what are compounds of dyes?
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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.\n\nArchaeological evidence shows that, particularly in India and the Middle East, dyeing has been carried out for over 5000 years. The dyes were obtained from either 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.\n\nThe first man-made organic dye, mauveine, was discovered by William Henry Perkin in 1856. Many thousands of dyes have since been prepared and, because of vastly improved properties imparted upon the dyed materials, quickly replaced the traditional natural dyes. Dyes are now classified according to how they are used in the dyeing process.\n\nAcid dyes are water-soluble anionic dyes that are applied to fibers such as silk, wool, nylon and modified acrylic fibers using neutral to acid dyebaths. 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.\n\nBasic 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.\n\nDirect 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.\n\nMordant 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 colour 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.\n\nLook up leuco form in Wiktionary, the free dictionary.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.\n\nReactive dyes utilize a chromophore containing a substituent that is capable of directly reacting with the fibre substrate. The covalent bonds that attach reactive dye to natural fibers make it 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 dye is by far the best choice for dyeing cotton and other cellulose fibers at home or in the art studio.\n\nDisperse dyes were originally developed for the dyeing of cellulose acetate, and are substantially water insoluble. The dyes are finely ground in the presence of a dispersing agent and then sold as a paste, or spray-dried and sold as a powder. They can also be used to dye nylon, triacetate, polyester 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 all
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Primary stain - Carbofuscin.\nDecolorizer - Acidified alcohol\nCounterstain - Methylene blue.\n\nAcid fast bacili retain the primary stain and are Red.\nNon-acid fast bacili stain blue.
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carboxly and amine groups.\n\nCheck out, http://en.wikipedia.org/wiki/Amino_acid for more info about amino acids and what the structure looks like.
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aldehyde\nthe name of the compound is propionaldehyde
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Solutions of some chemicals are coloured because the molecules in the solution selectively absorb certain colours from the light passing through. For example, if the chemical absorbed red light then the solution would appear blue-green. In the case of potassium permanganate almost all colours are absorbed, leaving only the blue/indigo/violet range (to use the popular names for the rainbow colours) to get through and cause the purple colour.\n\nNot sure by "band" whether you mean absorption band or transmittance band but the mechanism to produce one would be almost the same. An absorption band is caused by a strong removal of a certain colour (or range of wavelengths) in the area of the band and a transmittance band by the strong removal of colours on each side of the band.\n\nColours are absorbed because the energy the photons having that particular wavelength contain is exactly enough to excite an electron within a molecule. This excitation raises the electron to a higher energy level and the photon is absorbed. Somewhat later, the energy is returned to the system as the electron returns to its former energy level (often via other intermediate levels). The energy is not usually returned as light again however, but more often as a form of heat (a vibration of the crystal lattice, actually). In those cases where the energy does reappear as light the phenomenon is called luminescence, or in some circumstances laser action.\n\nElectrons associated with atoms in molecules and/or complex crystal lattices can have their energy levels changed by the close association with other atoms and so make it more likely they will absorb visible light. This is one of the reasons there are many more coloured compounds than elements. In particular, certain minerals can develop intensely absorbing locations within their structure called "colour centres" which is what produces the deep colours of precious stones. Diamond, on the other hand, is transparent because its highly ordered and stable structure means that a photon would need to have quite a high energy for it to be absorbed and so all visible light passes through unchanged.\n\nHope this is what you were after.
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carbon monoxide = CO\nIron (II) Chlorate= Fe(ClO3)2\nLead (IV) oxide = PbO4\nNitric acid = HNO3\nSulfuric Acid = H2SO4\n\nall numbers are subscripts.
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1 - NH4OH\n2 - PbO\n3 - KBr\n4 - PCl5 (five)\n5 - Al(NO3)3\n6 - Ba3(PO4)2  (not sure)\n7 - C4H10\n8 - Sn(OH)4\n9 - NH4NO3\n10 - Li3P\n11 - Ba3ClO2   (not sure)\n12 - MgSO3
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C3H7NO2 \n\nwww.chemfinder.com is a useful resource.  \n\nI hope this helps :)
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NaOH\nSn(NO3)2\nCo2O3\nFeF2\nCuS2\nFe(OH)3\nAgBr
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AgNO3 + NaCl => AgCl(white ppt) + NaNO3\nAgNO3 + KI => AgI( yellow ppt) + KNO3\n\nthere is a change of color because AgI is produced
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Methylamine\n\nNext time, just type the chemical formula into http://en.wikipedia.org/ and see if they have your compound documented.
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GFS Chemicals\n\nhttp://www.gfschemicals.com/chemicals/gfschem-5018.asp
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appearance, color, physical state, density, heat conductivity, electrical conductivity, melting point, boiling point.
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http://www.uni-regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/D-Dyeing_vat-e.htm\n\nFound by simple web search
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keeps track of chemical compounds
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ummm...anything really\n\nNaCl\n\nwater\n\npotassium chromate\n\nwhatever you want\n\npure substances like iron or nitrogen etc
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1. electron\n2. ionic\n3. molecules of compounds\n4. decomposition (not sure)