Ecological Assessment of Storm Impacts

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Data Collection

Endosulfan

CAS Number: 115-29-7

Basic Information

The chemical structure of Endosulfan Synonym(s): Benzoepin; Beosit; BIO 5462; Bio 5,642; Crisulfan; Cyclodan; Devisulfan; Endocel; Endosol; Endosulfan 35EC; Thiodan; Thiofor; Thiosulfan
Formula: C9H6Cl6O3S
 Molecular Weight: 406.923
 Melting Point (°C): 106
 Contaminant Type: Endosulfan is an insecticide.
Notes: Solid. Tan or white crystals

Half-Life (in soil unless otherwise noted)

  • t1/2: 0.1875-9.4 days f
    Temperature (°C): 25
     pH Value: 7-9
     Notes: scientific judgement based upon aqueous hydrolysis half-lives for alpha- and beta- endosulfan pH 7 (low t 1/2 = 4.5h) and 9 (high t 1/2 = 218 h) and 25C, respectively

Toxicity Effects

  • Organism Type: Crustaceans e
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: 240 µg/l
     Test: 24h LC50
  • Organism Type: Crustaceans e
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: 60 µg/l
     Test: 48h LC50
  • Organism Type: Crustaceans e
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: 52.9 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus fasciatus
     Toxicity: 5.8 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Common Name: Migrant prawn, oriental shrimp
     Scientific Name: Palaemon macrodactylus
     Toxicity: 1.8-6.5 µg/l
     Test: 96h LC50,F
  • Organism Type: Crustaceans e
    Common Name: Migrant prawn, oriental shrimp
     Scientific Name: Palaemon macrodactylus
     Toxicity: 8.4-39.8 µg/l
     Test: 96h LC50,S
  • Organism Type: Crustaceans u
    Common Name: Daggerblade grass shrimp
     Scientific Name: Palaemonetes pugio
     Life Stage: Larval
     Toxicity: 2.56 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans u
    Common Name: Daggerblade grass shrimp
     Scientific Name: Palaemonetes pugio
     Life Stage: Embryo
     Toxicity: 117 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans u
    Common Name: Daggerblade grass shrimp
     Scientific Name: Palaemonetes pugio
     Life Stage: Adult
     Toxicity: 1.01 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Common Name: Red-swamp crayfish
     Scientific Name: Procambarus clarkii
     Toxicity: 24-423 µg/l
     Test: 4d LC50
  • Organism Type: Crustaceans e
    Scientific Name: Pteronarcys (Genus)
     Toxicity: 2.3 µg/l
     Test: 48h LC50
  • Organism Type: Fish e
    Scientific Name: Barilius bendelisis
     Toxicity: 156 µg/l
     Test: LC50
  • Organism Type: Fish e
    Common Name: White sucker
     Scientific Name: Catostomus commersoni
     Toxicity: 3.0 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Smooth-breasted snakefish
     Scientific Name: Channa gachua
     Toxicity: 2.2 µg/l
     Test: EC, enzymes
     Notes: 15d enzymes effects
  • Organism Type: Fish e
    Common Name: Green snakehead
     Scientific Name: Channa punctatus
     Toxicity: 0.24-0.72 µg/l
     Test: EC, reproduction
     Notes: 120d reproductive effects
  • Organism Type: Fish e
    Common Name: Striped gourami
     Scientific Name: Colisa fasciata
     Toxicity: 1 mg/l
     Test: EC hystology
     Notes: 30d histology effects
  • Organism Type: Fish e
    Common Name: Sheepshead minnow
     Scientific Name: Cyprinodon variegatus
     Toxicity: 0.95 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Sheepshead minnow
     Scientific Name: Cyprinodon variegatus
     Toxicity: 1.4 µg/l
     Test: MATC
     Notes: early life stages
  • Organism Type: Fish e
    Common Name: Mosquitofish
     Scientific Name: Gambusia affinis
     Toxicity: 1.3 µg/l
     Test: 4d LC50
  • Organism Type: Fish e
    Common Name: Pinfish
     Scientific Name: Lagodon rhomboides
    Toxicity: 0.30 µg/l
     Test: 96h LC50,F
  • Organism Type: Fish e
    Common Name: Spot
     Scientific Name: Leiostomus xanthurus
     Toxicity: 0.09 µg/l
     Test: 96h LC50,F
  • Organism Type: Fish e
    Common Name: Inland silverside, tidewater silverside
     Scientific Name: Menidia beryllina
     Toxicity: 1.0-5.0 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Inland silverside, tidewater silverside
     Scientific Name: Menidia beryllina
     Toxicity: 0.2-0.5 µg/l
     Test: MATC Life Cycle
  • Organism Type: Fish e
    Common Name: Striped mullet
     Scientific Name: Mugil cephalus
     Toxicity: 0.38 µg/l
     Test: 96h LC50,F
  • Organism Type: Fish e
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 0.86 µg/l
     Test: LC50,F
  • Organism Type: Fish e
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 0.20 µg/l
     Test: MATC,F
  • Organism Type: Fish e
    Common Name: Columbia River redband trout
     Scientific Name: Salmo gairdneri
     Toxicity: 0.3 µg/l
     Test: 96h LC50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Male
     Toxicity: 160 mg/kg
     Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Female
     Toxicity: 22.7 mg/kg
     Test: LD50

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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.
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.
u Key, P. B., K. W. Chung, A. D. Opatkiewicz, E. F. Wirth, and M. H. Fulton. 2003. Toxicity of the insecticides fipronil and endosulfan to selected life stages of the grass shrimp (Palaemonetes pugio). Bulletin of Environmental Contamination and Toxicology 70:533-540.