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2-Amino-5-naphthol-7-sulfonic acid, also known as “J acid,” is an organic compound with the chemical formula C10H10NO3S. It is a sulfonic acid derivative of 2-amino-5-naphthol and is used as a dye intermediate. It is used to produce a variety of dyes, pigments, and other colorants for a wide range of applications such as textile, leather, and paper industries. J acid is known for its excellent light fastness and high tinting strength.
| Product Characteristics | Product Detail |
|---|---|
| CAS No | 87-02-5 |
| Formula | C10H9NO4S |
| Molecular Weight | 239.25 |
| Synonyms | 2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-;7-amino-4-hydroxynaphthalene-2-sulfonic acid;Kyselina 2-amino-5-naftol-7-sulfonova;Kyselina 6-amino-1-naftol-3-sulfonova;2-Amino-5-naphthol-7-sulfonic acid;Aminonaphthol sulfonic acid J;Isogamma acid;BRN 2217192;CCRIS 8989;NSC 31510;Kyselina I; |
| EINECS | 201-718-9 |
| Density | 1.627 g/cm3 |
| Solubility | Soluble in hot water, soda ash and caustic soda |
| Appearance | White needle crystal |