Ecological Assessment of Storm Impacts

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Data Collection

Simazine

CAS Number: 122-34-9

Basic Information

The chemical structure of Simazine Synonym(s): Aquazine; Caliber 90; CAT; CDT; Cekusan Gesatop; Gesapun; Gesatop; Primatol S; Princep;
Formula: C7H12ClN5
 Molecular Weight: 201.658
 Boiling Point (°C): 225
 Melting Point (°C): 225
 Contaminant Type: Simazine is an herbicide.

Solubility (in water)

  • Solubility: 3.5 mg/l g
    Temperature (°C): 20
  • Solubility: 5 mg/l e
    Temperature (°C): 20

Toxicity Effects

  • Organism Type: Algae e
    Scientific Name: Chlorococcum spp.
     Toxicity: 2-2.5 mg/l
     Test: 10d EC50
    Formulation: Technical acid
  • Organism Type: Algae e
    Scientific Name: Dunaliella tertiolecta
     Toxicity: 4-5 mg/l
     Test: 10d EC50
    Formulation: Technical acid
  • Organism Type: Algae e
    Scientific Name: Isochrysis galbana
     Toxicity: 0.5-0.6 mg/l
     Test: 10d EC50
    Formulation: Technical acid
  • Organism Type: Algae e
    Scientific Name: Phaeodactylum tricornutum
     Toxicity: 0.5-0.6 mg/l
     Test: 10d EC50
    Formulation: Technical acid
  • Organism Type: Crustaceans e
    Scientific Name: Cypridopsis vidua
     Toxicity: 3 mg/l
     Test: 48h LC50
  • Organism Type: Crustaceans e
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: >3.5 mg/l
     Test: 2d EC50
  • Organism Type: Crustaceans e
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: 1 mg/l
     Test: 48h LC50
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus fasciatus
     Toxicity: 100 mg/l
     Test: 48h NOEC
  • Organism Type: Crustaceans e
    Scientific Name: Gammarus lacustris
     Toxicity: 13 mg/l
     Test: 96h LC50
  • Organism Type: Crustaceans e
    Common Name: Swamp lymnaea
     Scientific Name: Lymnaea stagnalis
     Toxicity: <0.20 mg/l
     Test: 20d EC50
  • Organism Type: Crustaceans e
    Scientific Name: Orconectes nais
     Toxicity: 100 mg/l
     Test: 48h NOEC
  • Organism Type: Crustaceans e
    Common Name: Mississippi grass shrimp
     Scientific Name: Palaemonetes kadiakensis
     Toxicity: 100 mg/l
     Test: 48h NOEC
  • Organism Type: Fish e
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 130 mg/l
     Test: 48h LC50
  • Organism Type: Fish e
    Common Name: Coho salmon or silver salmon
     Scientific Name: Oncorhynchus kisutch
     Toxicity: 6.6 mg/l
     Test: 48h LC50
  • Organism Type: Fish e
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 85 mg/l
     Test: 48h LC50
  • Organism Type: Fish g
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 56 mg/l
     Test: 48h LC50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: >5000 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.