The initial step in the preparation of phenol from a diazonium salt requires the diazotization of aniline using a mixture of and . What is the strictly enforced upper limit of the optimal temperature

Question

The initial step in the preparation of phenol from a diazonium salt requires the diazotization of aniline using a mixture of $NaNO_2$ and $HCl$. What is the strictly enforced upper limit of the optimal temperature range in degrees Celsius ($^\circ	ext{C}$) to prevent the explosive decomposition of the diazonium salt intermediate?

Prashant Kotian · Accepted Answer

Correct answer: 5. Diazotization of primary aromatic amines must be carried out in an ice bath. The specific critical temperature range detailed in the standard chemical protocol is to , which corresponds precisely to to . The upper limit is therefore .

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