodynamic therapy. Some derivatives can usefully absorb in the near-infrared. ... Read »


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    • Bleach

    • Bleach is a chemical that whitens clothing. The bleaching process has been known for millennia, but the chemicals currently used for bleaching resulted from the work of several 18th century scientists. Chlorine is the basis for the most common bleaches: for example, the solution of sodium hypochlorite, which is so ubi ... Read »


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    • Bluing (fabric)

    • Bluing, laundry blue, dolly blue or washing blue is a household product used to improve the appearance of textiles, especially white fabrics. Used during laundering, it adds a trace of blue dye (often synthetic ultramarine, sometimes Prussian blue) to the fabric. White fabrics acquire a slight color cast after use ... Read »


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    • Brooker's merocyanine


    • Carbene dye

    • A carbene dye is a reactive dye based on carbene chemistry. A benzophenone is functionalised with a chromophore or group that can be easily converted to a chromophore at a later stage. The functionalised benzophenone is reacted with hydrazine hydrate and subsequently treatment with mercury oxide. The resulting diazo c ... Read »


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    • Chloroorganic carrier

    • The chloroorganic carrier is a group of molecules that aids the transport of dyes into a fiber. ... Read »


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    • CLD chromophore

    • CLD chromophore

      CLD is a vibrant blue dye originally synthesized for application in nonlinear electro-optics. ... Read »


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    • Croconate blue

    • Croconate blue or 1,2,3-tris(dicyanomethylene)croconate is a divalent anion with chemical formula C 14N 6O2− 2 or ((N≡C−)2C=)3(C5O2)2−. It is one of the pseudo-oxocarbon anions, as it can be described as a derivative of the croconate oxocarbon anion C 5O2− 5 through the replacement of three oxy ... Read »


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    • Croconate violet

    • Croconate violet or 1,3-bis(dicyanomethylene)croconate is a divalent anion with chemical formula C 11N 4O2− 3 or ((N≡C−)2C=)2(C5O3)2−. It is one of the pseudo-oxocarbon anions, as it can be described as a derivative of the croconate oxocarbon anion C 5O2− 5 through the replacement of two oxygen ... Read »


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    • Crompton-Shenandoah Plant

    • Crompton-Shenandoah Plant

      Crompton-Shenandoah Plant, also known as The Mill at South River, is a historic textile factory complex located at Waynesboro, Virginia. The complex includes 11 contributing buildings and 8 contributing structures involved in the dyeing and finishing of the gray corduroy and velveteen goods. The historic buildings and ... Read »


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    • Dichroic dyes, electronic dyes, liquid crystalline dyes

    • Could Dichroic Dyes enable low cost heads up displays for low end vehicles? VITSWEL SMART WINDOW Methyl Orange Dye Disperse Orange 1 Dye Solvent Yellow 124 Dye Cholesterinisch (Cholesteric) Orientation Nematic Orientation Twisted Nematic LCD Schematic Some dichroic displays do not utilize polarizers. During th ... Read »


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    • Dip dye

    • Dip dye (also known as "tip dyeing") is a hair coloring style that involves dipping the ends of the hair into dye. The dye used can be either a naturally colored dye or a bright colored dye, the latter being the more popular choice. The method has become increasingly popular as a result of social media and its usage b ... Read »


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    • Disperse dye

    • Disperse dyes are the only water-insoluble dyes that dye polyester and acetate fibers. Disperse dye molecules are the smallest dye molecules among all dyes. A disperse dye molecule is based on an azobenzene (as Disperse Red 1 or Disperse Orange 37) or anthraquinone molecule with nitro, amine, hydroxyl, etc. groups att ... Read »


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    • Disperse Yellow 26

    • Disperse Yellow 26

      Disperse Yellow 26 is a disperse dye. The dye is used in polyamide and vinegar fiber dyeing. Disperse Yellow 26 is produced by the condensation of aniline and 2,5-dichloronitrobenzene. ... Read »


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    • Dye tracing

    • Dye tracing is tracking and tracing various flows using dye added to the liquid in question. That is, it uses dye as a flow tracer. The purpose of tracking may be an analysis of the flow itself, of the transport of something by the flow of the objects that convey the flow. It is an evolution of the ages-known float tra ... Read »


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    • Dyeing

    • Dyeing is the process of adding color to textile products like fibers, yarns, and fabrics. Dyeing is normally done in a special solution containing dyes and particular chemical material. After dyeing, dye molecules have uncut chemical bond with fiber molecules. The temperature and time controlling are two key factors i ... Read »


