1-amino-7-naphthol
1-amino-7-naphthol
CAS: 118-46-7
Molecular Formula: C10H9NO
1-amino-7-naphthol - Names and Identifiers
| Name | 1-amino-7-naphthol |
| Synonyms | CYANOL 8-AMINO-2-NAPHTOL 1-amino-7-naphthol 8-AMINO-2-NAPHTHOL 8-Amino-2-naphthol 8-aminonaphthalen-2-ol 2-Naphthalenol, 8-aMino- 7-HYDROXY-1-NAPHTHYLAMINE 8-Amino-2-hydroxynaphthalene |
| CAS | 118-46-7 |
| EINECS | 204-252-4 |
| InChI | InChI=1/C10H9NO/c11-9-5-7-3-1-2-4-8(7)6-10(9)12/h1-6,12H,11H2 |
1-amino-7-naphthol - Physico-chemical Properties
| Molecular Formula | C10H9NO |
| Molar Mass | 159.18 |
| Density | 1.1202 (rough estimate) |
| Melting Point | 206-210°C(lit.) |
| Boling Point | 284.68°C (rough estimate) |
| Flash Point | 161.6°C |
| Water Solubility | slightly soluble |
| Solubility | soluble in Methanol |
| Vapor Presure | 3.52E-05mmHg at 25°C |
| Appearance | Grey-brown powder |
| Color | Gray to brown |
| pKa | pK1: 4.20(+1) (25°C) |
| Storage Condition | Room Temprature |
| Sensitive | Light Sensitive |
| Refractive Index | 1.6070 (estimate) |
| MDL | MFCD00004031 |
| Physical and Chemical Properties | colorless crystals. Melting point 158 ℃, can sublimate. Soluble in hot water and ethanol. The aqueous solution and ferric chloride appeared green blue. |
| Use | For the preparation of azo dyes. |
1-amino-7-naphthol - 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. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 2 |
| RTECS | QL3331000 |
| TSCA | Yes |
| HS Code | 29222990 |
1-amino-7-naphthol - Upstream Downstream Industry
| Raw Materials | 1-Naphthylamine-7-Sulfonic Acid |
1-amino-7-naphthol - Introduction
Easy to rise, soluble in hot water and ethanol, but also soluble in ether. It is blue fluorescent when dissolved in acid and alkali, and turns blue-green after interacting with ferric chloride.
Last Update：2022-10-16 17:12:27
1-amino-7-naphthol - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | used to make azo dyes. Used to prepare azo dyes The product can be acetylated to obtain 1-acetylamino-7-naphthol. Used to make neutral brown VRL, dark brown 5R, neutral black BRL and black BGL. 8-amino-2-naphthol can be obtained by acetylation 1-acetylamino-7-naphthol. Used to make neutral brown VRL, dark brown 5R, neutral black BRL and black BGL. |
| Production method | It is obtained by alkali melting and acidification of 1, 7-naphthalenesulfonic acid (1, 7-cliffic acid). |
| category | toxic substances |
| toxicity classification | poisoning |
| acute toxicity | vein-mouse LD50: 180 mg/kg |
| flammability hazard characteristics | combustible; combustion produces toxic nitrogen oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
Last Update：2024-04-10 22:29:15
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View History
1-amino-7-naphthol
1-(propylsulfanyl)propane
103918-73-6
L-Lysine (S)-hydroxybutanedioate
1-iodo-2-methoxy-benzen
生物素琥珀酰亚胺基酯
Morpholine, 3-methyl-, hydrochloride
2-chlorobenzoic acid,silver
1-(propylsulfanyl)propane
103918-73-6
L-Lysine (S)-hydroxybutanedioate
1-iodo-2-methoxy-benzen
生物素琥珀酰亚胺基酯
Morpholine, 3-methyl-, hydrochloride
2-chlorobenzoic acid,silver
Raw Materials for 1-amino-7-naphthol