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Molecular formula : CAS :
nature : also known as 2-naphthol-3-carboxylic acid, or 2,3-acid. Pale yellow needle or lamellae. The temperature of 222 ° C to 223. Soluble in ethanol, ethyl ether, benzene, chloroform and alkali solution. Do not dissolve in water. By 2-naphthol and caustic soda produced by the reaction of 2-naphthol sodium, and with carboxyl carbon dioxide reaction, generating 2-hydroxy-3-carboxylic acid-sodium, reuse and sulfuric acid, the acid in the system. The system is mainly used for the naphthol AS and other types of color phenol intermediates. Also available for medicine, paint, organic pigment intermediates. There determination of zirconium and thorium and reagents in aluminum and iron complexes indicator.
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