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4-aminophenol

Product name 4-aminophenol
Synonyms p-hydroxyaniline
Paranol
Azol
Certinal
GOST no data
CAS 123-30-8

p-Aminophenol is a colorless crystalline solid. It is easily oxidizes on air coloring in deep brown tint.

Production.

In chemical industry p-aminophenol is derived from 4-nitrochlorobenzene. At the first stage chloride is substituted with phenolate group (NaOH, 170°C, 0.8MPa); then nitro group is reduced up to amino group (NaHS, 140°C, 0.5MPa) and finally after acidification resulting product is obtained:

Cl(C6H4)NO2 --> NaO(C6H4)NO2 --> NaO(C6H4)NH2 --> HO(C6H4)NH2

Uses.

  • p-Aminophenol is used in production of sulfur and azo dyes;
  • p-Aminophenol and it derivatives (metol, glycine and amidol) are photo developers;
  • rubber antioxidant;
  • the intermediate for paracetamol;

  • Manufacturer(s) JSC M.V. Frunze Zavolzhsky chemical plant
    Chemical structure of 4-aminophenol

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