Ecological Assessment of Storm Impacts

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Quizalofop-Et

CAS Number: 76578-14-8

Basic Information

The chemical structure of Quizalofop-Et Synonym(s): 2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acid ethyl ester; Assure ; DPX-Y6202; Ethyl 2-(4-(6-chloro-2-quinoxalyloxy)phenoxy)propionate; ethyl 2-(4-(6-chloro-quinoxalin-2-yl-oxy)phenoxy)propanoate; EXP-3864; FBC-32197; INY-6202; NC 302; Pilot;
Formula: C19H17ClN2O4
Molecular Weight: 372.8
Boiling Point (°C): 220 at 0.2 mm Hg
Melting Point (°C): 91.7 - 92.1
Contaminant Type: Quizalofop-Et is an herbicide.

Solubility (in water)

  • Solubility: 0.00003 g/100ml g
    Temperature (°C): 20
  • Solubility: 310 µg/l k
    Temperature (°C): 25

Half-Life (in soil unless otherwise noted)

  • t1/2: 139 days g
    Environment: silty clay loam
  • t1/2: 145 days g
    Environment: silt loam

Toxicity Effects

  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Female
    Toxicity: 1480 mg/kg
    Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Female
    Toxicity: 1480 mg/kg
    Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Female
    Toxicity: 1480 mg/kg
    Test: LD50
  • Organism Type: Mammals k
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Female
    Toxicity: 1500 mg/kg
    Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Male
    Toxicity: 1670 mg/kg
    Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Male
    Toxicity: 1670 mg/kg
    Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Male
    Toxicity: 1670 mg/kg
    Test: LD50
  • Organism Type: Mammals k
    Common Name: Rat
    Scientific Name: Muridae (Family)
    Gender: Male
    Toxicity: 1700 mg/kg
    Test: LD50

Soil Organic Carbon/Water Partition Coefficients

  • Koc: ~2.76 k
    Formulation: log

Work Cited

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.