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    • Staining

    • Staining is an auxiliary technique used in microscopy to enhance contrast in the microscopic image. Stains and dyes are frequently used in biology and medicine to highlight structures in biological tissues for viewing, often with the aid of different microscopes. Stains may be used to define and examine bulk tissues (h ... Read »


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    • Dyestuffs (Import Regulation) Act 1920

    • The Dyestuffs (Import Regulation) Act 1920 (10 & 11 Geo. V c. 77) was an Act passed by the British Parliament. It came into effect on 15 January 1921 and it prohibited all imports of dyes except for special cases for ten years, although it was subsequently extended. ... Read »


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    • DyLight Fluor

    • The DyLight Fluor family of fluorescent dyes are produced by Dyomics in collaboration with Thermo Fisher Scientific. DyLight dyes are typically used in biotechnology and research applications as biomolecule, cell and tissue labels for fluorescence microscopy, cell biology or molecular biology. Historically, fluoropho ... Read »


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    • Dylon

    • Dylon International is a British brand of textile dyes and other household chemicals. It was founded in 1946 by the Mayborn Group. The Mayborn Group sold Dylon International to European homecare company Spotless Group in 2008. Dye brands include Cold Water Dye, Machine Fabric Dye and Multipurpose Dye. This a rang ... Read »


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    • FluoProbes

    • The FluoProbes series of fluorescent dyes were developed by Interchim to improve performances of standard fluorophores. They are designed for labeling biomolecules, cells, tissues or beads in advanced fluorescent detection techniques. Similar lines of fluorescent dyes provide an alternative to the FluoProbes Dyes. ... Read »


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    • Fluorescence

    • Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. The most striking example of fluorescence occurs when the abso ... Read »


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    • Fluorescence in the life sciences

    • Fluorescence is used in the life sciences generally as a non-destructive way of tracking or analysing biological molecules by means of fluorescence. Some proteins or small molecules in cells are naturally fluorescent, which is called intrinsic fluorescence or autofluorescence (such as NADH, tryptophan or endogenous Chl ... Read »


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    • Fluorophore

    • A fluorophore (or fluorochrome, similarly to a chromophore) is a fluorescent chemical compound that can re-emit light upon light excitation. Fluorophores typically contain several combined aromatic groups, or planar or cyclic molecules with several π bonds. Fluorophores are sometimes used alone, as a tracer in flui ... Read »


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    • Formazan

    • Formazan dyes are artificial chromogenic products of the reduction of tetrazolium salts by dehydrogenases and reductases. They have a variety of colors from dark blue to deep red to orange, depending on the original tetrazolium salt used as the substrate for the reaction. Leading examples of tetrazolium salts include: ... Read »


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    • Gallocyanin

    • Gallocyanin

      Gallocyanin is a chemical compound classified as a phenoxazine dye. In combination with certain metals, it is used to prepare gallocyanin stains that are used in identifying nucleic acids. ... Read »


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    • Genisteae

    • Genisteae

      Genisteae is a tribe of trees, shrubs and herbaceous plants in the subfamily Faboideae of the legume family Fabaceae. It includes a number of well-known plants including broom, lupine (lupin), gorse and laburnum. The tribe's greatest diversity is in the Mediterranean, and most genera are native to Europe, Africa, the ... Read »


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    • Glossary of dyeing terms

    • Dyeing is the craft of imparting colors to textiles in loose fiber, yarn, cloth or garment form by treatment with a dye. Archaeologists have found evidence of textile dyeing with natural dyes dating back to the Neolithic period. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years. ... Read »


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    • Glycoazodyes

    • Glycoazodyes (or GADs) are a family of "naturalised" synthetic dyes, so called because they are the conjugation of common commercial azo dyes with a sugar through a "linker". This principle is summarised in the scheme below. ^ G. Bartalucci, R. Bianchini, G. Catelani, F. D’Andrea, and Lorenzo Guazzelli, Eur. J. O ... Read »


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    • Ikat

    • Ikat, or ikkat, is a dyeing technique used to pattern textiles that employs resist dyeing on the yarns prior to dyeing and weaving the fabric. In ikat the resist is formed by binding individual yarns or bundles of yarns with a tight wrapping applied in the desired pattern. The yarns are then dyed. The bindings may the ... Read »


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    • Induline

    • Indulines are a series of dyestuffs of blue, bluish-red or black shades, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid. They were first discovered in 1863 by J. Dale and Heinrich Caro, and since then have been examined by many chemist ... Read »


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    • Industrial dye degradation

