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China and India are the leading exporters of sulfanilic acid (CAS 121-57-3), collectively accounting for the majority of global shipments, while the United States, Germany, and South Korea represent the largest importers. Sulfanilic acid prices have remained relatively stable amid steady demand from dye, pharmaceutical, and agrochemical manufacturers. Exports from China have slightly declined year-on-year since 2022, while Indian exports have expanded, reflecting a modest shift in production leadership within the top exporting countries.
Sulfanilic acid is a white to off-white crystalline solid at room temperature, odorless and non-volatile, with a high melting point of approximately 288 °C (decomposes). It is an aromatic organic compound classified as a sulfonic acid derivative of aniline and functions primarily as a chemical intermediate. Industrially, it serves as a key precursor in the synthesis of azo dyes and pigments, sulfa drugs, and other sulfonamide-based pharmaceuticals. Its principal application areas include dye manufacturing (especially for textiles and inks), pharmaceutical synthesis, and the production of certain agrochemical intermediates and corrosion inhibitors.
Manufacture various dyes & organic chemicals, as reagent in anal chemistry (ehrlich's reagent, determination of nitrites).
This chemical is included in Fine Chemicals. See more about what is Sulfanilic Acid and Sulfanilic Acid SDS information.
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