4-Aminophenol [123-30-8]

Identification
Name		4-Aminophenol
Synonyms		4-Amino-1-hydroxybenzene; 4-Hydroxyaniline
Molecular Structure
Molecular Formula		C6H7NO
Molecular Weight		109.13
CAS Registry Number		123-30-8
EINECS		204-616-2

4-Aminophenol (or para-aminophenol or p-aminophenol) is the organic compound with the formula H₂NC₆H₄OH. Typically available as a white powder, it was commonly used as a developer for black-and-white film, marketed under the name Rodinal.

Reflecting its slightly hydrophilic character, the white powder is moderately soluble in alcohols and can be recrystallized from hot water. In the presence of a base, it oxidizes readily. The methylatedderivatives N-methylaminophenol and N,N-dimethylaminophenol are of commercial value.
 

Uses

4-Aminophenol is a building block used in organic chemistry. Prominently, it is the final intermediate in the industrial synthesis of paracetamol. Treating 4-aminophenol with acetic anhydride gives paracetamol.

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