Disperse dyes are the only water insoluble dyes dyeing polyester [1] and acetate fibers. Disperse dye molecules are the smallest dye molecules among all dyes.[citation needed] A disperse dye molecule is based on an azobenzene (as Disperse Red 1)[2] or anthraquinone (say, Disperse Orange 37[3]) molecule with nitro, amine, hydroxyl, etc. groups attached to it.[1][not in citation given]

Dyeing Polyester with Disperse DyesPolyester requires the use of disperse dyes. Other types of dyes leave the color of polyester almost entirely unchanged. While novices happily charge into dyeing with acid dyes (for wool or nylon) and fiber reactive dyes (for cotton and rayon), often with excellent results, the immersion dyeing of polyester is a different story.

However, disperse dye can be used by even young children to make designs on paper, which can then be transferred to polyester fabric, or other synthetics, with a hot iron. The possibilities are endless, using fabric crayons, rubber stamps, painting, and even screen printing.

How can I dye a polyester dress?Commonly, people who have never dyed anything before will e-mail me asking how they can dye dresses for their weddings, or their daughters' weddings. Attempting to do this would almost always be a grave error. Immersion dyeing with polyester is not a job for beginners; it is both more difficult and more dangerous than immersion dyeing cotton or wool. Furthermore, most such pre-made dresses are marked "dry clean only", and you simply cannot dye a garment that is not washable.

Is there someone who will dye my polyester formal for me?No. It is exceedingly rare to find a service that will custom dye a single garment for you, and nobody anywhere will take the risk of ruining a dry-clean-only garment by dyeing it. If you want a dress in a certain color, buy fabric in that color, or dye yardage of an easily dyeable material such as cotton or silk, and hire a local seamstress to sew it for you.

If you have a washable garment, you may be able to find someone who does custom dyeing on my Listing of Custom Dyers page. Do not post your need there; instead, check for someone advertising services there. Most dyers are willing to dye natural fibers only and refuse to consider dyeing polyester garments.

Immersion dyeing polyesterThe difficulty with polyester dyeing is that it requires a lot of heat to get the dye into the fiber. Boiling water is not hot enough to do the job by itself, so a noxious-smelling carrier chemical must be added, for immersion dyeing, unless newer low-energy disperse dyes are used. Polyester dye actually transfers to the fibers best at very high temperatures, the temperature of a hot iron,

or higher. Before you decide to try immersion dyeing polyester, study the directions at ProChem (see below, under "Specific Instructions") to get an idea of how difficult it may be.

Novel forms of disperse dyesHowever, even if you should not attempt to dye your own formal dress, there are many fun projects that are highly suitable to even the least experienced fabric artist.

Crayons

Crayola, the maker of wax crayons for paper, also makes fabric crayons for use

on polyester and other synthetics. These crayons consist of disperse dye, and can be found in most fabric or crafts stores, even in discount department stores such as Target or WalMart. You do not draw directly on the fabric; instead, you draw on paper - or have your children draw on paper! - and then iron the resulting pictures onto the fabric. (Be sure that any writing is backwards on the paper,

since it will come out reversed on the fabric.) The crayons are not particularly bright on paper, but become vivid when heat-transferred to the fabric. For an example, see my page Iron-on Fabric Crayons for Synthetic Fibers.

Note that, like most dye, disperse dye is transparent. This means that you should transfer it only onto white or pale colors of fabric, so that you can see the results.

Stamp Pad Ink

Disperse dye can be applied to paper with rubber stamps, and then ironed on to polyester, just like the crayons. You can use special, large-scale fabric stamps to apply other dyes to fabric, but only disperse dyes allow such fine lines that almost any rubber stamp designed for use on paper will work, if your fabric is smooth enough. Look for a product called "Heat Set Ink" at companies that sell rubber stamping supplies. Caroline Dahl's wonderful book Transforming Fabric gives source information for this material, in addition to many project ideas and beautiful inspiring photographs of works made with disperse dye on polyester.

Iron-on paintings - watercolor painting, hand painting, screen printing

The powdered disperse dye can be mixed into paint to apply directly in any of several techniques.

Just as with the Crayola fabric crayons, you can use disperse dye to paint on paper, then iron it on to your fabric. Mix the dye with enough boiling water to dissolve it, then dilute with cool water to the desired strength - trial and error must be your guide here, keeping in mind that you cannot know how intense the final color will be until you actually iron it on, as it is much more beautiful on the cloth than on the paper. See the Batik Oetoro web site and Prochem's instructions for transfer printing (via the links below) for detailed directions.

