Allen's Commercial Organic Analysis; A Treatise on the Properties, Modes of Assaying, and Proximate Analytical Examination of the Various Organic Chemicals and Products Employed in the Arts, Manufactures, Medicine, Etc., with Volume 5

Allen's Commercial Organic Analysis; A Treatise on the Properties, Modes of Assaying, and Proximate Analytical Examination of the Various Organic Chemicals and Products Employed in the Arts, Manufactures, Medicine, Etc., with Volume 5

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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. 1911 edition. Excerpt: ...RS, BS, Azine Blue, Indophenin Extra, Soluble Blue CB, Printing Blue, Printing Blue H, R, B, Bengal Blue, Fast Blue RR, etc. Azocarmine B. Rosindu-line aB. Disulphonic acid of phenylrosinduline;trisulphonicacid of. phenylrosinduline as Rosinduline 2B, bluish. On the fibre, the indulines are turned somewhat bluer by hydrochloric acid, but nitric acid is almost without action (distinction from indigo). Ammonia and sodium hydroxide strip the fibre, forming reddish-violet solutions, which are decolourised by zinc powder, but the colour returns on filtering and exposing the liquid to the air. An acid solution of stannous chloride strips the fibre, and forms a green solution. Hypochlorites bleach some indulines, and turn others reddish-grey. The indulines are frequently applied in printing mixed with tannin and acetins (glycerol acetic esters). On steaming, the acetin dissolves the dyestuff, a tannin lake is produced, and the ester then undergoes hydrolysis into glycerol and acetic acid. As the latter volatilises, an insoluble lake is formed on the fibre. Rosindulines and Rosindones.--The name rosinduline has been applied to the azine of the constitution CI C H5 which is obtained by heating benzeneazo-a-naphthylamine with aniline and alcohol to 1700; its constitution is evident, seeing that it may be synthesised by the condensation of hydroxynaphthaquinone-imide and o-aminodiphenylamine (Kehrmann and Messinger, Ber., 1891, 24, 584, 2167). The rosinduline used in dyeing is a disulphonic derivative. Phenylrosinduline, in which one of the hydrogen atoms of the amino group is replaced by phenyl, melts at 2350; its disulphonic acid is known as "Azocarmine" and the trisulphonic acid as Rosinduline 2B. N Rosindone, C H4/' C10H5:0, stands...show more

Product details

  • Paperback | 174 pages
  • 189 x 246 x 9mm | 322g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236641876
  • 9781236641878