Fuchsine sentence examples

  • P. Leroux discovered that iodine vapour refracted the red rays more than the violet, the intermediate colours not being transmitted; and in 1870 Christiansen found that an alcoholic solution of fuchsine refracted the violet less than the red, the order of the successive colours being violet, red, orange, yellow; the green being absorbed and a dark interval occurring between the violet and red.

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  • FUCHSINE, or Magenta, a red dyestuff consisting of a mixture of the hydrochlorides or acetates of pararosaniline and rosaniline.

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  • An aqueous solu tion of fuchsine is decolorized on the addition of sulphurous acid, the easily soluble fuchsine sulphurous acid being formed.

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  • The constitution of the fuchsine bases (pararosaniline and rosaniline) was determined by E.

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  • Hofmann having previously shown that oxidation of pure aniline alone or of pure toluidine yielded no fuchsine, whilst oxidation of a mixture of aniline and para-toluidine gave rise to the fine red dyestuff para-fuchsine (pararosaniline hydrochloride) CH 3 C 6 H 4 NH 2 +2C 6 H 5 NH 2 +30 = HOC(C 6 H 4 NH 2) 3 +2H20.

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  • It occasionally acts as an oxidizing agent, as in the preparation of quinoline and fuchsine.

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  • Reference should be made to the articles Dyeing, Fuchsine, Safranine, Indulines, for more details On this subject.

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  • In commerce three brands of aniline are distinguished - aniline oil for blue, which is pure aniline; aniline oil for red, a mixture of equimolecular quantities of aniline and orthoand para-toluidines; and aniline oil for safranine, which contains aniline and ortho-toluidine, and is obtained from the distillate (echappes) of the fuchsine fusion.

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  • Aldehydes are characterized by the reddish-violet colour which they give with a solution of fuchsine that has been decolorized by sulphurous acid (H.

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