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Deltamethrin

CAS Number: 52918-63-5

Basic Information

The chemical structure of Deltamethrin Synonym(s): Decamethrin; Decis; 3-(2,2-Dibromoethenyl)-2,2-dimethylcyclopropanecarboxylic acid cyano(3-phenoxyphenyl)methyl ester
Formula: C22H19Br2NO3
 Molecular Weight: 505.205
 Boiling Point (°C): 300
 Melting Point (°C): 98
 Contaminant Type: Deltamethrin is an insecticide.
Additional Information: As is common with many pyrethoids, deltamethrin has a high toxicity to fish under laboratory conditions. However, in field conditions under normal conditions of use, fish are not harmed. Deltamethrin had an impact on aquatic herbivorous insects. This impact led to an increase of algae. Although the fish (fathead minnows) accumulated the deltamethrin, no mortality could be observed. m

Solubility (in water)

  • Solubility: <0.2 ng/l g
    Temperature (°C): 25
  • Solubility: <0.1 mg/l e

Half-Life (in soil unless otherwise noted)

  • t1/2: 1-2 weeks h
  • t1/2: 1-2 weeks e

Toxicity Effects

  • Organism Type: Crustaceans o
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: 5 µg/l
     Test: 48h LC50
     Notes: Extensive field studies, in experimental ponds, and field use have shown that this high potential toxicity is not realized.
  • Organism Type: Fish e
    Common Name: Desert pupfish
     Scientific Name: Cyprinodon macularius
     Toxicity: 0.6 µg/l
     Test: 48h LC50,S
  • Organism Type: Fish e
    Common Name: Mosquitofish
     Scientific Name: Gambusia affinis
     Toxicity: 1.0 µg/l
     Test: 48h LC50,S
  • Organism Type: Fish e
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 0.5 µg/l
     Test: 48h LC50,S
  • Organism Type: Fish e
    Common Name: Mozambique tilapia
     Scientific Name: Oreochromis mossambicus
     Toxicity: 0.8 µg/l
     Test: 48h LC50,S
  • Organism Type: Mammals c
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: >15000 mg/kg
     Test: LD50
     Formulation: DeltaGard T&O 5SC
  • Organism Type: Mammals m
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Male
     Toxicity: 128->5000 mg/kg
     Test: LD50
     Notes: Depending on carrier and conditions
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: 128.5 mg/kg
     Test: LD50
  • Organism Type: Mammals m
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Gender: Female
     Toxicity: 52, 31-139 mg/kg
     Test: LD50
     Notes: Depending on carrier and conditions

Octanol-Water Partition Coefficients

  • Log Kow: n
    Notes: Octanol/ water partition coefficient as log Pow: 5.43
  • Log Kow: 4.6 e
    Formulation: at 25C

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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.
h Extension Toxicology Network. Pages retrieved November, 2003 from http://ace.orst.edu/info/extoxnet/. Oregon State University, Corvallis, OR.
m The University of Manchester Compound Database. Pages retrieved November 2003 from http://www.man.ac.uk/umec/extra/list.html. The University of Manchester, Manchester, England.
n International Chemical Safety Cards. Pages retrieved November, 2003 from http://www.cdc.gov/niosh/ipcsngrm/ngrmsyn.html. Center for Disease Control and Prevention, Atlanta, GA.
o Environmental Health Criteria. Pages retrieved November, 2003 from: http://www.inchem.org/pages/ehc.html. International Programme on Chemical Safety, Canada.