A crystalline sulfonic acid H2NC6H4SO3H that is isomeric with sulfanilic acid, is made by sulfonating nitrobenzene and then reducing, and is used as an intermediate for azo dyes; meta amino benzenesulfonic acid.
Applications:
As an Intermediates of Dyes.
As an Intermediates of Optical Brightening Agent.
As a Raw – Material of MAP & DEMAP.
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