Ecological Assessment of Storm Impacts

Data Collection

Fenthion

Basic Information

Synonym(s): Tiguvon; O,O-dimethyl O-(4-methylmercapto-3-methylphenyl) thionophosphate; O,O-dimethyl O-4-(methylmercapto)-3-methylphenyl phosphorothioate; O,O-dimethyl O-(4-methylthio-3-methylphenyl) thiophosphate; O,O-dimethyl-O-[4-(methylthio)-m-tolyl] phosphorothioate; m-cresol, 4-(methylthio)-, O-ester with O,O-dimethyl phosphorothioate; 4-Methylmercapto-3-methylphenyl dimethyl thiophosphate; b 29493; bay 29493; Baycid; bayer 29493; bayer 9007; bayer s-1752; Baytex; Dimethyl O-(3-methyl-4-(methylthio)phenyl) thiophosphate; Dimethyl O-((4-methylmercapto)-3-methylphenyl)thionophosphate; Dimethyl O-(4-(methylthio)-m-tolyl) phosphorothioate; Dimethyl (3-methyl-4-(methylthio)phenyl) phosphorothionate; Dimethyl methylthiotolyl phosphorothioate; BX-1; BX-2; DMTP; Entex; Fenthion; Lebaycid;
Formula: C₁₀H₁₅O₃PS₂
Molecular Weight: 278.32
Boiling Point (°C): 87 at 0.01 mm Hg
Melting Point (°C): 7.5
Contaminant Type: Fenthion is an insecticide.
Notes: Liquid, slight odor of garlic, insecticide, acaricide

Solubility (in water)

• Solubility: 55 ppm ^e
  Temperature (°C): room
  

• Solubility: 2 mg/l ^h
  Temperature (°C): 20
  

• Solubility: 6.4 mg/l ^k
  Temperature (°C): 10
  

• Solubility: 9.3 mg/l ^k
  Temperature (°C): 20
  

• Solubility: 11.3 mg/l ^k
  Temperature (°C): 30
  

Half-Life (in soil unless otherwise noted)

• t1/2: 34 days ^h
  

Toxicity Effects

• Organism Type: Birds ^h
  Common Name: Ducks
  Toxicity: 26 mg/kg
  Test: LD50
  

• Organism Type: Birds ^h
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: <4 mg/kg
  Test: LD50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Caecidotea brevicauda
  Toxicity: 1800 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Daphnia
  Scientific Name: Daphnia pulex
  Toxicity: 0.8 µg/l
  Test: 48h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus fasciatus
  Toxicity: 110 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus lacustris
  Toxicity: 8.4 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Gammarus pulex
  Toxicity: 0.014 mg/l
  Test: 48h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Swamp lymnaea
  Scientific Name: Lymnaea stagnalis
  Toxicity: 6.4 mg/l
  Test: 48h LC50
  

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

• Organism Type: Crustaceans ^e
  Common Name: Migrant prawn, oriental shrimp
  Scientific Name: Palaemon macrodactylus
  Toxicity: 30; 5.3 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Mississippi grass shrimp
  Scientific Name: Palaemonetes kadiakensis
  Toxicity: 5 µg/l
  Test: 120h LC50
  

• Organism Type: Crustaceans ^e
  Common Name: Mississippi grass shrimp
  Scientific Name: Palaemonetes kadiakensis
  Toxicity: 1.5 µg/l
  Test: 20d LC50
  

• Organism Type: Crustaceans ^e
  Scientific Name: Simocephalus serrulatus
  Toxicity: 0.62 µg/l
  Test: 48h LC50
  

• Organism Type: Fish ^e
  Common Name: Sunfish
  Toxicity: 1900 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Perch
  Toxicity: 1700 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Goldfish
  Scientific Name: Carassius auratus
  Toxicity: 3.4 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Goldfish
  Scientific Name: Carassius auratus
  Toxicity: 3400 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Bullhead
  Scientific Name: Cottus gobio
  Toxicity: 1600 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 1.16 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Carp
  Scientific Name: Cyprinus carpio
  Toxicity: 1200 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Bass
  Scientific Name: Dicentrarchus labrax
  Toxicity: 1500 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Black bullhead
  Scientific Name: Ictalurus melas
  Toxicity: 1620 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Channel catfish
  Scientific Name: Ictalurus punctatus
  Toxicity: 1680 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 1.38 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 1400 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Largemouth bass
  Scientific Name: Micropterus salmoides
  Toxicity: 1540 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Largemouth bass
  Scientific Name: Micropterus salmoides
  Toxicity: 1.54 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Coho salmon or silver salmon
  Scientific Name: Oncorhynchus kisutch
  Toxicity: 1.32 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Coho salmon or silver salmon
  Scientific Name: Oncorhynchus kisutch
  Toxicity: 1300 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 9.3 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: 900 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Yellow perch
  Scientific Name: Perca flavescens
  Toxicity: 1.65 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Yellow perch
  Scientific Name: Perca flavescens
  Toxicity: 1650 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Minnow
  Scientific Name: Phoxinus phoxinus
  Toxicity: 2400 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 2440 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Fathead minnow
  Scientific Name: Pimephales promelas
  Toxicity: 2.4 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Columbia River redband trout
  Scientific Name: Salmo gairdneri
  Toxicity: 930 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^h
  Common Name: Brown trout
  Scientific Name: Salmo trutta
  Toxicity: 1.33 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Brown trout
  Scientific Name: Salmo trutta
  Toxicity: 1300 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Brown trout
  Scientific Name: Salmo trutta
  Toxicity: 1330 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^e
  Common Name: Catfish
  Scientific Name: Siluriformes (Order)
  Toxicity: 1700 µg/l
  Test: 96h LC50
  

• Organism Type: Mammals ^h
  Common Name: Rabbits
  Scientific Name: Lagomorpha (order)
  Toxicity: 150 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 180 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Female
  Toxicity: 290 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Gender: Male
  Toxicity: 375 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Toxicity: 88-145 mg/kg
  Test: LD50
  

Soil Organic Carbon/Water Partition Coefficients

• Koc: 1684 ml/g ^k
  Formulation: Sand
  pH Value: 6.9
  

• Koc: 948 ml/g ^k
  Formulation: Sandy loam
  pH Value: 7.7
  

• Koc: 2184 ml/g ^k
  Formulation: Sandy loam
  pH Value: 5.5
  

• Koc: 1623 ml/g ^k
  Formulation: Silty loam
  pH Value: 6.7
  

• Koc: 1069 ml/g ^k
  Formulation: Silty loam
  pH Value: 6.3
  

• Koc: 0.89-1.58 ^k
  Formulation: log
  

Octanol-Water Partition Coefficients

• Log Kow: 4.091 ^h
  Notes: Source did not specify type of partition coeffecient or if value was the log

• Log Kow: 4.09 ^k
  

Work Cited