Ecological Assessment of Storm Impacts

Data Collection

Dipropylthiocarbamic Acid S-Ethyl Ester

Basic Information

Synonym(s): Alirox; dipropylcarbamothioic acid S-ethyl ester; Sutazine+; Witox; Dipropylthiocarbamic Acid S-Ethyl Ester; Eptam; Eptam 10G; Eptam 7-E; EPTC; EPTC + antidote; Ethyl di-n-propylthiolcarbamate; Ethyl dipropylthiocarbamate; ethyl N,N-di-n-propylthiocarbama
Formula: C₉H₁₉NOS
Molecular Weight: 189.315
Boiling Point (°C): 127 at 20 mm Hg
Contaminant Type: Dipropylthiocarbamic Acid S-Ethyl Ester is an herbicide.
Notes: Light yellow liquid

Solubility (in water)

• Solubility: 375 mg/l ^ah
  Temperature (°C): 25
  

• Solubility: 370 mg/l ^ak
  

• Solubility: 375 mg/l ^g
  Temperature (°C): 25
  

Half-Life (in soil unless otherwise noted)

• t1/2: 6-32 days ^h
  

• t1/2: 6 days ^h
  Environment: most soil regimes
  

• t1/2: 25 days ^ak
  Temperature (°C): 25
  Environment: in sandy loam
  

• t1/2: 44 days ^ak
  Temperature (°C): 25
  Environment: in loamy sand
  

• t1/2: 7 days ^ak
  Temperature (°C): 21-32
  Environment: in soil
  

• t1/2: 6-35 days ^al
  

• t1/2: 3.4 hours ^al
  Environment: volatilization from wet soil surface
  

• t1/2: 4-5 weeks ^al
  Temperature (°C): 25
  pH Value: 7.5
  Environment: in Regina heavy clay soil - initial concentration of 5 ppm
  

• t1/2: 4 weeks ^al
  Temperature (°C): 25
  pH Value: 7
  Environment: in Weybum loam soil - initial concentration of 5 ppm
  

• t1/2: 1 weeks ^al
  Temperature (°C): 21-27
  Environment: in moist loam soil
  

• t1/2: 30 days ^k
  

Toxicity Effects

• Organism Type: Birds ^h
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: 20000 ppm
  Test: 7d LD50
  

• Organism Type: Birds ^h
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: 20000 ppm
  Test: LD50
  

• Organism Type: Crustaceans ^h
  Common Name: Blue crab
  Scientific Name: Callinectes sapidus
  Toxicity: >20 mg/l
  Test: 24h LC50
  

• Organism Type: Crustaceans ^ak
  Common Name: Blue crab
  Scientific Name: Callinectes sapidus
  Toxicity: >20 mg/l
  Test: 24h LC50
  Formulation: technical eptam
  

• Organism Type: Crustaceans ^ak
  Common Name: Blue crab
  Scientific Name: Callinectes sapidus
  Toxicity: >20 ppm
  Test: 24h LC50
  Formulation: technical eptam
  

• Organism Type: Crustaceans ^k
  Common Name: Blue crab
  Scientific Name: Callinectes sapidus
  Toxicity: 10 mg/l
  Test: 24h LC50
  

• Organism Type: Crustaceans ^ak
  Scientific Name: Gammarus fasciatus
  Toxicity: 23 mg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^ak
  Common Name: Brown shrimp
  Scientific Name: Penaeus aztecus
  Toxicity: 0.63 ppm
  Test: 48h LC50
  Formulation: technical eptam
  

• Organism Type: Fish ^ak
  Common Name: Longnose killifish
  Scientific Name: Fundulus similis
  Toxicity: >10 mg/l
  Test: 48h LC50
  Formulation: technical eptam
  

• Organism Type: Fish ^h
  Common Name: Mosquitofish
  Scientific Name: Gambusia affinis
  Toxicity: 17 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^k
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 27 mg/l
  Test: 48h LC50
  

• Organism Type: Fish ^h
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 27 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^ak
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 27 mg/l
  Test: 96h LC50
  Formulation: technical eptam
  

• Organism Type: Fish ^h
  Common Name: Cutthroat trout
  Scientific Name: Oncorhynchus clarkii
  Toxicity: 17 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^k
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 19 mg/l
  Test: 48h LC50
  

• Organism Type: Fish ^h
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 19 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^ak
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 19 mg/l
  Test: 96h LC50
  Formulation: technical eptam
  

• Organism Type: Fish ^ak
  Common Name: Columbia River redband trout
  Scientific Name: Salmo gairdneri
  Toxicity: 19 mg/l
  Test: 96h LC50
  Formulation: technical eptam
  

• Organism Type: Fish ^h
  Common Name: Lake trout
  Scientific Name: Salvelinus namaycush
  Toxicity: 16 mg/l
  Test: 96h LC50
  

• Organism Type: Mammals ^h
  Common Name: Cats
  Scientific Name: Felidae (Family)
  Toxicity: 112 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Rabbits
  Scientific Name: Lagomorpha (order)
  Toxicity: 2460 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^ak
  Common Name: Rabbits
  Scientific Name: Lagomorpha (order)
  Toxicity: 2525-2550 mg/kg bw
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Toxicity: 3160 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Gender: Male
  Toxicity: 3200 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^ah
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Male
  Toxicity: 1325 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^g
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Male
  Toxicity: 1325 mg/kg
  Test: LD50
  Formulation: Eptam 7E
  

• Organism Type: Mammals ^ah
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 1632 mg/kg
  Test: LD50
  Formulation: Eptam 7E
  

• Organism Type: Mammals ^h
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 1632 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Male
  Toxicity: 1700 mg/kg
  Test: LD50
  

• Organism Type: Molluscs ^ak
  Common Name: Eastern oyster
  Scientific Name: Crassostrea virginica
  Toxicity: 5 ppm
  Test: 28, shell growth inhib.
  Formulation: technical eptam
  

• Organism Type: Molluscs ^ak
  Common Name: Eastern oyster
  Scientific Name: Crassostrea virginica
  Toxicity: 5 mg/l
  Test: 96h EC50
  Formulation: technical eptam
  Notes: shell growth inhibition

Soil Organic Carbon/Water Partition Coefficients

• Koc: 148-242 ^ak
  

• Koc: 109-283 ^al
  

• Koc: 200 ^al
  

• Koc: 2.38 ^k
  Formulation: log
  

Octanol-Water Partition Coefficients

• Log Kow: 3.2041 ^h
  Notes: Source did not specify type of partition coeffecient or if value was the log

• Log Kow: 3.2 ^k
  

Work Cited