Ecological Assessment of Storm Impacts

Data Collection

Dichlorvos

Basic Information

Synonym(s): O,O-dimethyl O-2,2-dichlorovinyl phosphate; O,O-dimethyl 2,2-dichlorovinyl phosphate; O,O-dimethyl dichlorovinyl phosphate; apavap; Astrobot; Atgard; atgard c; atgard v; bay-19149; bayer 19149; benfos; bibesol; Dichloroethenyl dimethyl phosphate; Dichlorm
Formula: C₄H₇Cl₂O₄P
Molecular Weight: 220.98
Boiling Point (°C): 140
Melting Point (°C): -60
Contaminant Type: Dichlorvos is an insecticide.
Notes: Colorless to amber liquid with a mild, chemical odor

Solubility (in water)

• Solubility: 10000 mg/l ^d
  Temperature (°C): room
  

• Solubility: 16 g/l ^k
  Temperature (°C): 20
  

Half-Life (in soil unless otherwise noted)

• t1/2: 5 hours ^ak
  pH Value: 8
  Environment: in water
  

• t1/2: 8 hours ^ak
  pH Value: 7
  Environment: in water
  

• t1/2: 35 hours ^ak
  pH Value: 6
  Environment: in water
  

• t1/2: 77 hours ^ak
  pH Value: 5.4
  Environment: in water
  

• t1/2: 7 days ^h
  Environment: "in clay, sandy clay, loose sandy soil"
  

• t1/2: 2-8 hours ^ap
  

Toxicity Effects

• Organism Type: Birds ^h
  Common Name: Chickens
  Toxicity: 15 mg/kg
  Test: LD50
  

• Organism Type: Crustaceans ^ak
  Common Name: Sand shrimp, sevenspine bay shrimp
  Scientific Name: Crangon septemspinosa
  Toxicity: 4 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^ak
  Common Name: Daphnia
  Scientific Name: Daphnia pulex
  Toxicity: 0.07 µg/l
  Test: 48h LC50
  

• Organism Type: Crustaceans ^ak
  Scientific Name: Gammarus fasciatus
  Toxicity: 0.4 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^ak
  Scientific Name: Gammarus lacustris
  Toxicity: 0.5 µg/l
  Test: 96h LC50
  

• Organism Type: Crustaceans ^ak
  Common Name: Long-armed hermit crab
  Scientific Name: Pagurus longicarpus
  Toxicity: 45 µg/l
  Test: 96h LC50,S
  

• Organism Type: Crustaceans ^ak
  Common Name: Common grass shrimp
  Scientific Name: Palaemonetes vulgaris
  Toxicity: 15 µg/l
  Test: 96h LC50,S
  

• Organism Type: Crustaceans ^ak
  Scientific Name: Simocephalus serrulatus
  Toxicity: 0.26 µg/l
  Test: 48h LC50
  

• Organism Type: Fish ^ak
  Common Name: American eel
  Scientific Name: Anguilla rostrata
  Toxicity: 1800 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Scientific Name: Barilius bendelisis
  Toxicity: 0.5 mg/l
  Test: LC50
  

• Organism Type: Fish ^ak
  Common Name: Mummichog
  Scientific Name: Fundulus heteroclitus
  Toxicity: 2680 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Common Name: Mummichog
  Scientific Name: Fundulus heteroclitus
  Toxicity: 3700 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Common Name: Striped killifish
  Scientific Name: Fundulus majalis
  Toxicity: 2300 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 1000 µg/l
  Test: 24h LC50
  

• Organism Type: Fish ^ak
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: 869 µg/l
  Test: 96h LC50
  

• Organism Type: Fish ^ak
  Common Name: Atlantic silverside
  Scientific Name: Menidia menidia
  Toxicity: 1250 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Common Name: Striped mullet
  Scientific Name: Mugil cephalus
  Toxicity: 200 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Common Name: Northern puffer
  Scientific Name: Sphaeroides maculatus
  Toxicity: 2250 µg/l
  Test: 96h LC50,S
  

• Organism Type: Fish ^ak
  Common Name: Bluehead
  Scientific Name: Thalassoma bifasciatum
  Toxicity: 1400 µg/l
  Test: 96h LC50,S
  

• Organism Type: Mammals ^h
  Common Name: Dog
  Scientific Name: Canis (Genus)
  Toxicity: 100-1090 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Rabbits
  Scientific Name: Lagomorpha (order)
  Toxicity: 11-12.5 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^ak
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Toxicity: 140-275 mg/kg bw
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 56-80 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Mouse
  Scientific Name: Muridae (Family)
  Toxicity: 61-175 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^k
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 25 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: 25-80 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^h
  Common Name: Pig
  Scientific Name: Sus sp.
  Toxicity: 157 mg/kg
  Test: LD50
  

• Organism Type: Molluscs ^ak
  Scientific Name: Anodonta anatina
  Toxicity: 0.6-2.2 ml/l
  Test: 2d LC50
  

• Organism Type: Molluscs ^ak
  Scientific Name: Anodonta anatina
  Toxicity: 0.34-0.44 ml/l
  Test: 4d LC50
  

• Organism Type: Molluscs ^ak
  Scientific Name: Anodonta cygnea
  Toxicity: 0.66-1.2 ml/l
  Test: 2d LC50
  

• Organism Type: Molluscs ^ak
  Scientific Name: Anodonta cygnea
  Toxicity: 0.33-0.39 ml/l
  Test: 4d LC50
  

• Organism Type: Molluscs ^ak
  Scientific Name: Unio pictorum
  Toxicity: 0.5-0.69 ml/l
  Test: 4d LC50
  

• Organism Type: Molluscs ^ak
  Scientific Name: Unio pictorum
  Toxicity: 2.8-7.1 ml/l
  Test: LC50
  

Soil Organic Carbon/Water Partition Coefficients

• Koc: 28 ^ak
  Formulation: calculated
  

• Koc: 1.7 ^k
  Formulation: log-calculated
  

Octanol-Water Partition Coefficients

• Log Kow: 1.5 ^ak
  

• Log Kow: 1.40-2.29 ^k
  

Work Cited