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Light tan powder used as an Insecticide, Fungicide and Bactericide for vinyls, paints, and enamels. Folpet was first patented to Standard Oil in 1951. It is used to control cocroaches, termites, flies, and ants.

Synonyms and Related Terms

phaltan; N-(trichloromethylthio)phthalimide; 2-{(trichloromethyl)thio}-1H-isoindole-1,3(2H)-dione; Acryptan; Folpan; Folpel; Phaltan; Phaltane; Thiophal; Vinicoll


  • Toxic by ingestion.
  • Skin contact may cause irritation.
  • Combustible.
  • ChemBlink : SDS

Physical and Chemical Properties

Slightly soluble in organic solvents. Insoluble in water.

Composition C6H4(CO)2NSCCl3
CAS 133-07-3
Melting Point 177 C
Molecular Weight mol. wt. = 296.56

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4255