Sulphanilic acid

Sulphanilic acid is an organic compound with the chemical formula C6H7NO3S. It is a white, crystalline powder that is slightly soluble in water and ethanol. It is commonly used as an intermediate in the synthesis of dyes, pharmaceuticals, and other chemicals. It is also used as an analytical reagent in the determination of nitrite and primary amines. Additionally, it is used as a component of certain hair dyes and as a reagent in the measurement of blood glucose levels.