Structural Formula Vector Image
Title: o-Aminophenol
CAS Registry Number: 95-55-6
CAS Name: 2-Aminophenol
Additional Names: 2-amino-1-hydroxybenzene; 2-hydroxyaniline
Molecular Formula: C6H7NO
Molecular Weight: 109.13
Percent Composition: C 66.04%, H 6.47%, N 12.83%, O 14.66%
Literature References: Manuf by reduction of o-nitrophenol: Freifelder, Robinson, US 3079435 (1963 to Abbott).
Properties: Crystals, rapidly becoming brown, mp 170-174°; sublimes. One gram dissolves in 50 ml cold water, 23 ml alcohol; freely soluble in ether, very slightly in benzene. Keep tightly closed and protected from light.
Melting point: mp 170-174°
Derivative Type: Hydrochloride
Molecular Formula: C6H7NO.HCl
Molecular Weight: 145.59
Percent Composition: C 49.50%, H 5.54%, N 9.62%, O 10.99%, Cl 24.35%
Properties: Crystals readily becoming gray on exposure to light. Freely sol in water or alcohol.
Use: Manuf azo and sulfur dyes; dyeing furs and hair. Hydrochloride used in dyeing fur, hair, leather, etc.

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