Ecological Assessment of Storm Impacts

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Data Collection

Disulfoton

CAS Number: 298-04-4

Basic Information

The chemical structure of Disulfoton Synonym(s): O,O-diethyl S-(2-(ethylthio)ethyl) phosphorodithioate; Disulfoton+; Di-Syston; Disyston(R); Disystox; Dithiodemeton; Dithiosystox; Rigo Insyst-D
Formula: C8H19O2PS3
 Molecular Weight: 274.391
 Boiling Point (°C): 62 (0.01mm Hg)
 Melting Point (°C): 108
 Contaminant Type: Disulfoton is an insecticide.

Solubility (in water)

  • Solubility: 25 mg/l e
    Formulation: Pure
  • Solubility: 12 mg/l c
    Formulation: DiSyston 15% G

Half-Life (in soil unless otherwise noted)

  • t1/2: 3-21 days f
    Environment: Scientific judgement based upon aerobic soil field data and reported half-lives for soil

Toxicity Effects

  • Organism Type: Crustaceans e
    Scientific Name: Gammarus fasciatus
     Toxicity: 21 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus lacustris
     Toxicity: 52 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Common Name: Mississippi grass shrimp
     Scientific Name: Palaemonetes kadiakensis
     Toxicity: 38 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Carp
     Scientific Name: Cyprinus carpio
     Toxicity: 3.4 mg/l
     Test: 48h LC50
  • Organism Type: Fish e
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 63 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 3.7 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 4 mg/l
     Test: 96h LC50
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Male
     Toxicity: 52 mg/kg
     Test: LD50
     Formulation: Di-Syston 15% G
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Female
     Toxicity: 14 mg/kg
     Test: LD50
     Formulation: Di-Syston 15% G
  • Organism Type: Molluscs e
    Common Name: Eastern oyster
     Scientific Name: Crassostrea virginica
     Life Stage: Larval
     Toxicity: 3.7 mg/l
     Test: 14d LC50,S
  • Organism Type: Molluscs e
    Common Name: Eastern oyster
     Scientific Name: Crassostrea virginica
     Life Stage: Egg
     Toxicity: 5.9 mg/l
     Test: 48h LC50,S
  • Organism Type: Molluscs e
    Common Name: Northern quahog
     Scientific Name: Mercenaria mercenaria
     Life Stage: Larval
     Toxicity: 1.4 mg/l
     Test: 12d LC50,S
  • Organism Type: Molluscs e
    Common Name: Northern quahog
     Scientific Name: Mercenaria mercenaria
     Life Stage: Egg
     Toxicity: 55 mg/l
     Test: 48h LC50,S

Resource Map: Click below to open in a new window to view or print.
Potential applications of this contaminant in the St. Johns Water River Management District

Work Cited

c C&P Press. 2002. EPR Professional Annual CD. Crop Protection Reference. Chemical and Pharmacuetical Press, Inc., New York, NY.
e Verschueren, K. 1996. Handbook of Environmental Data on Organic Chemicals, 3rd edition. John Wiley & Sons, Inc., New York.
f Howard, P. H., R. S. Boethling, W. F. Jarvis, W. M. Meylan, and E. M. Michalenko. 1991. Handbook of Environmental Degradation Rates. Lewis Publishers., Chelsea, MI.