Ecological Assessment of Storm Impacts

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Data Collection

Methamidophos

CAS Number: 10265-92-6

Basic Information

The chemical structure of Methamidophos Synonym(s): Ortho 9006; O,S-Dimethyl phosphoramidothioate; Metamidofos Estrella; Acephate-met; Amidophos; Dimethyl phosphoramidothioate; Filitox; MTD 600; Patrole; Phosphoramidothioic acid O,S-dimethyl ester
Formula: C2H8NO2PS
 Molecular Weight: 141.125
 Melting Point (°C): 44.5
 Contaminant Type: Methamidophos is an insecticide.
Notes: Acaricide

Solubility (in water)

  • Solubility: >2,000,000 mg/l e
    Temperature (°C): 20

Toxicity Effects

  • Organism Type: Fish e
    Common Name: Goldfish
     Scientific Name: Carassius auratus
     Toxicity: 100 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Carp
     Scientific Name: Cyprinus carpio
     Toxicity: 100 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Orfe
     Scientific Name: Idus idus, or Leuciscus idus
     Toxicity: 10-100 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Pearl roach, rudd
     Scientific Name: Scardinius erythrophthalmus
     Toxicity: 10-100 mg/l
     Test: 96h LC50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: ~30 mg/kg
     Test: LD50

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

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.