Ecological Assessment of Storm Impacts

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Data Collection

Captan

CAS Number: 133-06-2

Basic Information

The chemical structure of Captan Synonym(s): Americide; bangton; Bonide Captan 50%WP; captab; Captaf; captaf 85w; Captol; Catanex; Dangard; essofungicide 406; flit 406; fungus ban type ii; Glyodex 3722
Formula: C9H8Cl3NO2S
 Molecular Weight: 300.587
 Melting Point (°C): 178
 Contaminant Type: Captan is a fungicide.

Solubility (in water)

  • Solubility: < 5 mg/l e
    Temperature (°C): 20

Half-Life (in soil unless otherwise noted)

  • t1/2: 2-60 days f
    Environment: Scientific judgement based upon unacclimated (low) and acclimated (high) soil grab sample data

Toxicity Effects

  • Organism Type: Fish e
    Common Name: Carp
     Scientific Name: Cyprinus carpio
     Toxicity: 0.25 mg/l
     Test: 48h LC50
  • Organism Type: Fish g
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 0.047-0.111 mg/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 0.066-0.080 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 0.23 mg/l
     Test: 24h LC10,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 0.46 mg/l
     Test: 24h LC50,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 0.14 mg/l
     Test: 48h LC10,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 0.33 mg/l
     Test: 48h LC50,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 0.3 mg/l
     Test: 96h LC50,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 0.2 mg/l
     Test: 96h LC50,F extrap
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: >5000 mg/kg
     Test: LD50
     Formulation: Captan 50 Wettable Powder
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: 9000 mg/kg
     Test: LD50

Octanol-Water Partition Coefficients

  • Log Kow: 2.35 e

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.
g Meister, R. T., and C. Sine (Ed). 2003. Crop Protection Handbook, volume 89. Meister Publishing Company, Willoughby, OH.