Phenol can also combine with p-toluidine in equimolecular proportions; and this compound is of interest, from the fact that it exists in two crystalline forms melting at 28.
This equilibrium curve, therefore, shows that o-nitrophenol and p-toluidine do not combine with one another.
From p-toluidine by diazotization and subsequent treatment with sulfur dioxide and finely divided copper.
The result is a diazo-salt; aniline, for example, giving diazobenzene chloride, and toluidine diazotoluene chloride.
For example, by heating aniline salt and pure wood-spirit to a temperature considerably above that necessary for producing dimethylaniline, toluidine is formed.
It has long been known that aniline and toluidine when heated with sulphur evolve sulphuretted hydrogen and give rise to thio-bases, that is, aniline or toluidine in which the hydrogen is partly replaced by sulphur.
The large quantity of aniline and toluidine now made has opened up a channel for the use of the waste borings from cast-iron.
The thio-derivative of toluidinedescribed as "primuline" (p.
In 1864 he made the interesting discovery that magenta is not formed by the oxidation of pure aniline, but that a mixture of aniline and toluidine is essential for the production of this colouring-matter.
By modifying the conditions of reaction between the sulphur and the base, it was found in 1887 by Arthur Green, that a complicated thio-derivative of toluidine could be produced which possessed very remarkable properties.
Thus it was observed that thetoluidine colour was redder than the aniline colour, and it was a natural inference that the xylidine colour would be still redder.
From this it will be evident that an aniline rich in toluidine is an essential condition for obtaining aniline red.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "toluidine" in a variety of sentences. We hope that you will now be able to make sentences using this word.