    • Synthetic dyes are found in a wide range of products such as clothes, leather accessories, and furniture. These dyes are commonly used every day. However, a side effect of their widespread use is that up to 12% of these dyes are wasted during the dying process and about 20% of this wastage enters the environment (mainl ... Read »


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    • Innis Dye Works

    • Innis Dye Works

      The former Innis Dye Works factory is located along North Water Street in Poughkeepsie, New York, United States, on a triangular lot between the street, Fall Kill and the railroad tracks of the Metro-North Hudson Line, just across from the Mid-Hudson Children's Museum. It has served a variety of industrial functions, a ... Read »


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    • INT (chemical)

    • INT

      INT or 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium is a popularly used tetrazolium salt (usually chloride), similar to tetrazolium chloride that on reduction produces a red formazan dye that can be used for quantitative redox assays. ... Read »


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    • J-aggregate

    • A J-aggregate is a type of dye with an absorption band that shifts to a longer wavelength (bathochromic shift) of increasing sharpness (higher absorption coefficient) when it aggregates under the influence of a solvent or additive or concentration as a result of supramolecular self-organisation. The dye can be characte ... Read »


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    • Kerry Woollen Mills

    • Kerry Woollen Mills are historic wool mills based just off the Ring of Kerry. Kerry Woollen Mills are one of the last remaining traditional wool mills still manufacturing in County Kerry. The company was founded over 300 years ago. The mill's machinery was originally driven by the River Gweestin, and its water was als ... Read »


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    • Leuco dye

    • A leuco dye (from the Greek leukos: white ) is a dye which can switch between two chemical forms; one of which is colorless. Reversible transformations can be caused by heat, light or pH; resulting in examples of thermochromism, and halochromism respectively. Irreversible transformation typically involve reduction or ... Read »


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    • Liquid color

    • Liquid color is the uniform dispersion of colorant and/or additives in a liquid carrier/surfactant mixture, used for imparting color or modifying other properties in plastics or rubber. Being liquid, the dispersion can be accurately metered directly into injection molding machines or extruders by in-line metering syste ... Read »


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    • List of dyes

    • This is a list of dyes with Colour Index International generic names and numbers. Note ... Read »


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    • Lumi (company)

    • Lumi

      Lumi is a Los Angeles-based company founded by Jesse Genet and Stephan Ango that manufactures packaging and branded supplies. The company got its start developing Inkodye, a photo-reactive vat dye that develops its color through exposure to UV or sunlight. Jesse Genet began experimenting with different printing te ... Read »


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    • Marking blue

    • 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 sometimes called Dykem (after a popular brand). 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 inst ... Read »


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    • Martius yellow

    • Martius yellow

      Martius yellow is a compound with formula C10H6N2O5. It is a dye. Martius yellow stains have been used to stain erythrocytes yellow so that they contrast well with red fibrin in trichrome staining methods such as Lendrum's Picro Mallory and Slidder's Martius, Scarlet and Blue (MSB). It can be combined with other small ... Read »


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    • Masterbatch

    • Masterbatch (MB) is a solid or liquid additive for plastic used for coloring plastics (color masterbatch) or imparting other properties to plastics (additive masterbatch). Masterbatch is a concentrated mixture of pigments and/or additives encapsulated during a heat process into a carrier resin which is then cooled and ... Read »


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    • Mordant

    • A mordant or dye fixative is a substance used to set dyes on fabrics or tissue sections by forming a coordination complex with the dye which then attaches to the fabric or tissue. It may be used for dyeing fabrics, or for intensifying stains in cell or tissue preparations. The term mordant comes from the present part ... Read »


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    • Mrs. Stewart's Bluing


    • Murexide

    • Murexide

      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 (5-aminobarbituric acid) with mercury oxide. W.N. Hartley found considerable difficulty in obtaining spec ... Read »


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    • Naphthol Green B

    • Naphthol Green B

      Naphthol Green B is a green nitroso dye. Naphthol Green B is the sodium salt of Naphthol Green Y (C.I. 10005). Its absorption maximum is 714 nm in water. It is water-soluble. Naphthol Green B is used in histology to stain collagen. Moreover, it is used for polychrome stains with animal tissue. For industry purpos ... Read »


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    • Naphthol yellow S

    • Naphthol yellow S

      Naphthol yellow S is an organic compound that is a dye. It is a derivative of 1-naphthol. At one time it was a popular food colorant but it was delisted in 1959 in the U.S. ... Read »


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    • Nigrosene

    • Nigrosene is an outdated trade name for a black dye made from oxidised aniline dispersed in water. It was used as a colourant in shoe polish until the 1940s, and as a dark stain for bedplates, brackets, crank handles, and wood. This name is no longer used in today's trading market. ... Read »


