2-Aminophenol

2-Aminophenol is an organic compound with the formula C6H7NO. Along with its isomer 4-aminophenol, it is an amphoteric molecule and a reducing agent. It is a useful reagent for the synthesis of dyes and heterocyclic compounds. Reflecting its slight hydrophilic character, white powder is moderately soluble in alcohols and can be recrystallized from hot water.

2-Aminophenol
Names
Preferred IUPAC name
2-Aminophenol
Other names
o-Aminophenol
ortho-Aminophenol
2-Hydroxyaniline
2-Amino-1-hydroxybenzene
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.002.211
EC Number
  • 202-431-1
KEGG
PubChem CID
RTECS number
  • SJ4950000
UNII
UN number 2512
  • InChI=1S/C6H7NO/c7-5-3-1-2-4-6(5)8/h1-4,8H,7H2 Y
    Key: CDAWCLOXVUBKRW-UHFFFAOYSA-N Y
  • InChI=1/C6H7NO/c7-5-3-1-2-4-6(5)8/h1-4,8H,7H2
    Key: CDAWCLOXVUBKRW-UHFFFAOYAP
SMILES
  • Oc1ccccc1N
Properties
C6H7NO
Molar mass 109.13 g/mol
Appearance White orthorhombic pyramidal needles
Density 1.328 g/cm3
Melting point 174 °C (345 °F; 447 K)
slightly soluble in cold water, soluble in hot water
Acidity (pKa)
  • 4.78 (amino; 20 °C, H2O)
  • 9.97 (phenol; 20 °C, H2O)
Hazards
GHS labelling:
Warning
H302, H332, H341
P201, P202, P261, P264, P270, P271, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P330, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references
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