Ecological Assessment of Storm Impacts

Data Collection

Phorate

Basic Information

Synonym(s): O,O-diethyl S-ethylmercaptomethyl dithiophosphate; Phosphorodithioic acid O,O-diethyl S-[(ethylthio)methyl] ester; Rampart; Thimet; Thimet(R)
Formula: C₇H₁₇O₂PS₃
Molecular Weight: 260.364
Boiling Point (°C): 125 - 127 (2.0mm Hg)
Melting Point (°C): -42.9
Contaminant Type: Phorate is an insecticide.
Notes: Liquid

Solubility (in water)

• Solubility: 50 mg/l ^g
  Temperature (°C): 25
  

Toxicity Effects

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus fasciatus
  Toxicity: 0.6 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus lacustris
  Toxicity: 9 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Orconectes nais
  Toxicity: 50 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Sheepshead minnow
  Scientific Name: Cyprinodon variegatus
  Toxicity: 1.3 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Sheepshead minnow
  Scientific Name: Cyprinodon variegatus
  Toxicity: 0.31 µg/l
  Test: MATC
  

• Organism Type: Fish ^g
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 2 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Inland silverside, tidewater silverside
  Scientific Name: Menidia beryllina
  Toxicity: 0.33 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Inland silverside, tidewater silverside
  Scientific Name: Menidia beryllina
  Toxicity: 0.11 µg/l
  Test: MATC
  

• Organism Type: Fish ^g
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 6.0-13.0 µg/l
  Test: 96h LC50
  

• Organism Type: Mammals ^g
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 2-4 mg/kg
  Test: LD50
  

Octanol-Water Partition Coefficients

• Log Kow: 3.9 ^e
  

Work Cited