Patent ID: 7166740

Claim:
A process for preparing triiodotrimesic acid comprising reacting triiodomesitylene in an oxidation process with potassium or sodium permanganate in a mixture that consists of acetic acid anhydride, acetic acid and sulfuric acid at a temperature of 10 to 120° C. for 12 to 36 hours, and then isolating the obtained 1,3,5-triiodo-2,4-diacetoxymethylene-6-methylbenzene which is then treated with a base for 1.5 to 34 hours at a temperature of 60 to 100° C., then the reaction solution is neutralized and then it is treated with an aqueous potassium or sodium permanganate solution at a temperature of 60 to 100° C. for 1 to 24 hours in an oxidation process.