Studies on Hydroxamic Acids: Part VIII. Visual Titrations of Hydroxamic Acids in Non-Aqueous Media

Non-aqueous visual titrations of a wide variety of N-arylhydroxamic acids have been described using cinchophen (2-phenylcinchoninic acid) as a primary standard. The titrations are performed in dimethylformamide and pyridine media using potassium methoxide in benzene-methanol as a titrant and azo violet as an indicator.