Ecological Assessment of Storm Impacts

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Data Collection

Azinphos-methyl

CAS Number: 86-50-0

Basic Information

The chemical structure of Azinphos-methyl Synonym(s): O,O-dimethyl S-(1,2,3-benzotriazinyl-4-keto)methyl phosphorodithioate; O,O-dimethyl S-(3,4-dihydro-4-keto-1,2,3-benzotriazinyl-3-methyl) dithiophosphate; crysthion 2l; crysthyon; Crysthyon 2L; DBD; gothnion; Gusathion; gusathion-20; gusathion 25; gusathio
Formula: C10H12N3O3PS2
 Molecular Weight: 317.317
 Melting Point (°C): 73
 Contaminant Type: Azinphos-methyl is an insecticide.
Notes: Brown, waxy solid.

Solubility (in water)

  • Solubility: 0.003 g/100ml d
  • Solubility: 29 mg/l e
    Temperature (°C): 25
  • Solubility: 9.5 mg/l k
    Temperature (°C): 10
  • Solubility: 20.9 mg/l k
    Temperature (°C): 20
  • Solubility: 43.6 mg/l k
    Temperature (°C): 30

Half-Life (in soil unless otherwise noted)

  • t1/2: 20 days ak
    Temperature (°C): 23-26
     Environment: "In a greenhouse at constant light and initial conc. of 5-10 mg/kg soil, experiment time 50 days - in sandy soil"
  • t1/2: 4 days ak
    Temperature (°C): 23-26
     Environment: "In a greenhouse at constant light and initial conc. of 5-10 mg/kg soil, experiment time 50 days - in organic-rich orchard soil"
  • t1/2: 5 days ak
    Temperature (°C): 23-26
     Environment: "In a greenhouse at constant light and initial conc. of 5-10 mg/kg soil, experiment time 50 days - in agricultural soil"
  • t1/2: 12 days ak
    Temperature (°C): 23-26
     Environment: "In a greenhouse at constant light and initial conc. of 5-10 mg/kg soil, experiment time 50 days - in soil from volcanic area"
  • t1/2: 10 days ak
    Temperature (°C): 23-26
     Environment: "In a greenhouse at constant light and initial conc. of 5-10 mg/kg soil, experiment time 50 days - in field experiments (dissipation t1/2)"
  • t1/2: 484 days k
    Temperature (°C): 6
     Environment: in a dry soil (2-3% moisture content)
  • t1/2: 88 days k
    Temperature (°C): 25
     Environment: in a dry soil (2-3% moisture content)
  • t1/2: 32 days k
    Temperature (°C): 40
     Environment: in a dry soil (2-3% moisture content)
  • t1/2: 64 days k
    Temperature (°C): 6
     Environment: In soil containing 50% moisture
  • t1/2: 13 days k
    Temperature (°C): 25
     Environment: In soil containing 50% moisture
  • t1/2: 5 days k
    Temperature (°C): 40
     Environment: In soil containing 50% moisture
  • t1/2: 21-68 days ap
    Environment: on soil texture and organic matter content

