Ecological Assessment of Storm Impacts

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Data Collection

Kerb

CAS Number: 23950-58-5

Basic Information

The chemical structure of Kerb Synonym(s): 3,5-Dichloro-N-(1,1-dimethyl-2-propynyl)benzamide; Kerb; Kerb 50W; Pronamide; Propyzamide; RH-315
Formula: C12H11Cl2NO
 Molecular Weight: 256.131
 Boiling Point (°C): 321
 Melting Point (°C): 155 - 156
 Contaminant Type: Kerb is an herbicide.

Solubility (in water)

  • Solubility: 1.5 x 10(-3) g/100g g
    Temperature (°C): 24
  • Solubility: 15 mg/l e
    Temperature (°C): 25

Half-Life (in soil unless otherwise noted)

  • t1/2: 1-3 months g
  • t1/2: 30 days e
    Temperature (°C): 25

Toxicity Effects

  • Organism Type: Crustaceans c
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: >5.6 mg/l
     Test: 48h LC50
     Formulation: Kerb 50 W
  • Organism Type: Fish e
    Common Name: Goldfish
     Scientific Name: Carassius auratus
     Toxicity: 350 mg/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Goldfish
     Scientific Name: Carassius auratus
     Toxicity: 350 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 72 mg/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 72 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Guppy
     Scientific Name: Poecilia reticulata
    Toxicity: 150 mg/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Guppy
     Scientific Name: Poecilia reticulata
    Toxicity: 150 mg/l
     Test: 96h LC50
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: >5000 mg/kg
     Test: LD50
     Formulation: Kerb 50 W
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Male
     Toxicity: 8350 mg/kg
     Test: LD50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Female
     Toxicity: 5620 mg/kg
     Test: LD50

Octanol-Water Partition Coefficients

  • Log Kow: 3.05-3.27 e

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Potential applications of this contaminant in the St. Johns Water River Management District

Work Cited

c C&P Press. 2002. EPR Professional Annual CD. Crop Protection Reference. Chemical and Pharmacuetical Press, Inc., New York, NY.
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.