Methane → 4-Sulfobenzenediazonium hydroxide

Participants

Reaction Steps

A pin pelletizer was charged with 42.4 g of sulfanilic acid and with 200 g of a carbon black having a CTAB surface area of 350 m2 /g and a DBPA of 120 ml/100 g. After mixing for 30 seconds, a solution of 17.4 g NaNO2 in 150 g of boiling water was added and the mixture was pelletized for 45 seconds. 4-Sulfobenzenediazonium hydroxide inner salt is formed, which reacts with the carbon black. The product, which was then at 35° C. was dried in an oven at 120° C. The product had a 325 mesh residue of 0.2%, compared to 97% for the unreacted carbon black. The product has attached p--C6H4SO3- groups.

Provenance & Evidence