Synthesis of Nitrobenzene

Set up an ice bath, add 80 mL of conc. sulfuric acid and 70 mL of conc. nitric acid, wait until the solution cools down to 0°C. Start adding 60 mL of benzene with stirring, the temperature must be below 35°C, after addition stir for 30 minutes at room temperature. Pour the solution into a separatory funnel, discard the bottom acid layer, wash 3x 40 mL with cold water, discard the aqueous layer. Then add some anhydrous calcium chloride to dry the crude nitrobenzene. Distill to purify.

Source

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Addition of the benzene

The mixture after the reflux

Washing the mixture

Distillation of the crude product

Drying the distilled product

 

The pure product

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