If, like most irons, yours has holes in its face plate, you must be sure to move the iron around constantly during the transfer process, to prevent holes from appearing in your design, and yet you must not allow the paper transfer to move on the fabric, or the image will be blurred. A heat transfer press, such as are used in t-shirt shops, would be more desirable, as it not only lacks holes, but, more importantly, reaches a higher temperature. However, at around a thousand dollars, this is far more of an investment than most individuals are prepared to make. For a more modest sum, consider the Dry Iron, without steam holes, at the Vermont Country Store's website.

Resisting dye transfer

Here's a very simple project that can be done with disperse dye - simple in concept, that is, but very complex and beautiful in its details. As pictured in Kate Wells' Fabric Dyeing & Printing, artist Sarah Batho applied disperse dye paint to paper (you could equally well color it heavily with Crayola fabric crayons), scattered real bird feathers across her polyester fabric, then ironed the dye right over the feathers. The feathers prevented the dye from reaching the fabric, leaving a lovely delicate design of white feathers on an intense blue background.

A consistently inspiring fabric artist and author, Carolyn Dahl, wrote a book called Natural Impressions: Taking an Artistic Path Through Nature with many inspirations as to the use of natural materials in applying designs to cloth; while it does not mention disperse dyes on polyester in this book, as far as I recall, some of the leaf projects, in particular, might be perfect for a similar technique. (I love Dahl's books, and recommend them highly.)

How to Tie Dye PolyesterTie-dyeing polyester is not a project for the novice tie-dyer. Only a real expert should even consider it. If you are just starting out, please try dyeing with fiber reactive dyes on cotton, rayon, or silk, first.

Immersion Tie-dyeing

Traditional single-color tie-dye can be done by tying the dry garment, then dropping it into a hot immersion bath. See the links for directions for immersion dyeing, below. You can get interesting results by tying and dyeing once, washing out, and retying in a different pattern before dropping in another boiling dye bath of a different color. For example, a first dyeing of turquoise followed by another dyeing with fuschia will produce a purple garment with patterns of turquoise and fuschia where the ties prevented full penetration of one of the dyes. Interesting shiborit-like textures result from boiling tied polyester.

Direct Application Tie-Dyeing

ProChem's instructions for direct application on polyester (see link under "Specific Instructions", below) can be used for a more challenging approach that will give results similar to the currently

popular cotton tie-dye techniques. After applying a paint that contains special thickener paste, citric acid, dye carrier, and disperse dye, steam or pressure steam for 30 to 60 minutes to set the dye in the fabric.

Sources for Disperse DyeAs dyeing polyester is far less popular among artists and craftspersons than the dyeing of cotton or wool, there are fewer providers of disperse dyes for home or studio use. Among them are, in the US, PRO Chemical and Dye (PROchem), and Aljo Dyes, Batik Oetoro and KraftKolour in Australia, and Kemtex and Rainbow Silks in the UK. Dye suppliers that sell Jacquard Products may carry their brand of disperse dye, iDye Poly. Some suppliers label their disperse dyes as "transfer dyes". For contact information, see Sources for Dyeing Supplies.

Specific Instructions OnlinePROchem provides excellent technical support for their products, including online explicit directions for dyeing synthetic fibers with their PROsperse line of disperse dyes:

Solid Shade/Immersion on Polyester Solid Shade/Immersion on Nylon/Acetate Solid Shade/Immersion on Acrylic Painting & Printing/Direct Application   on Polyester Painting & Printing/Direct Application on Nylon Transfer Printing

The other US source of disperse dyes, Aljo Dyes, provides a small amount of information, as well:

Directions for Dyeing Polyester with Disperse Dye

Batik Oetoro gives instructions for transfer printing and immersion dyeing with disperse dyes, which they sell under the brand name of Polysol Dyes.

Dye instructions including Polysol Disperse Dyes

Jacquard Products gives one page of instructions for using both their iDye and iDye Poly dyes; the dyes are described as "easy to use washing machine dyes", but the detailed instructions clarify that stovetop heating is required for iDye Poly. (Just plain "iDye" dyes, as distinct from "iDye Poly", are direct dyes, which do not work on polyester, only on cellulose fibers and silk.)

(If any of these links ever break, just go directly to the company's web site and look around.)

