Ecological Assessment of Storm Impacts

Data Collection

Phosmet

Basic Information

Synonym(s): Appa; Dimethyl phosphorodithioate S-ester with N-(mercaptomethyl)phthalimide; Dimethylphthalimidiomethyl dithiophosphate; Dimethyl S-(phthalimidomethyl) phosphorodithioate; Decemthion; Decemthion P-6; Ftalophos; Imidan; Kemolate; Percolate; Phosmet; Phosm
Formula: C₁₁H₁₂NO₄PS₂
Molecular Weight: 317.33
Melting Point (°C): 72.5
Contaminant Type: Phosmet is an insecticide.
Notes: Off-white crystalline solid

Solubility (in water)

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

• Solubility: 22-25 mg/l ^k
  Temperature (°C): 25
  

Half-Life (in soil unless otherwise noted)

• t1/2: 4-20 days ^h
  

Toxicity Effects

• Organism Type: Birds ^h
  Common Name: Red-wing blackbirds
  Scientific Name: Agelaius phoeniceus
  Toxicity: 18 mg/kg
  Test: LD50
  

• Organism Type: Birds ^h
  Common Name: Mallard
  Scientific Name: Anas platyrhynchos
  Toxicity: 1830 mg/kg
  Test: LD50
  

• Organism Type: Birds ^h
  Common Name: pheasant
  Scientific Name: Phasianidae (Family)
  Toxicity: 237 mg/kg
  Test: LD50
  

• Organism Type: Birds ^h
  Common Name: European starlings
  Scientific Name: Sturnus vulgaris
  Toxicity: >100 mg/kg
  Test: LD50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 2.7 mg/l
  Test: 24h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: 0.84 mg/l
  Test: 48h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus pseudolimnaeus
  Toxicity: 2.4 µg/l
  Test: 48h LC50
  

• Organism Type: Fish ^k
  Common Name: Channel catfish
  Scientific Name: Ictalurus punctatus
  Toxicity: 11000 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^k
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 70 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 70 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^e
  Common Name: Smallmouth bass
  Scientific Name: Micropterus dolomieu
  Toxicity: 150 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^k
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 560 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 560 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Life Stage: Fingerlings
  Toxicity: >10000 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Life Stage: Fry
  Toxicity: >10000 µg/l
  Test: 96h LC50,S
  Notes: Yolk sac fry

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Life Stage: Egg
  Toxicity: 7300 µg/l
  Test: 96h LC50,S
  Notes: Eyed eggs

• Organism Type: Fish ^e
  Common Name: Chinook salmon or king salmon
  Scientific Name: Oncorhynchus tshawytscha
  Toxicity: 150 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^k
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 7300 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 11000 µg/l
  Test: 96h LC50,S
  

• Organism Type: Mammals ^e
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Toxicity: 160 mg/kg bw
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 113-160 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^e
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 26 mg/kg bw
  Test: LD50
  

Soil Organic Carbon/Water Partition Coefficients

• Koc: 2.87-2.90 ^k
  Formulation: log - calculated
  

Octanol-Water Partition Coefficients

• Log Kow: 2.83 ^e
  

• Log Kow: 3.0414 ^h
  Notes: Source did not specify type of partition coeffecient or if value was the log

• Log Kow: 2.78-3.04 ^k
  

Work Cited