1-Hydroxy-4-naphthalenesulfonic acid
4-hydroxynaphthalene-1-sulphonic acid
CAS: 84-87-7
Molecular Formula: C10H8O4S
1-Hydroxy-4-naphthalenesulfonic acid - Names and Identifiers
| Name | 4-hydroxynaphthalene-1-sulphonic acid |
| Synonyms | NW acid Nevile-Winthers acid Nevileandwinther'sacid Nevileandwinther'sacid 1-NAPHTHOL-4-SULFONIC ACID 1-naphthol-4-sulfonic acid N-(M-SULFOPHENYL) GAMMA ACID N-(M-SULFOPHENYL) GAMMA ACID 4-hydroxy-1-naphthalenesulfonicaci 1-Hydroxy-4-naphthalenesulfonic acid 1-Naphthalenesulfonicacid,4-hydroxy- 4-hydroxynaphthalene-1-sulfonic acid 4-Hydroxy-1-naphthalenesulfonic acid 4-hydroxynaphthalene-1-sulphonicacid 4-hydroxynaphthalene-1-sulphonic acid 4-h ydroxynaphthalene-1-sulphonicacid |
| CAS | 84-87-7 |
| EINECS | 201-568-4 |
| InChI | InChI=1/C10H8O4S/c11-9-5-6-10(15(12,13)14)8-4-2-1-3-7(8)9/h1-6,11H,(H,12,13,14) |
1-Hydroxy-4-naphthalenesulfonic acid - Physico-chemical Properties
| Molecular Formula | C10H8O4S |
| Molar Mass | 224.23 |
| Density | 1.4643 (rough estimate) |
| Melting Point | 170℃ |
| Boling Point | 335.63°C (rough estimate) |
| pKa | 0.73±0.40(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.7040 (estimate) |
| Physical and Chemical Properties | Off-white crystalline powder. Melting point 170 °c (decomposition). Soluble in water. |
| Use | For the preparation of azo dyes |
1-Hydroxy-4-naphthalenesulfonic acid - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | used as an intermediate for azo dyes, for the preparation of direct Copper Blue BR and 2R, direct Violet RB, dyes such as acid red B and acid medium jujube B This product is an intermediate of azo dyes, which is used to manufacture dyes such as direct copper salt blue BR, direct ketone salt blue 2R, acid red B, acid medium jujube B, etc. for the preparation of azo dyes |
| production method | from 1, 4-aminonaphthalene sodium sulfonate by addition, hydrolysis, acid analysis. Raw material consumption quota: 1, 4-aminonaphthalene sodium sulfonate (≥ 65%)1200kg/t, sodium bisulfite (≥ 64%)1200kg/t, liquid alkali (40%)1050kg/t, hydrochloric acid (industrial) 452kg/t. |
Last Update：2024-04-09 02:00:12
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