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Tebuthiuron

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Tebuthiuron

Tebuthiuron[1][2][3][4][5]
Identifiers
CAS number  YesY
PubChem
ChemSpider
EC number
KEGG
ChEMBL
Jmol-3D images Image 1
Properties
Molecular formula C9H16N4OS
Molar mass 228.31 g mol−1
Appearance Off-white to buff colored crystalline solid
Density 1.186 g/cm3
Melting point 163.19 °C (mean or weighted MP)
Boiling point 394.23 °C (Adapted Stein & Brown method)
Solubility in water 2500 mg/L
Hazards
MSDS ChemAdvisor MSDS
R-phrases R50, R53
S-phrases (S2), S37, S60, S61
Main hazards Xn (harmful), N (dangerous for the environment)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)

Tebuthiuron is a nonselective broad spectrum herbicide of the urea class.[6] It is used in a number of herbicides manufactured by Dow AgroSciences, and is sold under several trade names, depending on the formulation. It is used to control weeds, woody and herbaceous plants, and sugar cane.[1] It is absorbed by the roots and transported to the leaves, where it inhibits photosynthesis.[4][7]

The Environmental Protection Agency considers tebuthiuron to have a great potential for groundwater contamination, due to its high water solubility, low adsorption to soil particles, and high persistence in soil (its soil half-life is 360 days).

In 2010, tebuthiuron was deliberately used in an act of vandalism to poison the live oak trees at Toomer's Corner on the Auburn University campus, following the 2010 Iron Bowl.[7][8]

References

  1. ^ a b "Pesticide Information Profile Tebuthiuron". Cornell University. Sep. 1993. Retrieved 17 February 2011. 
  2. ^ "1-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea".  
  3. ^ "Tebuthiuron".  
  4. ^ a b "Tebuthiuron Herbicide Fact Sheet" (PDF).  
  5. ^ "EC#: 251-793-7".  
  6. ^ Alan Wood (2010). "Herbicides". Retrieved 17 February 2011. 
  7. ^ a b Dr. Stephen Enloe; Dr. Scott McElroy (15 February 2011). "The Poisoning of Toomer's Oaks" (PDF). Auburn University. Retrieved 17 February 2011. 
  8. ^ "Man arrested in poisoning of Auburn University landmark live oaks".  

External links

  • Dow AgroSciences MSDS on Spike 80DF
  • Dow AgroSciences website on Spike 80DF
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