| Identification | More | [Name]
1-Amino-7-naphthol | [CAS]
118-46-7 | [Synonyms]
1-AMINO-7-HYDROXYNAPHTHALENE
1-AMINO-7-NAPHTHOL
7-HYDROXY-1-NAPHTHYLAMINE
8-AMINO-2-NAPHTHOL
8-AMINO-2-NAPHTOL
CYANOL
SALOR-INT L157775-1EA
8-amino-2-naphthaleno
8-amino-2-Naphthalenol
8-amino-2-naphtho
8-Amino-2-napthol
AMINO-2-NAPHTHOL, 8-
8-Amino-2-naphtol 98%
1-AMINO-7-NAPHTHOLTECH.GRADE
8-Amino-2-hydroxynaphthalene
8-Amino-2-naphthelenol
8-Aminonaphthalen-2-ol
8-Aminonaphthalene-2-ol | [EINECS(EC#)]
204-252-4 | [Molecular Formula]
C10H9NO | [MDL Number]
MFCD00004031 | [Molecular Weight]
159.18 | [MOL File]
118-46-7.mol |
| Chemical Properties | Back Directory | [Appearance]
grey to grey-brown granular powder | [Melting point ]
206-210 °C(lit.)
| [Boiling point ]
284.68°C (rough estimate) | [density ]
1.1202 (rough estimate) | [refractive index ]
1.6070 (estimate) | [solubility ]
soluble in Methanol | [form ]
Powder or Crystals | [pka]
pK1: 4.20(+1) (25°C) | [color ]
Gray to brown | [Water Solubility ]
slightly soluble | [Sensitive ]
Light Sensitive | [CAS DataBase Reference]
118-46-7(CAS DataBase Reference) | [EPA Substance Registry System]
2-Naphthalenol, 8-amino- (118-46-7) |
| Safety Data | Back Directory | [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 .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection . | [WGK Germany ]
2
| [RTECS ]
QL3331000
| [TSCA ]
Yes | [HS Code ]
29222990 |
| Hazard Information | Back Directory | [Chemical Properties]
grey to grey-brown granular powder | [Uses]
Sulfonation gives 1-amino-7-hydroxynaphthalene-4-sulfonic acid. The N-acetyl derivative is an important coupling component for after-chrome and metal-complex dyes, e.g., C.I. Mordant Black 38 and C.I. Acid Black 60. | [Production Methods]
The sodium salt of 1-aminonaphthalene-7-sulfonic acid is added to 80 % potassium hydroxide at 210℃, and the reaction is completed by heating for 6 h at 230℃. After dilution and careful acidification with hydrochloric acid, the acid solution is screened to remove impurities and neutralized to precipitate 159 in 80 % yield (mp 207℃). |
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