|
|
| | 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID Basic information |
| Product Name: | 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID | | Synonyms: | M ACID;1-AMINO-5-NAPHTHOL-7-SULFONIC ACID;5-AMINO-1-NAPHTHOL-3-SULFONIC ACID;8-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID;8-amino-4-hydroxynaphthalene-2-sulphonic acid;8-amino-4-hydroxynaphthalene-2-sulfonic acid;8-azanyl-4-hydroxy-naphthalene-2-sulfonic acid;8-Amino-4-hydroxy-2-naphthalenesulfonic Acid
M Acid | | CAS: | 489-78-1 | | MF: | C10H9NO4S | | MW: | 239.25 | | EINECS: | 207-700-7 | | Product Categories: | Intermediates of Dyes and Pigments | | Mol File: | 489-78-1.mol |  |
| | 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID Chemical Properties |
| density | 1.627±0.06 g/cm3(Predicted) | | pka | -0.35±0.40(Predicted) | | form | powder to crystal | | color | White to Amber to Dark purple | | CAS DataBase Reference | 489-78-1(CAS DataBase Reference) |
| | 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID Usage And Synthesis |
| Chemical Properties | 1-Amino-5-hydroxynaphthalene-7-sulfonic acid [489-78-1]. (8-amino-4-hydroxynaphthalene-2-sulfonic acid), M acid, C10H9NO4S, Mr 239.2, and its sodium salt are sparingly soluble in water. Coupling with diazo compounds takes place under acidic and alkaline conditions, but a bisazo derivative cannot be obtained. Reaction with bisulfite gives 4,8-dihydroxynaphthalene-2-sulfonic acid. | | Production Methods | 1-Aminonaphthalene-5,7-disulfonic acid is heated with concentrated sodium hydroxide for 16 h at 172 – 176℃. After the reaction mixture is quenched, acidified, and purged of sulfur dioxide, the product is isolated in 80 % yield. |
| | 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID Preparation Products And Raw materials |
|