2012, ISBN: 1236351258

[EAN: 9781236351258], Neubuch, [PU: Not Avail, United States], Brand New Book ***** Print on Demand *****.This historic book may have numerous typos and missing text. Purchasers can downl… Plus…

[EAN: 9781236351258], Neubuch, [PU: Not Avail, United States], Brand New Book ***** Print on Demand *****.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: .of products are thus formed, becoming bluer the greater the number of benzyl atoms introduced into the molecule. The commercial product is the hydrochloride of zinc double salt. Benzyl violet 1 Also known as Paris Violet 6 B, 7 B, Methyl Violet 6 B, 7 B, Violet 5 B, 6 B, or 7 B. closely resembles methyl violet, but dyes somewhat bluer shades. Fibres dyed by benzyl violet are turned light blue by caustic soda; but if dyed by methyl violet red-violet. In both cases, the material is decolorized after a time. Hofmann's Violets1 are of historical interest, being, with the exception of mauve (page 100), the first aniline violets produced, but they have now been nearly superseded by the newer colors, such as methyl violet. They are produced by acting on an alcoholic solution of rosaniline with caustic soda and iodide of methyl or ethyl. The larger the proportion of alkyl iodide employed, the greater is the substitution and the bluer the product. The ethylated rosunilines are redder than the corresponding methylderivatives. Regina Purple (Regina Violet, Imperial Violet, or Phenyl Violet) is probably a mixture of the acetates of phenyl-and orthotolyl-rosaniline together with the same salts of pararosaniline. It is obtained from the "eehappes" formed in the manufacture of magenta. Parma Violet or Regina Violet spirit-soluble is a similar product supposed to be the hydrochloride of diphcnylrosaniline, and is a bye-product from magenta made after the nitrobenzene method. Neither of these violets is used to any extent at the present time, and they are fast becoming obsolete. Acid Violets. There are several of these dyestuffs, which in general resemble acid magenta, but give a bluer shade in dyeing. For the most part they are sodium salts of the sulphonic acids.<

ISBN: 9781236351258

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either pa… Plus…

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. Books History~~General Commercial-Organic-Analysis~~Alfred-Henry-Allen General Books LLC<

ISBN: 9781236351258

Commercial organic analysis Volume 3, Alfred Henry Allen, Books, Science and Nature, Commercial organic analysis Volume 3, Books>Science and Nature