Common and Generic Names for Disperse Dyes

Colour Index Names for PROSperse Disperse Dyes

PRO chem # Name Colour Index NameD118 Bright Yellow Disperse Yellow 218D225 Clear Orange Disperse Orange 25D333 Fuchsia Disperse Violet 33D350 Flame Scarlet Disperse Red 325D360 Bright Red Disperse Red 60D426 Turquoise Disperse Blue 26D450 National Blue Disperse Blue C-4RA (manufacturer's mix?)D459 Bright Blue Disperse Blue 56D460 Deep Navy Disperse Navy 35D650 Cool Black Disperse Black C-MDA (manufacturer's mix?)D770 Meadow In House MixD773 Sage In House MixD880 Iris In House MixD885 Lilac In House MixD125 Buttercup In House Mix

Other names for synthetic fibersPolyester fibers are sold under various names, including the following: Crimplene, Dacron, Enkalen, Lavsan, Mylar, Tergal, Terlenka, Terylene, Trevira, Polarfleece, and Polartec. Polyester is, chemically, a fiber made of poly(ethylene terephthalate), and can be made from recycled plastic bottles. Plastics marked with the recycle logo containing a number 2 are HDPE (high density polyethylene), plastics marked with the recycle logo containing a number 4 are LDPE (low density polyethylene), and plastics marked with the recycle logo containing a number 1 are PETE (polyethylene terephthalate - e.g., Dacron, Fortrel, Mylar).

A new polyester, called Corterra®, was developed in the 1990s by Shell and licensed by KoSa; it is composed of polytrimethylene terephthalate, and is dyed with disperse dyes like other polyesters.

Nylon, chemically a form of polyamide, is sold as Antron. The form described as Nylon 6,6 is stretch nylon, sold as Ban-Lon and BriNylon. Nylon 6 (polycaprolactam) is sold under the names Akulon, Amilen, Carpolan, Enkalon, Grillon, and Perlon. Nylon 11 is sold under the name of Rislan. (See How to Dye Nylon.)

Polypropylene should not be dyed at home or in the studio. It is popular for hiking socks and long undergarments. Names under which it is sold include Meraklon, Monolene, Polyfilene, Prolene, and Ulstron. Products marked with the recycle logo containing a number 5 are polypropylene.

Polyvinyl chloride. Products marked with the recycle logo containing a number 3 are PVC.

Acrylic is sold under names such as Orlon, Courtelle, Dralon, Leacryl, and Nitron. It is composed of poly(propenonitrile)(polyacrylonitrile) with small amounts of a comonomer. Acrylic can be dyed to pale or medium shades with disperse dye.

Modacrylic is sold under names such as BHS, Creslon, PAN, and Teklan, and also, according to Ingamells, as Lycra (which must have been a misprint). Modacrylic fibers are between 35% and 85% acrylonitrile, and are made from resins that are copolymers (combinations) of acrylonitrile and other materials such as vinyl chloride, vinylidene chloride or vinyl bromide. Modacrylic can probably be dyed just like acrylic.

Lycra, a spandex fiber produced by Dupont, is elastic spun polyurethane, a plastic which is also used to construct upholstery foams. It must not be subjected to high heat, and is thus not appropriate for use with disperse dye. Most lycra garments contain a high percentage of cotton, which can be dyed with cool water fiber-reactive dye; often, the undyed lycra does not even show on the outside of the garment.

Ingeo® is a "natural" polylactate fiber derived from corn. It can be dyed only with disperse dyes, like polyester, but it shows lower washfastness with these dyes than does polyester.

Source for names (except for Ingeo): Wilfred Ingamells, Colour for Textiles: A User's Handbook, The Society of Dyers and Colourists, 1993, ISBN 0 901956 56 2.

SafetyWhile the immersion dyeing with disperse dyes is difficult and somewhat dangerous, due to the temperatures required and the carrier chemicals, the disperse dye itself is considered non-toxic. Even children can engage in these crafts, if an adult is available to do the ironing step for them.

All powdered dyes are dangerous to breathe, like most powdered substances. Even many foods can be quite damaging when inhaled in powdered form. Avoid breathing dye powder. Wear a dust mask while measuring any dye powder, and wipe up spilled dye, of any dye class, as it may turn back into powder when it dries.

