更多rosaniline例句

1. It has been explained that by the methylation of rosaniline Hofmann obtained violet colouring-matters.
2. Magenta is the salt of a base now known as rosaniline, and it belongs therefore to the class of basic colouring-matters.
3. From benzene and toluene alone about forty distinct colouring-matters of the rosaniline group are sent into commerce.
4. Later researches have shown that by heating rosolic acid with ammonia it is converted into rosaniline.
5. In France the hydrochlorate of rosaniline is chiefly employed.