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Chemical compound From Wikipedia, the free encyclopedia
3-Aminophenol is an organic compound with formula C6H4(NH2)(OH). It is an aromatic amine and a phenol. It is the meta isomer of 2-aminophenol and 4-aminophenol.
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Names | |||
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Preferred IUPAC name
3-Aminophenol[2] | |||
Other names
m-Aminophenol meta-Aminophenol 3-Hydroxyaniline m-Hydroxyaniline meta-Hydroxyaniline | |||
Identifiers | |||
3D model (JSmol) |
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636059 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
ECHA InfoCard | 100.008.830 | ||
EC Number |
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2913 | |||
KEGG | |||
PubChem CID |
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RTECS number |
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UNII | |||
UN number | 2512 | ||
CompTox Dashboard (EPA) |
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Properties | |||
C6H7NO | |||
Molar mass | 109.128 g·mol−1 | ||
Appearance | White orthorhombic crystals | ||
Density | 1.195 g/cm3 | ||
Melting point | 120 to 124 °C (248 to 255 °F; 393 to 397 K) | ||
Boiling point | 164 °C (327 °F; 437 K) at 11 mmHg | ||
Acidity (pKa) |
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Hazards | |||
GHS labelling: | |||
Warning | |||
H302, H332, H411 | |||
P261, P264, P270, P271, P273, P301+P312, P304+P312, P304+P340, P312, P330, P391, P501 | |||
NFPA 704 (fire diamond) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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3-Aminophenol can be prepared by caustic fusion of 3-aminobenzenesulfonic acid (i.e. heating with NaOH to 245 °C for 6 hours)[4] or from resorcinol via a substitution reaction with ammonium hydroxide.[5]
One of the most relevant applications of the substance is the synthesis of 3-(diethylamino)phenol, key intermediate for the preparation of several fluorescent dyes (e.g., rhodamine B). Other uses for the compound include hair dye colorants and stabilizers for chlorine-containing thermoplastics.[4]
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