Another safety issue is allergenicity. It seems that disperse dyes on fabric are more likely to cause allergies than other textiles dyes. Fiber reactive dyes are known for their ability to cause serious allergies to those who carelessly breathe the dye powder while measuring it out, but, once they are chemically bonded to the fiber and excess dye has been fully washed out, they are suitable for even the chemically sensitive. Disperse dye, in contrast, may cause allergic reactions in susceptible people, just by their wearing clothing dyed with it. This may be due to some dye molecules rubbing off of the fiber. This problem, though not at all common, may be seen with commercially dyed fabric as well as home-dyed fabric, and may be partially responsible for the preference for natural fiber clothing among the chemically sensitive. (Reference: J Am Acad Dermatol. 1995 Apr;32(4):631-9.)

Since no disperse dyes (and few other textile dyes) have been shown by safety testing to be harmless when consumed by humans or animals, the cooking pot used to boil the dye with the fiber should not be reused for food preparation.

Further ReadingKate Wells' Fabric Dyeing and Printing , from Interweave Press, 1997, shows photographs of the process of transfer printing on polyester with disperse dyes. Illustrations and instructions include simple transfer printing, printing with leaves that have been coated with disperse dye, simple resists of disperse dye transfer, and pressure steaming after direct application.

Ann Milner's Ashford Book of Dyeing , from Shoal Bay Press, 1998, includes a three-page chapter with detailed clear recipes for using disperse dyes in a dye bath, by direct application, and by heat transfer.

Holly Brackmann's The Surface Designer's Handbook: Dyeing, Printing, Painting, and Creating Resists on Fabric , from Interweave Press, 2006, is the best book I've seen on disperse dyes for hand dyers, with an eight-page chapter on them. She includes separate recipes for disperse immersion dyeing of nylon, acetate and acrylic; disperse immersion dyeing of polyester; direct application of disperse dyes on nylon, rayon acetate, and polyester; and transfer printing, plus a number of variations for transfer printing, including combining transfer printing and permanently pleating polyester in a single step.

http://www.pburch.net/dyeing/dispersedye.shtml

A class of slightly water-soluble dyes originally introduced for dyeing acetate and usually applied from fine aqueous suspensions. Disperse dyes are widely used for dyeing most of the manufactured fibers.

Dyes are colored, unsaturated organic chemical compounds capable of giving colour to a substrate (a textile), i.e. colouring or dyeing it.

The term “disperse dye” have been applied to the organic colouring substances which are free from ionizing groups, are of low water solubility and are suitable for dyeing hydrophobic fibres. The dye has derived its name for its insoluble aqueous properties and the need to apply it from an aqueous dispersion. Of all the dyes, they are of the smallest molecular size.

Disperse dyes have substantivity for one or more hydrophobic fibres e.g. cellulose acetate, nylon, polyester, acrylic and other synthetic fibres.

The negative charge on the surface of hydrophobic fibres like polyester can not be reduced by any means, so non-ionic dyes like disperse dyes are used which are not influenced by that surface charge.  

History of Disperse DyeIn 1922, Green and Saunders made one type of coloured azo compound, in which a solubilizing group (for example- methyl sulphate, -CH2-SO3H) is attached to amino group. In dye bath, they are slowly hydrolyzed and produce azo compound and formaldehyde bi sulphate. This free azo compound was capable of dyeing cellulose acetate fibres. This dye was named “ionamine”. But this ion amine did not give satisfactory result in dyeing.

Later in 1924, Baddiley and Ellis produced sulpho ricinoleic acid (SRA) for dyeing acetate fibres. This SRA was used as dispersing agent. Later it was seen that SRA was capable of dyeing Nylon, polyester, acrylic etc. In 1953 this dye was named as “Disperse Dye”.  

 Properties of Disperse Dyes Ø Disperse dyes are nonionic dyes. So they are free from ionizing group. Ø They are ready made dyes and are insoluble in water or have very low water solubility. Ø They are organic colouring substances which are suitable for dyeing hydrophobic fibres. Ø Disperse dyes are used for dyeing man made cellulose ester and synthetic fibres specially acetate and polyester fibres and sometimes nylon and acrylic fibres. Ø Carrier or dispersing agents are required for dyeing with disperse dyes. Ø Disperse dyes have fair to good light fastness with rating about 4-5. Ø The wash fastness of these dyes is moderate to good with rating about 3-4. Ø Of all dyestuffs disperse dyes are of smallest molecular size. Ø Generally disperse dyes are derivatives of azo, anthroquinone, nitro and quinine groups. Ø They do not undergo any chemical change during dyeing. Ø In presence of nitrous oxide, textile materials dyed with certain blue and violet disperse dyes with an anthraquinone structure will fade. This is called gas fading of disperse dyes which is a defect of this dye. 

http://textilelearner.blogspot.com/2012/01/disperse-dye-history-of-disperse-dye.html

A dye is a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and requires a mordant to improve the fastness of the dye on the fiber.

