Ecological Assessment of Storm Impacts

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Linuron

CAS Number: 330-55-2

Basic Information

The chemical structure of Linuron Synonym(s): 1-Methoxy-1-methyl-3-(3,4-dichlorophenyl)urea; 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea; 3-(3,4-Dichlorophenyl)-1-methoxy(methyl)urea; Afalon; Aflon; Alafon; Cephalon
Formula: C9H10Cl2N2O2
 Molecular Weight: 249.096
 Boiling Point (°C): 180 - 190
 Melting Point (°C): 93 - 94
 Contaminant Type: Linuron is an herbicide.

Solubility (in water)

  • Solubility: 63.8 mg/l g
    Temperature (°C): 20
     pH Value: 7
     Formulation: Pure

Toxicity Effects

  • Organism Type: Fish e
    Common Name: Channel catfish
     Scientific Name: Ictalurus punctatus
     Toxicity: 0.012 mmol/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 9.6 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 0.064 mmol/l
     Test: 96h LC50
  • Organism Type: Fish g
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 3.3 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Columbia River redband trout
     Scientific Name: Salmo gairdneri
     Toxicity: 0.064 mmol/l
     Test: 96h LC50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: 4000 mg/kg
     Test: LD50
     Formulation: In starch mucilage
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Female
     Toxicity: 4060 mg/kg
     Test: LD50
     Formulation: Lorox DF
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Male
     Toxicity: 4833 mg/kg
     Test: LD50
     Formulation: Lorox DF

Octanol-Water Partition Coefficients

  • Log Kow: 3.18 e

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

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.