| Identification | More | [Name]
5-Amino-1-naphthol | [CAS]
83-55-6 | [Synonyms]
1-AMINO-5-HYDROXYNAPHTHALENE
1-AMINO-5-NAPHTHOL
5-AMINO-1-NAPHTHOL
5-HYDROXY-1-NAPHTHYLAMINE
LABOTEST-BB LT00080649
1-Naphthalenol, 5-amino-
1-Naphthol, 5-amino-
5-amino-1-naphthaleno
5-Amino-alpha-naphthol
C.I. 76650
5-aminonaphthalen-1-ol
5-Amino-1-naphthol, pract., 96%
5-AMINO-1-NAPHTHOL 96%
5-Aminonaphthalene-1-ol | [EINECS(EC#)]
201-486-9 | [Molecular Formula]
C10H9NO | [MDL Number]
MFCD00041826 | [Molecular Weight]
159.18 | [MOL File]
83-55-6.mol |
| Chemical Properties | Back Directory | [Appearance]
pale purple to brown-purple crystalline powder | [Melting point ]
190 °C (dec.) (lit.) | [Boiling point ]
284.68°C (rough estimate) | [density ]
1.1202 (rough estimate) | [refractive index ]
1.6070 (estimate) | [storage temp. ]
-20°C Freezer | [solubility ]
DMSO (Slightly), Methanol (Slightly) | [form ]
Solid | [pka]
3.97(at 25℃) | [color ]
Light Purple to Purple | [InChI]
InChI=1S/C10H9NO/c11-9-5-1-4-8-7(9)3-2-6-10(8)12/h1-6,12H,11H2 | [InChIKey]
ZBIBQNVRTVLOHQ-UHFFFAOYSA-N | [SMILES]
C1(O)=C2C(C(N)=CC=C2)=CC=C1 | [CAS DataBase Reference]
83-55-6(CAS DataBase Reference) | [NIST Chemistry Reference]
5-Amino-1-naphthol(83-55-6) | [EPA Substance Registry System]
83-55-6(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS07 | [Signal word ]
Warning | [Hazard statements ]
H315-H319-H335 | [Precautionary statements ]
P261-P264-P271-P280-P302+P352-P305+P351+P338 | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S37/39:Wear suitable gloves and eye/face protection . | [WGK Germany ]
3
| [TSCA ]
TSCA listed | [HS Code ]
29222990 | [Storage Class]
11 - Combustible Solids | [Hazard Classifications]
Eye Irrit. 2
Skin Irrit. 2
STOT SE 3 |
| Hazard Information | Back Directory | [Chemical Properties]
pale purple to brown-purple crystalline powder | [Uses]
5-Amino-1-naphthol is used as a coupling component for azo dyes (coupling takes place ortho to the amino or hydroxyl group, or para to the hydroxyl group depending on the pH), and as an intermediate for sulfur dyes. | [Preparation]
1-Aminonaphthalene-5-sulfonic acid paste (Section 6.2) is added to molten sodium hydroxide at 200°C, and the reaction is completed by heating slowly to 250°C and maintaining this temperature for 3 h. After dilution and careful neutralization with hydrochloric acid, 5-amino-1-naphthol precipitates in 85 % yield (mp 192°C). |
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