Both dyes and pigments appear to be colored because they absorb some wavelengths of light more than others. In contrast with a dye, a pigment generally is insoluble, and has no affinity for the substrate. Some dyes can be precipitated with an inert salt to produce a lake pigment, and based on the salt used they could be aluminum lake, calcium lake or barium lake pigments.

Dyed flax fibers have been found in the Republic of Georgia dated back in a prehistoric cave to 36,000 BP.[1][2] Archaeological evidence shows that, particularly in India and Phoenicia, dyeing has been widely carried out for over 5000 years. The dyes were obtained from animal, vegetable or mineral origin, with no or very little processing. By far the greatest source of dyes has been

from the plant kingdom, notably roots, berries, bark, leaves and wood, but only a few have ever been used on a commercial scale.

Contents[hide]

1 Natural dye 2 Synthetic dye 3 Dye types 4 Food dyes 5 Other important dyes 6 Chemical classification 7 See also 8 References 9 Further reading 10 External links

[edit] Natural dye

Dyeing wool cloth, 1482.

Main article: Natural dye

The majority of natural dyes are from plant sources – roots, berries, bark, leaves, and wood, fungi, and lichens. Textile dyeing date back to the Neolithic period. Throughout history, people have dyed their textiles using common, locally available materials. Scarce dyestuffs that produced brilliant and permanent colors such as the natural invertebrate dyes Tyrian purple and crimson kermes were highly prized luxury items in the ancient and medieval world. Plant-based dyes such as woad, indigo, saffron, and madder were raised commercially and were important trade goods in the economies of Asia and Europe. Across Asia and Africa, patterned fabrics were produced using resist dyeing techniques to control the absorption of color in piece-dyed cloth. Dyes from the New World such as cochineal and logwood were brought to Europe by the Spanish treasure fleets, and the dyestuffs of Europe were carried by colonists to America.[citation

needed]

The discovery of man-made synthetic dyes late in the 19th century ended the large-scale market for natural dyes.

Historical collection of > 10.000 dyes at Technical University Dresden, Germany.

[edit] Synthetic dyeThe first human-made (synthetic) organic dye, mauveine, was discovered serendipitously by William Henry Perkin in 1856. Many thousands of synthetic dyes have since been prepared.[3][4]

Synthetic dyes quickly replaced the traditional natural dyes. They cost less, they offered a vast range of new colors, and they imparted better properties to the dyed materials.[5] Dyes are now classified according to how they are used in the dyeing process.

[edit] Dye typesAcid dyes are water-soluble anionic dyes that are applied to fibers such as silk, wool, nylon and modified acrylic fibers using neutral to acid dye baths. Attachment to the fiber is attributed, at least partly, to salt formation between anionic groups in the dyes and cationic groups in the fiber. Acid dyes are not substantive to cellulosic fibers. Most synthetic food colors fall in this category.

Basic dyes are water-soluble cationic dyes that are mainly applied to acrylic fibers, but find some use for wool and silk. Usually acetic acid is added to the dyebath to help the uptake of the dye onto the fiber. Basic dyes are also used in the coloration of paper.

Direct or substantive dyeing is normally carried out in a neutral or slightly alkaline dyebath, at or near boiling point, with the addition of either sodium chloride (NaCl) or sodium sulfate (Na2SO4). Direct dyes are used on cotton, paper, leather, wool, silk and nylon. They are also used as pH indicators and as biological stains.

Mordant dyes require a mordant, which improves the fastness of the dye against water, light and perspiration. The choice of mordant is very important as different mordants can change the final color significantly. Most natural dyes are mordant dyes and there is therefore a large literature base describing dyeing techniques. The most important mordant dyes are the synthetic mordant dyes, or chrome dyes, used for wool; these comprise some 30% of dyes used for wool, and are especially useful for black and navy shades. The mordant, potassium dichromate, is applied as an after-treatment. It is important to note that many mordants, particularly those in the heavy metal category, can be hazardous to health and extreme care must be taken in using them.

