Ecological Assessment of Storm Impacts

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Data Collection

Fonofos

CAS Number: 944-22-9

Basic Information

The chemical structure of Fonofos Synonym(s): O-ethyl S-phenyl ethylphosphonodithioate; O-Ethyl S-phenyl ethylphosphonothiolothionate; Diphonate; Dyfonate; Dyfonate II; Dyfonate(R); ethylphosphonodithioic acid O-ethyl S-phenyl ester
Formula: C10H15OPS2
 Molecular Weight: 246.322
 Boiling Point (°C): 130 (.1mm Hg)
 Melting Point (°C): 32
 Contaminant Type: Fonofos is an insecticide.
Notes: Light yellow liquid, soil insecticide.

Solubility (in water)

  • Solubility: 13 mg/l e
    Temperature (°C): 20

Toxicity Effects

  • Organism Type: Fish e
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 0.045 mg/l
     Test: 24h LC50
  • Organism Type: Fish e
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 0.11 mg/l
     Test: 24h LC50
  • Organism Type: Fish e
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 0.05 mg/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 0.05 mg/l
     Test: 96h LC50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: 8-17.5 mg/kg
     Test: LD50

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

e Verschueren, K. 1996. Handbook of Environmental Data on Organic Chemicals, 3rd edition. John Wiley & Sons, Inc., New York.
g Meister, R. T., and C. Sine (Ed). 2003. Crop Protection Handbook, volume 89. Meister Publishing Company, Willoughby, OH.