2-naphthylamine-1-sulfonic acid / Tobias acid / 2-aminonaphthalene-1-sulfonic acid / 2-amino-1-naphthalenesulfonic acid / debias acid / Thursonic acid / 2-Naphthylamine 1-sulfonic aci

2-Naphthylamine-1-sulfonic acid is primarily used in the manufacturing of dyes and pigments. It is often used as an intermediate in the synthesis of various azo dyes, acid dyes, and direct dyes. The sulfonic acid group (-SO3H) in the molecule allows for water solubility and enhances the dyeing properties of the final products.

English name: 2-Naphthylamine-1-sulfonic acid; 2-Amino-1-naphthalenesulfonic acid; Tobias acid

Other names: Tobias acid; 2-aminonaphthalene-1-sulfonic acid; 2-amino-1-naphthalenesulfonic acid; debias acid; tonic acid

CAS number: 81-16-3

C10H9NO3S = 223.25

Level: AR

Content: ≥98.0%

Residue on ignition: ≤0.1%

Properties: The crystals in hot water are colorless transparent flake crystals, and the crystals in cold water are white needle-shaped water-containing crystals. It is soluble in hot water, slightly soluble in cold water, and very slightly soluble in ethanol and ether. Uses: biochemical research. Organic Synthesis. It is an azo dye intermediate, used to manufacture J acid and γ acid, Naphthol AS-SW, Reactive Red K-1613, Organic Violet Red, Lisol Violet and Lisol Red
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