Benzene diazonium chloride forms orange, red dye with Resorcinol, Cresol and Phenol.
- Benzenediazonium chloride is a colourless solid and has so many uses in organic chemistry.
- Benzene diazonium chloride is prepared by aniline. When aniline reacts with nitrous acid under low temperature (0-5 0 C), benzene diazonium chloride is given as the product.
- The reaction of benzene diazonium chloride with resorcinol in a basic medium is a coupling reaction, in which p-hydroxyazobenzene is obtained that is nothing but orange dye.