1,2-Naphthoxydiazo-4-sulfonic acid
1,2-Naphthoxydiazo-4-sulfonic acid
CAS: 887-76-3
Molecular Formula: C10H8N2O4S
1,2-Naphthoxydiazo-4-sulfonic acid - Names and Identifiers
| Name | 1,2-Naphthoxydiazo-4-sulfonic acid |
| Synonyms | 1-Diazo-2-Naphthol-4-Sulfonic Acid 1,2-Naphthoxydiazo-4-sulfonic acid 4,4-azo-3-hydroxynaphthalene-1-sulfonate 4-Diazonio-3-hydroxynaphthalene-1-sulfonate 2-Hydroxy-4-sulfo-1-naphthalenediazonium hydroxide, inner salt |
| CAS | 887-76-3 |
| EINECS | 212-958-9 |
| InChI | InChI=1/C10H8N2O4S/c11-12-10-7-4-2-1-3-6(7)9(5-8(10)13)17(14,15)16/h1-5,8,13H,(H,14,15,16) |
1,2-Naphthoxydiazo-4-sulfonic acid - Physico-chemical Properties
| Molecular Formula | C10H8N2O4S |
| Molar Mass | 252.247 |
| Density | 1.5366 (rough estimate) |
| Melting Point | 160℃ |
| Boling Point | 160 C |
| Water Solubility | 15.8 g/L (20℃) |
| Appearance | Morphological powder |
| Storage Condition | Flammables area |
| Refractive Index | 1.6800 (estimate) |
| Physical and Chemical Properties | Yellow needle-like crystal or paste. flash point is slightly soluble in water and soluble in alkali. |
| Use | Used as acid dyes, intermediate medium dye |
1,2-Naphthoxydiazo-4-sulfonic acid - Risk and Safety
| Hazard Symbols | F - Flammable C - Corrosive  |
| Risk Codes | R11 - Highly Flammable R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2925 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29270000 |
| Hazard Class | 4.1 |
| Packing Group | III |
1,2-Naphthoxydiazo-4-sulfonic acid - Upstream Downstream Industry
1,2-Naphthoxydiazo-4-sulfonic acid - Production method
1-amino -2-naphthol -4-sulfonic acid (1,2,4-acid) is dissolved in caustic soda, then acidified into suspension with acid, diazotized with sodium nitrite, and a small amount of copper sulfate is added Catalyzed by the solution, the diazonium oxide is precipitated from the solution in the state of free acid or sodium salt, filtered, acidified with sulfuric acid, and.
Last Update：2024-04-10 22:29:15
1,2-Naphthoxydiazo-4-sulfonic acid - Nature
| EPA chemical information | 1-Naphthalenediazonium, 2-hydroxy-4-sulfo-, inner salt (887-76-3) |
Last Update：2024-04-09 20:49:11
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View History
Raw Materials for 1,2-Naphthoxydiazo-4-sulfonic acid
Sodium hydroxide
Sulfuric acid
Copper(II) sulfate
Sodium metabisulfite
2-Naphthol
NITRIC OXIDE
(2S)-1-(3-Acetylthio-2-methyl-1-oxopropyl)-L-proline
Sulfuric acid
Copper(II) sulfate
Sodium metabisulfite
2-Naphthol
NITRIC OXIDE
(2S)-1-(3-Acetylthio-2-methyl-1-oxopropyl)-L-proline
Downstream Products for 1,2-Naphthoxydiazo-4-sulfonic acid