Sulphanilic acid by Research Lab Fine Chem Industries is a high grade reagent. Also known as 4-aminobenzenesulfonic acid, this organic compound is a derivative of aniline. The reagent is available as a powder which is soluble in water. It has a melting point of 288 C. Sulphanilic acid can be obtained by the sulfonation of aniline. While it is stable under general conditions, this reagent is incompatible with strong oxidizing agents. CAS No.: 121-57-3 Quantity Provided: 5 kg per bottle Molecular formula: NH2C6H4SO3H Molecular weight: 173.19 Assay: 98 Sulphanilic acid has a variety of applications in chemical and biological sectors. This reagent finds applications in the organic synthesis of various derivatives. Sulphanilic acid is utilized to make dyes and sulpha drugs. It is also employed for the quantitative analysis of nitrate and nitrite ions by diazonium coupling reaction with N-(1-Naphthyl)ethylenediamine, which results in an azo dye. Sulphanilic acid is also used as a standard in combustion analysis and in the Pauly reaction. This reagent is suitable for industrial synthesis of products and research applications.