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p-toluidine

Product name p-toluidine
Synonyms 4-aminotoluene
p-methylaniline
1-amino-4-methylbenzene
GOST no data
CAS 106-49-0

p-Toluidine is a colorless solid. Ortho- and meta toluidines are liquid. Crystalline structure for p-toluidine at room temperature and pressure can be explained by the fact that its molecule are more symmetrical than molecules of other isomers. p-Toluidine tend to darken on storage on air and light. It is readily soluble in diethyl ether, ethanol, acetone, chloroform and most organic solvents. It is poorly soluble in water (0.74% by mass at 20°C) but dissolves in acidic aqueous solution. It can be distillated with steam. p-Toluidine show conventional aromatic amine properties. It is a weak basic compound, able to form salts, can be diazotated. Electrophilic substitution occurs into ortho-position with regard to amino-group. p-Toluidine is toxic if inhaled, ingested, or absorbed through the skin. It is suspected human carcinogen.

Production.

  • as by-product in the fractional distillation of coal tar;
  • by hydrogenation of p-nitrotoluene on nickel, palladium or copper catalysts;

    Uses.

  • as an intermediate compound in making azo, sulfide and triphenylmethane dyes;
  • as a starting material for preparation of aminotoluenesulfonic acids;
  • as an component of corrosion inhibitory compositions;
  • in the production of antioxidants, agricultural, pharmaceutical and rubber chemicals.
  • as a component of accelerators for cyanoacrylate glues;

  • Manufacturer(s) JSC M.V. Frunze Zavolzhsky chemical plant
    OJSC Pigment
    Chemical structure of p-toluidine

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