CAS No.: | 123-30-8 |
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Formula: | C6h7no |
EINECS: | 204-616-2 |
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Identification | ||
Name | 4-Aminophenol | |
Synonyms | 4-Amino-1-hydroxybenzene; 4-Hydroxyaniline | |
Molecular Structure | ![]() |
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Molecular Formula | C6H7NO | |
Molecular Weight | 109.13 | |
CAS Registry Number | 123-30-8 | |
EINECS | 204-616-2 |
Properties | ||
Melting point | 188 ºC | |
Boiling point | 284 ºC | |
Flash point | 189 ºC | |
Water solubility | 1.5 g/100 mL (20 ºC) |
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.
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.