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Data Collection

Metolachlor

CAS Number: 51218-45-2

Basic Information

The chemical structure of Metolachlor Synonym(s): Codal; Cotoran multi; Dual; Dual 25G; Dual 8E; Metelilachlor; Ontrack 8E; Pace 6L; Pennant; Primagram; Primextra; Turbo
Formula: C₁₅H₂₂ClNO₂
Molecular Weight: 283.797
Boiling Point (°C): 100 (.001mm Hg)
Contaminant Type: Metolachlor is an herbicide.

Solubility (in water)

Solubility: 530 mg/l ^g
Temperature (°C): 20

Solubility: 530 mg/l ^e
Temperature (°C): 20

Half-Life (in soil unless otherwise noted)

t1/2: 9 days ^c
Environment: Primary aerobic degradation
Formulation: Dual II Magnum

t1/2: 2 months ^c
Environment: Secondary degradation
Formulation: Dual II Magnum

Toxicity Effects

Organism Type: Birds ^g
Common Name: Mallard
Scientific Name: Anas platyrhynchos
Toxicity: >10000 mg/l
Test: LD50
Notes: dietary LD50

Organism Type: Birds ^g
Common Name: Mallard
Scientific Name: Anas platyrhynchos
Toxicity: >2510 mg/kg
Test: LD50
Notes: oral LD50

Organism Type: Fish ^e
Common Name: 5 freshwater species
Toxicity: 2-15 mg/l
Test: LC50

Organism Type: Mammals ^g
Common Name: Rat
Scientific Name: Muridae (Family)
Toxicity: 2780 mg/kg
Test: LD50

Soil Organic Carbon/Water Partition Coefficients

Koc: 110 - 369 ^c
Formulation: Dual II Magnum

Octanol-Water Partition Coefficients

Log Kow: 2.9 ^e
Formulation: at 25C

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.