Ecological Assessment of Storm Impacts

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Data Collection

Imazethapyr

CAS Number: 81335-77-5

Basic Information

The chemical structure of Imazethapyr Synonym(s): 2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl)-5-ethyl-3-pyridinecarboxylic acid; 5-Ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid; Imazethapyr; Pursuit ; Pursuit DG;
Formula: C15H19N3O3
Molecular Weight: 289.333
Melting Point (°C): 169 - 173
Contaminant Type: Imazethapyr is an herbicide.

Solubility (in water)

  • Solubility: 1400 mg/l g
    Temperature (°C): 25
    pH Value: 7

Toxicity Effects

  • Organism Type: Birds h
    Common Name: Mallard
    Scientific Name: Anas platyrhynchos
    Toxicity: >2150 mg/kg
    Test: LD50
  • Organism Type: Birds h
    Common Name: Quail
    Scientific Name: Phasianidae (Family)
    Toxicity: >2150 mg/kg
    Test: LD50
  • Organism Type: Crustaceans h
    Common Name: Daphnia
    Scientific Name: Daphnia magna
    Toxicity: >100 mg/l
    Test: 48h LC50
  • Organism Type: Fish h
    Common Name: Channel catfish
    Scientific Name: Ictalurus punctatus
    Toxicity: 240 mg/l
    Test: 96h LC50
  • Organism Type: Fish h
    Common Name: Bluegill
    Scientific Name: Lepomis macrochirus
    Toxicity: 420 mg/l
    Test: 96h LC50
  • Organism Type: Fish h
    Common Name: Rainbow trout
    Scientific Name: Oncorhynchus mykiss
    Toxicity: 340 mg/l
    Test: 96h LC50
  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Toxicity: >5000 mg/kg
    Test: LD50
  • Organism Type: Mammals h
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Toxicity: >5000 mg/kg
    Test: LD50

Resource Map: Click below to open in a new window to view or print.
Potential applications of this contaminant in the St. Johns Water River Management District

Work Cited

g Meister, R. T., and C. Sine (Ed). 2003. Crop Protection Handbook, volume 89. Meister Publishing Company, Willoughby, OH.
h Extension Toxicology Network. Pages retrieved November, 2003 from http://ace.orst.edu/info/extoxnet/. Oregon State University, Corvallis, OR.