C6H5 is first formed and then undergoes a peculiar re-arrangement into benzidine (see H.
Benzidine crystallizes in plates (from water) which melt at 122 deg.
This reaction is known as thebenzidine transformation.
Benzidine (Wallis[6]) has also been suggested for the detection of free chlorine.
Beginning of manufacture of cotton azo-dyes, and leading to the production of benzidine and tolidine on a large scale.
In addition to benzidine and tolidine, other diazotisable amido-compounds have of late years been pressed into the service of the colour-manufacturer.
Secondary azo-dyes from benzidineand tolidine containing two dissimilar amines, phenols, &c.
Thus diazotised benzidine and tolidine combine with salicylic acid to form valuable yellow azo-dyes known as "chrysamines.
When these are reduced by acid reducing-agents, they become converted into diamido-bases which are known as benzidine and tolidine respectively.
It is impossible to attempt to specify by name any of these recent benzidine and tolidine dyes.
Most of them are azo compounds derived from benzidine or tolidine.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "benzidine" in a variety of sentences. We hope that you will now be able to make sentences using this word.
