Ecological Assessment of Storm Impacts

Overview > Data Collection

Data Collection

Metribuzin

CAS Number: 21087-64-9

Basic Information

The chemical structure of Metribuzin Synonym(s): Lexone; Lexone 4L; Lexone 75DF; Lexone DF; Metribuzin; Metribuzin ; metribuzin + chlorimuron; Preview; Salute; Sencor; Sencor 4L; Sencor 75DF; Sencoral; Sencor DF; Sencorex
Formula: C8H14N4OS
 Molecular Weight: 214.285
 Melting Point (°C): 125
 Contaminant Type: Metribuzin is an herbicide.
Notes: Colorless crystals soluble in alcohols

Solubility (in water)

  • Solubility: 1200 mg/l e

Half-Life (in soil unless otherwise noted)

  • t1/2: 90-115 days e
    Notes: with "normal" application rates, varies with soil type, longer half-lives at higher application rates

Toxicity Effects

  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 105 mg/l
     Test: 24h LC10,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 145 mg/l
     Test: 24h LC50,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 100 mg/l
     Test: 3m LC50,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 130 mg/l
     Test: 48h LC10,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 140 mg/l
     Test: 48h LC50,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 130 mg/l
     Test: 96h LC10,F
  • Organism Type: Fish e
    Common Name: Harlequin fish
     Scientific Name: Rasbora heteromorpha
     Toxicity: 140 mg/l
     Test: 96h LC50,F
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: >1500 mg/kg
     Test: LD50
     Formulation: Sencor 4

Octanol-Water Partition Coefficients

  • Log Kow: 1.6 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.