Toxicity Effects

  • Organism Type: Crustaceans ak
    Scientific Name: Caecidotea brevicauda
    Toxicity: 21 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus fasciatus
     Toxicity: 0.1 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus lacustris
     Toxicity: 0.15 µg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus pseudolimnaeus
     Toxicity: 0.1 µg/l
     Test: 30d NOEC
  • Organism Type: Crustaceans ak
    Common Name: Mississippi grass shrimp
     Scientific Name: Palaemonetes kadiakensis
     Toxicity: 1.2 µg/l
     Test: 120h LC50
  • Organism Type: Crustaceans e
    Common Name: Mississippi grass shrimp
     Scientific Name: Palaemonetes kadiakensis
     Toxicity: 0.16 µg/l
     Test: 20d LC50
  • Organism Type: Crustaceans ak
    Common Name: Mississippi grass shrimp
     Scientific Name: Palaemonetes kadiakensis
     Toxicity: 1.2 µg/l
     Test: 5d LC50
  • Organism Type: Fish e
    Common Name: Sunfish
     Toxicity: 0.05 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Goldfish
     Scientific Name: Carassius auratus
     Toxicity: 4.3 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Goldfish
     Scientific Name: Carassius auratus
     Toxicity: 0.51 µg/l
     Test: MATC,F
  • Organism Type: Fish e
    Common Name: Sheepshead minnow
     Scientific Name: Cyprinodon variegatus
     Toxicity: 0.35 µg/l
     Test: MATC Life Cycle
  • Organism Type: Fish e
    Common Name: Carp
     Scientific Name: Cyprinus carpio
     Toxicity: 0.7 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Alaskan stickleback, three-spine stickleback
     Scientific Name: Gasterosteus aculeatus
     Toxicity: 4.8 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Black bullhead
     Scientific Name: Ictalurus melas
     Toxicity: 3500 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Channel catfish
     Scientific Name: Ictalurus punctatus
     Toxicity: 3290 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 5.2 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 0.02 mg/l
     Test: 96h LC50
  • Organism Type: Fish k
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 4.6 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Redear sunfish
     Scientific Name: Lepomis microlophus
     Toxicity: 52 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Largemouth bass
     Scientific Name: Micropterus salmoides
     Toxicity: 5 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Coho salmon or silver salmon
     Scientific Name: Oncorhynchus kisutch
     Toxicity: 17 µg/l
     Test: 96h LC50
  • Organism Type: Fish k
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 20 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 7.1 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Life Stage: Fingerlings
     Toxicity: 7.1 mg/l
     Test: 96h LC50,S
  • Organism Type: Fish ak
    Common Name: Yellow perch
     Scientific Name: Perca flavescens
     Toxicity: 13 µg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Minnow
     Scientific Name: Phoxinus phoxinus
     Toxicity: 0.24 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Minnow
     Scientific Name: Phoxinus phoxinus
     Toxicity: 0.7 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 1.9 mg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 93 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Fathead minnow
     Scientific Name: Pimephales promelas
     Toxicity: 1.9 mg/l
     Test: 96h LC50,S
     Temperature (°C): 25
  • Organism Type: Fish k
    Common Name: Guppy
     Scientific Name: Poecilia reticulata
    Toxicity: 100 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Columbia River redband trout
     Scientific Name: Salmo gairdneri
     Toxicity: 14 µg/l
     Test: 96h LC50
  • Organism Type: Fish ak
    Common Name: Brown trout
     Scientific Name: Salmo trutta
     Toxicity: 4 µg/l
     Test: 96h LC50
  • Organism Type: Mammals ak
    Common Name: Guinea pig
     Gender: Male
     Toxicity: 80 mg/kg bw
     Test: LD50
  • Organism Type: Mammals e
    Common Name: Dog
     Scientific Name: Canis (Genus)
     Toxicity: >10 mg/kg bw
     Test: LD50
  • Organism Type: Mammals ak
    Common Name: Mouse
     Scientific Name: Muridae (Family)
     Toxicity: 11 - 20 mg/kg bw
     Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: 4.4-16 mg/kg
     Test: LD50
  • Organism Type: Mammals ak
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: 9 mg/kg bw
     Test: LD50
  • Organism Type: Molluscs ak
    Common Name: Eastern oyster
     Scientific Name: Crassostrea virginica
     Life Stage: Egg
     Toxicity: 620 µg/l
     Test: 48h LC50,S
  • Organism Type: Molluscs ak
    Common Name: Eastern oyster
     Scientific Name: Crassostrea virginica
     Life Stage: Egg
     Toxicity: 620 ppb
     Test: 48h LC50,S
  • Organism Type: Molluscs ak
    Common Name: Northern quahog
     Scientific Name: Mercenaria mercenaria
     Life Stage: Larval
     Toxicity: 860 ppb
     Test: 12d LC50,S
  • Organism Type: Molluscs ak
    Common Name: Northern quahog
     Scientific Name: Mercenaria mercenaria
     Life Stage: Egg
     Toxicity: 860 ppb
     Test: 48h LC50,S
  • Organism Type: Molluscs ak
    Common Name: Northern quahog
     Scientific Name: Mercenaria mercenaria
     Life Stage: Egg
     Toxicity: 860 µg/l
     Test: 48h LC50,S

Soil Organic Carbon/Water Partition Coefficients

  • Koc: 3 e
    Formulation: log
  • Koc: 3414 ml/g k
    pH Value: 6
  • Koc: 3789 ml/g k
  • Koc: 469 ml/g k
    pH Value: 6.6
  • Koc: 300 ml/g k
    pH Value: 6.4
  • Koc: 579 ml/g k
    pH Value: 7.9
  • Koc: 1058 ml/g k
    pH Value: 5.5
  • Koc: 1067 ml/g k
    pH Value: 5.4
  • Koc: 2.47-3.53 k
    Formulation: log

Octanol-Water Partition Coefficients

  • Log Kow: 2.7 e
  • Log Kow: "2.69, 2.75" k

Work Cited

d ChemFinder. Cambridge MA: CambridgeSoft Corporation. Retrieved November, 2003 from http://chemfinder.cambridgesoft.com
e Verschueren, K. 1996. Handbook of Environmental Data on Organic Chemicals, 3rd edition. John Wiley & Sons, Inc., New York.
g Meister, R. T., and C. Sine (Ed). 2003. Crop Protection Handbook, volume 89. Meister Publishing Company, Willoughby, OH.
k Montgomery, J. H. 1993. Agrochemicals Desk Reference: Environmental Data. Lewis Publishers, Boca Raton, FL.
ak Verschueren, K. 2001. Handbook of Environmental Data on Organic Chemicals, 4th edition. John Wiley & Sons, Inc., New York.
ap Environmental Health Clearinghouse. Pages retrieved April 2005 from http://infoventures.com/e-hlth/. Information Ventures, Inc.