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    • Nigrosin

    • Nigrosin (CI 50415, Solvent black 5) is a mixture of synthetic black dyes made by heating a mixture of nitrobenzene, aniline, and hydrochloric acid in the presence of a copper or iron. Related to indulin, it is a mixture of phenazine-based compounds. Its main industrial uses are as a colorant for lacquers and varnishes ... Read »


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    • 4-Nitroaniline

    • 4-Nitroaniline

      4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C6H6N2O2. It is an organic chemical compound, consisting of a phenyl group attached to an amino group which is para to a nitro group. This chemical is commonly used as an intermediate in the synthesis of dyes, antioxidants, ... Read »


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    • 2-Nitrodiphenylamine

    • 2-Nitrodiphenylamine

      2-Nitrodiphenylamine, also called NDPA, 2-NDPA, 2NO2DPA, Sudan Yellow 1339, C.I. 10335, CI 10335, phenyl 2-nitrophenylamine, 2-nitro-N-phenylaniline, or N-phenyl-o-nitroaniline, is an organic chemical, a nitrated aromatic amine, a derivate of diphenylamine. Its chemical formula is C12H10N2O2, or C6H5NHC6H4NO2. It is a ... Read »


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    • Otranto Plantation Indigo Vats

    • Otranto Plantation Indigo Vats

      Otranto Plantation Indigo Vats are historic indigo vats located near Goose Creek, Berkeley County, South Carolina. Indigo vats are where fermentation and settlement processes for production of indigo dyestuff were accomplished. Each vat measures approximately 14 feet square and has a stuccoed interior. The upper vat, k ... Read »


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    • Pittacal

    • Pittacal was the first synthetic dyestuff to be produced commercially. It was accidentally discovered by German chemist Carl Ludwig Reichenbach in 1832, who was also the discoverer of kerosene, phenol, eupion, paraffin wax and creosote. As the history goes, Reichenbach applied creosote to the wooden posts of his home, ... Read »


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    • Procion

    • Procion is a brand of fibre reactive dyes. They are commonly used in tie dye and other textile crafts. They are dichlorotriazine dyes and were originally made by Imperial Chemical Industries. The brand name is now owned by Dystar, but, since the patent on the dyes has expired, many manufacturers around the world now ma ... Read »


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    • Propidium monoazide

    • Propidium monoazide

      Propidium monoazide (PMA) is a photoreactive DNA-binding dye that preferentially binds to dsDNA. It is used to detect viable microorganisms by qPCR. Visible light (high power halogen lamps or specific LED devices) induces a photoreaction of the chemical that will lead to a covalent bond with PMA and the dsDNA. This wil ... Read »


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    • Puccoon

    • Puccoon /pəˈkuːn/ is a common name that refers to any of several plants formerly used by certain Native Americans for dyes. The dyes were made from the plants' roots. The name is derived from the Powhatan word poughkone. The dictionary definition of at Wiktionary ... Read »


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    • Pyrromethene

    • Pyrromethene is a dye used in solid-state dye lasers. As a structural motif it is similar to the naturally occurring tetrapyrrole class of compounds. ... Read »


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    • Reactive dye

    • In a reactive dye a chromophore(an atom or group whose presence is responsible for the colour of a compound) contains a substituent that reacts with the substrate. Reactive dyes have good fastness properties owing to the bonding that occurs during dyeing. Reactive dyes are most commonly used in dyeing of cellulose like ... Read »


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    • Reactive dye printing

    • Reactive dye printing is a method of printing a dye or wax by using mixes thereof to create colors. With a binder and a heat-activated printing additive, images can be permanently bonded to the substrate (typically textiles, but can include cellulose, fibers, polyester, and even proteins). These reactions are generally ... Read »


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    • Ring dyeing

    • Ring dyeing is a type of dyeing fault in which dyes are partially diffused to the interior of fibre. Most dyes are stained on to the fibre surface that form layer of dyes on to fibre surface. Thus around the fibre a ring-like appearance of the dye can be viewed cross-sectionally. This ring-like dye layer opposes furthe ... Read »


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    • Rit

    • Rochester Institute of Technology

      NCAA Rochester Institute of Technology (RIT) is a private doctoral university within the town of Henrietta in the Rochester, New York metropolitan area. RIT is composed of nine academic colleges, including National Technical Institute for the Deaf. The Institute is one of only a small number of engineering institutes ... Read »


