kyselina1-amino-8-naftol-3,6-disulfonova
4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid
CAS: 90-20-0
Molecular Formula: C10H9NO7S2
kyselina1-amino-8-naftol-3,6-disulfonova - Names and Identifiers
| Name | 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid |
| Synonyms | H Acid H-Acid c.i.35570 C.I. 35570 1-Naphthol-8-amino-3,6-disulfonicacid 1-AMINO-8-NAPHTHOL-3,6-DISULFONIC ACID 1-Naphthol-8-amino-3,6-disulfonic acid kyselina1-amino-8-naftol-3,6-disulfonova 4-amino-5-hydroxy-7-naphthalenedisulfonicacid 4-AMINO-5-HYDROXY-2,7-NAPTHALENEDISULFONIC ACID 7-Naphthalenedisulfonicacid,4-amino-5-hydroxy-2 4-AMINO-5-HYDROXY-2,7-NAPHTHALENEDISULFONIC ACID 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid 1-Amino-8-Hydroxynaphthalene-3,6-Disulphonic Acid |
| CAS | 90-20-0 |
| EINECS | 201-975-7 |
| InChI | InChI=1/C10H9NO7S2/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8/h1-4,12H,11H2,(H,13,14,15)(H,16,17,18) |
kyselina1-amino-8-naftol-3,6-disulfonova - Physico-chemical Properties
| Molecular Formula | C10H9NO7S2 |
| Molar Mass | 319.31 |
| Density | 1.6832 (rough estimate) |
| Melting Point | >300°C(lit.) |
| pKa | -0.95±0.40(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.7640 (estimate) |
| Physical and Chemical Properties | Pure product is colorless crystals, slightly soluble in cold water, soluble in alkali and alkali solution such as caustic soda. And ferric chloride solution was brown red. The acid salt has red fluorescence with microstrip blue, and changes to red-purple color after adding alkali. |
| Use | It is an important intermediate for the manufacture of azo dyes. |
kyselina1-amino-8-naftol-3,6-disulfonova - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
kyselina1-amino-8-naftol-3,6-disulfonova - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | is an important intermediate in the manufacture of azo dyes |
| category | toxic substances |
| toxicity grade | low toxicity |
| Acute toxicity | Reference range: oral-rat LD50: 6210 mg/kg |
| stimulation data | eyes-rabbits 500 mg/24 h mild |
| flammability hazard characteristics | flammability; Toxic nitrogen oxide and sulfur oxide fumes from combustion |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
Last Update：2024-04-10 22:29:15
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