METANILIC ACID SODIUM SALT Cas 1126-34-7

Dye Industry: Key diazo intermediate for azo dyes; the amino group undergoes diazotization to form a diazonium salt, which is then coupled with naphthols or aniline derivatives to produce acid dyes, direct dyes, reactive dyes, and water-soluble mordant dyes.
Raw Material for Fluorescent Whitening Agents: Serves as an aromatic amine monomer for condensation reactions to produce water-soluble stilbene-based fluorescent whitening agents, used in laundry detergents, papermaking, and whitening systems for cotton fabrics.
Textile Printing and Dyeing Auxiliaries: Enhances the uniform dispersion of acid dyes on silk and wool fibers, reducing uneven dyeing (color blotchiness); acts as a penetration aid during fabric pretreatment to improve dye penetration.
Pesticide Intermediates: Used to prepare the aromatic sulfonate backbone for water-soluble fungicides and herbicides.
Raw Materials for Water Treatment Auxiliaries: Used in the synthesis of anionic dispersants and intermediates for scale and corrosion inhibitors.
Leather Chemicals: Raw materials for the synthesis of water-soluble leather dyes and leather leveling agents.