Paratoluidine

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Description

Transparent colorless crystals prepared by treating nitrotoluene with acetic acid in the presence of iron. Paratoluidine is used in the manufacture of some synthetic organic red colorants. Paratoluidine reds are sometimes used in inks but are not used as an artist colors because they bleed and fade with time.

Synonyms and Related Terms

p-toluidine; 4-aminotoluene; 4-amino-1-methylbenzene; p-methylaniline

Chemical structure

Paratoluidine.jpg


Other Properties

Soluble in alcohols, ether, acetone, carbon disulfide, oils, dilute acids. Slightly soluble in water.

Darkens on exposure to air.

Composition C6H4CH3NH2
CAS 106-49-0
Melting Point 44-45
Density 1.046
Molecular Weight mol. wt. = 107.2
Boiling Point 200-201

Hazards and Safety

Toxic by ingestion, inhalation and skin absorption.

Combustible. Flash point = 86C (188F)

International Chemical Safety Card

Sources Checked for Data in Record

  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9396
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9366
  • F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876

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