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Home > Art, Film & Photography > Triarylmethane Dyes: Malachite Green, Methyl Violet, Phenolphthalein, Phenol Red, Brilliant Blue Fcf, Fuchsine, Coomassie, Rose Bengal
Triarylmethane Dyes: Malachite Green, Methyl Violet, Phenolphthalein, Phenol Red, Brilliant Blue Fcf, Fuchsine, Coomassie, Rose Bengal

Triarylmethane Dyes: Malachite Green, Methyl Violet, Phenolphthalein, Phenol Red, Brilliant Blue Fcf, Fuchsine, Coomassie, Rose Bengal


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About the Book

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 112. Not illustrated. Chapters: Malachite Green, Methyl Violet, Phenolphthalein, Phenol Red, Brilliant Blue Fcf, Fuchsine, Coomassie, Rose Bengal, Triphenylmethane, Bromothymol Blue, Bromophenol Blue, Bromocresol Green, Fast Green Fcf, Thymolphthalein, Brilliant Green, Green S, Aurin, Methyl Blue, Pararosaniline, Light Green Sf Yellowish, Bromocresol Purple, Patent Blue V, Cresol Red, Xylenol Orange, Crystal Violet Lactone, Water Blue, Aluminon, New Fuchsine, Bromsulphthalein, Xylene Cyanol, Victoria Blue Bo, Methylrosaniline, Ethyl Green, Chlorophenol Red, Fuchsine Acid, Fluoran, Aniline Blue Ws. Excerpt: Malachite green is an organic compound that is used as a dyestuff and has emerged as a controversial agent in aquaculture. Malachite green is traditionally used as a dye for materials such as silk, leather, and paper. Although called malachite green, the compound does not contain the mineral malachite the name just comes from the similarity of colour. Malachite Green is a member of the triphenylcarbenium salts, classified in the dyestuff industry as triarylmethane dyes. Formally, Malachite Green refers to the chloride salt Cl, although the term Malachite Green is used loosely and often just refers to the coloured cation. The oxalate salt is also marketed. The chloride and oxalate anions have no effect on the color. The intense green color of the cation results from an intense (extinction coefficient of 10 Mcm) absorption band at 621 nm. Malachite green is prepared by the condensation of benzaldehyde and dimethylaniline to give leuco malachite green (LMG): C6H5CHO + 2 C6H5N(CH3)2 C6H5CH(C6H4N(CH3)2)2 + H2OSecond, this colourless leuco compound, a relative of triphenylmethane, is oxidized to the cation that is MG: C6H5CH(C6H4N(CH3)2)2 + HCl + 1/2 O2 Cl + H2OA typical oxidizing agent is manganese dioxide. Left is leuco-Malchite Gr...


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Product Details
  • ISBN-13: 9781155852324
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 229 mm
  • No of Pages: 114
  • Spine Width: 7 mm
  • Weight: 177 gr
  • ISBN-10: 115585232X
  • Publisher Date: 15 Sep 2010
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Malachite Green, Methyl Violet, Phenolphthalein, Phenol Red, Brilliant Blue Fcf, Fuchsine, Coomassie, Rose Bengal
  • Width: 152 mm


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