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    • Rylene dye

    • A rylene dye is a dye based on the rylene framework of naphthalene units linked in peri-positions. In homologues additional naphthalene units are added, forming compounds - or poly(peri-naphthalene)s - such as perylene, terrylene, quarterrylene. Perylene dyes are useful for their intense visible light absorption, ... Read »


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    • Sirius Red

    • Sirius Red F3B (Direct Red 80) is a polyazo dye used principally in staining methods for collagen and amyloid with the molecular formula C45H26N10Na6O21S6. In histology, sirius red staining is used in various domains of diagnostic to observe fibrosis levels in a lot of cases of inflammation induced by cancer, vascular ... Read »


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    • Solvent dye

    • A solvent dye is a dye soluble in organic solvents. It is usually used as a solution in an organic solvent. Solvent dyes are used to color organic solvents, hydrocarbon fuels, waxes, lubricants, plastics, and other hydrocarbon-based nonpolar materials. Fuel dyes are one use of solvent dyes. Their molecules are typica ... Read »


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    • Souk Es Sabbaghine

    • Souk Es Sabbaghine (English: Dyers market) is one of the souks of the medina of Tunis. The souk is situated at the outskirts of the medina, far from the center where the Al-Zaytuna Mosque is situated, since dyeing is considered a polluting activity. The souk is a continuation of Souk El Blat and may also be access ... Read »


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    • Southern Bleachery and Print Works

    • Southern Bleachery and Print Works

      Southern Bleachery and Print Works is a historic factory building located at Taylors, Greenville County, South Carolina. Built by the J. E. Sirrine Company of Greenville, it operated between 1924 and 1965, but the last buildings were built in 1952. The property consists of 15 contributing resources, including the main ... Read »


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    • Substantive dye

    • Substantive dye is a dye that adheres to its substrate, typically a textile, by non-ionic forces. The amount of this attraction is known as "substantivity": the higher the substantivity the greater the attraction of the dye for the fiber. Substantive dyes work best on textiles with high contents of cellulose, i.e. cott ... Read »


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    • Sulfur dye

    • Sulfur dyes are the most commonly used dyes manufactured for cotton in terms of volume. They are cheap, generally have good wash-fastness, and are easy to apply. Sulfur dyes are predominantly black, brown, and dark blue. Red sulfur dyes are unknown, although a pink or lighter scarlet color is available. The foreru ... Read »


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    • Techelet

    • Tekhelet (Hebrew: תכלת‬ təḵêleṯ, "blue-violet", or "blue", or "turquoise" (alternate spellings include tekheleth, t'chelet, techelet and techeiles) is a blue dye mentioned 49 times in the Hebrew Bible/Tanakh. It was used in the clothing of the High Priest, the tapestries in the Tabernac ... Read »


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    • Thermochromatic ink

    • Thermochromic ink (also called thermochromatic ink) is a type of dye that changes color when temperatures increase or decrease. Often used in the manufacture of many toys or product packaging, as well as thermometers. Thermochromic ink can also turn transparent when heat is applied, an example of this type of thermochr ... Read »


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    • Tie-dye

    • Tie-dye is a modern term invented in the mid-1960s in the United States (but recorded in writing in an earlier form in 1941 as "tied-and-dyed", and 1909 as "tied and dyed" by Charles E. Pellew, referenced below)) for a set of ancient resist-dyeing techniques, and for the products of these processes. The process of tie- ... Read »


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    • Viability PCR

    • Viability PCR, also named v-PCR or vPCR, is an evolution of PCR. Through the use of a simple pre-treatment of the sample by the means of specific intercalating photo-reactive reagents it's possible to neutralize the DNA of dead cells. As a result, only DNA from live cells will be detected by PCR. This approach expands ... Read »


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    • Vinyl dye

    • Vinyl dye is a product often marketed for use in recoloring vinyl upholstery in vehicles. It is also useful in recoloring soft plastics. Unlike conventional paint, vinyl dye seeps into the surface it is applied to, resulting in a color that will not peel or chip. Those who perform 'casemods' on their computers favor v ... Read »


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    • Viologen

    • Viologens are toxic bipyridinium derivatives of 4,4'-bipyridyl. The name is because this class of compounds is easily reduced to the radical mono cation, which is colored intensely blue. Possibly the best-known viologen is paraquat, which is one of the world's most widely used herbicides. Viologens are used for e ... Read »


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    • Yeomsaek

    • Yeomsaek is a traditional Korean process for dyeing cloth. Yeomsaek primarily uses natural colourings such as tea, saffron and gardenia. The most important of these from a cultural perspective is indigo (jjock), which was used for the Korean Royal Family and for weddings. The indigo dyeing process is centred in the N ... Read »


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