Vat dyes are essentially insoluble in water and incapable of dyeing fibres directly. However, reduction in alkaline liquor produces the water soluble alkali metal salt of the dye, which, in this leuco form, has an affinity for the textile fibre. Subsequent oxidation reforms the original insoluble dye. The color of denim is due to indigo, the original vat dye.

Reactive dyes utilize a chromophore attached to a substituent that is capable of directly reacting with the fibre substrate. The covalent bonds that attach reactive dye to natural fibers make them among the most permanent of dyes. "Cold" reactive dyes, such as Procion MX, Cibacron F, and Drimarene K, are very easy to use because the dye can be applied at room temperature. Reactive dyes are by far the best choice for dyeing cotton and other cellulose fibers at home or in the art studio.

Disperse dyes were originally developed for the dyeing of cellulose acetate, and are water insoluble. The dyes are finely ground in the presence of a dispersing agent and sold as a paste, or spray-dried and sold as a powder. Their main use is to dye polyester but they can also be used to dye nylon, cellulose triacetate, and acrylic fibres. In some cases, a dyeing temperature of 130 °C is required, and a pressurised dyebath is used. The very fine particle size gives a large surface area that aids dissolution to allow uptake by the fibre. The dyeing rate can be significantly influenced by the choice of dispersing agent used during the grinding.

Azoic dyeing is a technique in which an insoluble azo dye is produced directly onto or within the fibre. This is achieved by treating a fibre with both diazoic and coupling components. With suitable adjustment of dyebath conditions the two components react to produce the required insoluble azo dye. This technique of dyeing is unique, in that the final color is controlled by the choice of the diazoic and coupling components. This method of dyeing cotton is declining in importance due to the toxic nature of the chemicals used.

Sulfur dyes are two part "developed" dyes used to dye cotton with dark colors. The initial bath imparts a yellow or pale chartreuse color, This is aftertreated with a sulfur compound in place to produce the dark black we are familiar with in socks for instance. Sulfur Black 1 is the largest selling dye by volume.

[edit] Food dyesOne other class that describes the role of dyes, rather than their mode of use, is the food dye. Because food dyes are classed as food additives, they are manufactured to a higher standard than some industrial dyes. Food dyes can be direct, mordant and vat dyes, and their use is strictly controlled by legislation. Many are azo dyes, although anthraquinone and triphenylmethane compounds are used for colors such as green and blue. Some naturally-occurring dyes are also used.

[edit] Other important dyesA number of other classes have also been established, including:

Oxidation bases, for mainly hair and fur Laser dyes: see, for example, rhodamine 6G and coumarin dyes.[6]

Leather dyes, for leather Fluorescent brighteners , for textile fibres and paper Solvent dyes , for wood staining and producing colored lacquers, solvent inks, coloring oils,

waxes. Carbene dyes , a recently developed method for coloring multiple substrates Contrast dyes, injected for magnetic resonance imaging, are essentially the same as clothing dye

except they are coupled to an agent that has strong paramagnetic properties. [7]

[edit] Chemical classificationBy the nature of their chromophore, dyes are divided into:[8]

Category:Acridine dyes , derivates of acridine Category:Anthraquinone dyes , derivates of anthraquinone Arylmethane dyes

o Category:Diarylmethane dyes , based on diphenyl methaneo Category:Triarylmethane dyes , derivates of triphenyl methane

Category:Azo dyes , based on -N=N- azo structure Diazonium dyes, based on diazonium salts Nitro dyes, based on a -NO2 nitro functional group Nitroso dyes, based on a -N=O nitroso functional group Phthalocyanine dyes, derivatives of phthalocyanine Quinone-imine dyes, derivativees of quinone

o Category:Azin dyes Category:Eurhodin dyes

Category:Safranin dyes , derivates of safranino Indaminso Category:Indophenol dyes , derivates of indophenolo Category:Oxazin dyes , derivates of oxazino Oxazone dyes, derivates of oxazoneo Category:Thiazin dyes , derivatives of thiazin

Category:Thiazole dyes , derivatives of thiazole Xanthene dyes, derived from xanthene

o Fluorene dyes, derivatives of fluorene Pyronin dyes

o Category:Fluorone dyes , based on fluorone Category:Rhodamine dyes , derivatives of rhodamine

1)http://en.wikipedia.org/wiki/Dye