Chemistry:Asulam

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Asulam is a herbicide invented by May & Baker Ltd, internally called M&B9057,[1] that is used in horticulture and agriculture to kill bracken[2][3] and docks.[4] It is also used as an antiviral agent. It is currently marketed, by United Phosphorus Ltd - UPL, as "Asulox" which contains 400 g/L of asulam sodium salt.

European phase-out and ban

Asulam was declared not approved by the Commission Implementing Regulation (EU) No 1045/2011 of 19 October 2011 concerning the non-approval of the active substance asulam.[5] Concerns included: lack of evidence concerning the fate of the toxic metabolite sulfanilamide and other metabolites; the poorly characterised nature of the impurities potentially present in the technical-grade product; toxicity to birds. This decision is given in with Regulation (EC) No 1107/2009 of the European Parliament and of the Council concerning the placing of plant protection products on the market, and amending Commission Decision 2008/934/EC.[6]

References

  1. ↑ "ChemSpider – Asulam – C8H10N2O4S". http://www.chemspider.com/Chemical-Structure.17707.html?rid=5a4054d2-3aa3-4364-942b-6e3bfa42cd9c. Retrieved 30 September 2011. 
  2. ↑ R. J. Pakemana, M. G. Le Ducb and R. H. Marrs (1998). "An assessment of aerially applied asulam as a method of long-term bracken control". Journal of Environmental Management 53 (3): 255–262. doi:10.1006/jema.1998.0207. Bibcode: 1998JEnvM..53..255P. 
  3. ↑ C. S. R. Snow and R. H. Marrs (1997). "Restoration of Calluna heathland on a bracken Pteridium-infested site in north west England". Biological Conservation 81 (1–2): 35–42. doi:10.1016/S0006-3207(96)00147-4. Bibcode: 1997BCons..81...35S. 
  4. ↑ R. I. Speight and J. B. Whittaker (1987). "Interactions Between the Chrysomelid Beetle Gastrophysa viridula, the Weed Rumex obtusifolius and the Herbicide Asulam". The Journal of Applied Ecology 24 (1): 119–129. doi:10.2307/2403791. Bibcode: 1987JApEc..24..119S. 
  5. ↑ Commission Implementing Regulation (EU) No 1045/2011 of 19 October 2011 concerning the non-approval of the active substance asulam, in accordance with Regulation (EC) No 1107/2009 of the European Parliament and of the Council concerning the placing of plant protection products on the market, and amending Commission Decision 2008/934/EC
  6. ↑ Regulation (EC) No 1107/2009 of the European Parliament and of the Council of 21 October 2009 concerning the placing of plant protection products on the market and repealing Council Directives 79/117/EEC and 91/414/EEC (consolidated tex)

Further reading

  • Asulam in the Pesticide Properties DataBase (PPDB)




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