Diamond yellow

Acid alizarine yellow, eriochrome yellow, eriochrome phosphine, alizarine yellow G, G, 3 G, R, flavazol, diamond flavine, anthracene yellow, alizadine yellow, chrome fast yellow, fast mordant yellow, salicine yellow D, diamond yellow, chrome yellow, chrome orange, etc. 6. 9 hi s Mordant present. Boll with 5 per cent, sodium acetate and a piece of white cotton for two minutes. Decolorised. Colour is not 1 air or by persulphate Axo mordant (Cr... 

Diamond Yellow G.. Diamond Yellow R.. Cloth Brown R. Cloth Brown G. Cloth Orange il-amidobenzoic acid. 0-amidobenzoic acid. Benzidine.. . 1 1 Salicylic acid. Salicylic acid. 1 mol. salicylic acid, 1 mol. a-naphtholsulphonic acid. 1 mol. salicylic acid, 1 mol. /3 3-dioxynaphthalene. 1 mol. salicylic acid, 1 mol. resorcin. 

The substance indicated by the same symbol in two or more equations is in exactly the same state in the reactions represented by those equations. In particular, the different allotropic modifications of a solid element (e.g., charcoal, graphite, diamond or yellow and red phosphorus) have different heats of combustion, and the particular form used must be specified in every case. 

Fig. 3.15 Model for allosteric inhibition of a protein-DNA complex by a polyamide-inter-calator conjugate. (Top) The GCN4 homodimer (yellow) is displaced by the intercalating moiety (green) of the polyamide conjugate. Blue and red spheres represent pyrrole and imidazole amino acids, respectively. The blue diamond represents / -alanine. (Bottom, left) Hydrogen-bonding model of an eight-ring hairpin polyamide-intercalator conjugate...

Throughout history civilization has treasured the rarity and beauty of fancy colored diamonds. The stunning diamond from India known as the Hope Diamond, once a part of many royal inventories, is now the premier attraction of the Smithsonian Institution (see color Fig. 4.3.1). While the size of the diamond at 45.52 carats has certainly contributed to the public s interest in the gem, the intense blue-violet color of the stone is generally considered to be its most captivating feature. First described in the mid 1600s by the French merchant traveller Jean Baptiste Tavernier as un beau violet (a beautiful violet), the gem also acquired the title Blue Diamond of the Crown or the Royal French Blue when in possession of King Louis XIV of France. The blue color is attributed to trace amounts of boron in the carbon matrix of the stone. Substitution of carbon atoms by nitrogen leads to yellow diamonds, such as the famous canary yellow 128.51-carat Tiffany diamond. 

Figure 2.11 Plot of compounds developed for different target classes based on a principal components analysis (PCA) of 2D structure-based property fingerprints. Compounds are coded according to their target class (triangle, PDE square, 5HT receptor diamond, statin circle, F-quinoline antibiotics) and clinical status at the time (gray, ok yellow, clearance issue red,...

The efficacy of diamond and metal-alloy electrodes for the degradation of the textile dyes Basic yellow 28 and Reactive black 5 was also followed by RP-HPLC. The chemical structures of the textile dyes under investigation are shown in Fig. 3.56. An ODS column (150 X 4.6 mm i.d. particle size 5 jttm) was employed for the RP-HPLC determination of... 

M. Ceron-Rivera, M.M. Davila-Jimenez and M.P. Elizalde- Gonzalez, Degradation of the textile dyes Basic yellow 28 and Reactive black 5 using diamond and metal alloys electrodes. Chemosphere, 55 (2004) 1-10. 

My hands and arms, as well as everyone else s, speared to be yellow. .. Any white or light colored spot on the floor or wall seemed to sparkle like diamonds. 

The diamond is found in natural deposits in many parts of the world. Also, it can be synthesized from graphite or other carbonaceous materials. Graphite can be converted to diamond under high temperatures (about 1,400°C) and very high pressure (in the range 4,000-5,000 atm) in the presence of a metal catalyst such as iron or nickel. Presence of trace impurities can impart different coloration to diamonds. For example, introducing trace boron or nitrogen causes blue or yellow coloration. 

The cubic form resembles diamond in its crystal structure and is almost as hard. The theoretical density is 3.48 g/mL. It is colodess and a good electrical insulator when pure traces of impurities add color and make it semiconducting, eg, a few ppm of Be make it blue and />-type whereas small amounts of S, Si, or CN favor yellow, -type crystals. It is possible to makep—n junctions by growing -type material on j -type seed crystals (12). If this is done carefully in an alkaline-earth nitride bath using a temperature difference technique, as with large diamond crystals (see Diamond, SYNTHETIC), the resulting diodes are several mm in size and emit blue light when forward-biased (13,14). 

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