Friday, February 7, 2014

Acephate and how its purity affects its effectiveness


Acephate (known as Orthene® commercially), is one of the main ingredients of insecticide formulation that play a major role in pest control. It aids in controlling a wide range of biting and sucking insects, such as aphids, including resistant species, in fruit, vegetables and flower crops. 
                     



Structural formula of Acephate
IUPAC name: N-(Methoxy-methylsulfanylphosphoryl)acetamide
Mr:183.17g mol-1
Polar
Thermally stable


Impurities that are relevant to Acephate product include:

  • O,O-dimethyl phosphoroamidothioate
  • O,O-dimethyl N-acetylphosphoroamidothioate
  • O,S-dimethyl phosphoroamidothioate (methamidophos)


These aforementioned impurities of the insecticide lead to lower effectiveness as a insecticidally active compound and purity as well as concentration is crucial to obtaining the best insecticide. Thus we were curious as to how pure the insecticide from the company Orthene® is when compared to technical products from the Research Institute of Agrochemical Technology, and with this information it can be deduced if the product will be extremely effective or not.
Also, we would like to find out if the method we had picked would also be an effective evaluation method for the testing of acephate purity
 
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