Ecological Assessment of Storm Impacts

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Data Collection

Roundup

CAS Number: 38641-94-0

Basic Information

The chemical structure of Roundup Synonym(s): Glifonox; N-(phosphonomethyl)-, compd. with 2-propanamine (1:1); Glyphosate Amine; Glyphosate isopropylamine salt; Isopropylamine glyphosate; Isopropylamine salt of N-(phosphonomethyl) glycine
Formula: C6H17N2O5P
 Molecular Weight: 228.185
 Melting Point (°C): 200
 Contaminant Type: Roundup is an herbicide.

Half-Life (in soil unless otherwise noted)

  • t1/2: 174 days a
  • t1/2: 2-174 days c
    Formulation: Roundup Original

Toxicity Effects

  • Organism Type: Algae c
    Common Name: Green algae
     Scientific Name: Selenastrum capricornutum
     Toxicity: 2.6 mg/l
     Test: 96h EC50,S
     Formulation: Roundup Original
  • Organism Type: Crustaceans c
    Common Name: Daphnia
     Scientific Name: Daphnia magna
     Toxicity: 12.9 mg/l
     Test: 48h EC50,S
     Formulation: Roundup Original
  • Organism Type: Fish c
    Common Name: Bluegill
     Scientific Name: Lepomis macrochirus
     Toxicity: 5.8 mg/l
     Test: 96h LC50,F
     Formulation: Roundup Original
  • Organism Type: Fish e
    Common Name: Coho salmon or silver salmon
     Scientific Name: Oncorhynchus kisutch
     Toxicity: 22 mg/l
     Test: 4d LC50
  • Organism Type: Fish m
    Common Name: Rainbow trout
     Scientific Name: Oncorhynchus mykiss
    Toxicity: 8.3 mg/l
     Test: 96h LC50
  • Organism Type: Fish e
    Common Name: Chinook salmon or king salmon
     Scientific Name: Oncorhynchus tshawytscha
     Toxicity: 20 mg/l
     Test: 4d LC50
  • Organism Type: Fish e
    Common Name: Columbia River redband trout
     Scientific Name: Salmo gairdneri
     Toxicity: 15-26 mg/l
     Test: 4d LC50
  • Organism Type: Mammals g
    Common Name: Rat
     Scientific Name: Muridae (Family)
     Toxicity: >5000 mg/kg
     Test: LD50

Soil Organic Carbon/Water Partition Coefficients

  • Koc: 884 - 60,000 l/kg c
    Formulation: Roundup Original

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

a Beyond pesticides fact sheets. Pages retrieved November, 2003 from http://www.beyondpesticides.org. Beyond Pesticides, Washington, DC.
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.
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.