Difference between revisions of "Methoxychlor"

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{{Definition|title=methoxychlor  
 
{{Definition|title=methoxychlor  
  
|definition= Methoxychlor is a chlorinated methoxyphenylethane used as an insecticide whose activity is due to either
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|definition= Methoxychlor is a [[organochlorine pesticides|organochlorine pesticide]] which works both by contact and ingestion<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00147_Background%20document%20on%20Methoxychlor.pdf OSPAR Commission, 2004: OSPAR background document on methoxychlor]</ref>.}}
contact with or ingestion by the targeted pest.<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00147_Background%20document%20on%20Methoxychlor.pdf OSPAR Commission, 2004: OSPAR background document on methoxychlor </ref>}}
 
  
 
== Notes ==
 
== Notes ==
  
The use of methoxychlor as a [[pesticide]] ceased in most countries around 1990. In Germany and Belgium use continued until 1995 and 2000. In the European Union its use has been phased out since 2003.
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{| class="toccolours" border="1" style="float: right; clear: right; margin: 0 0 1em 1em; border-collapse: collapse;"
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! bgcolor="#FF8888" | Methoxychlor
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| align="center" bgcolor="#FFFFFF" | [[Image:Methoxychlor.png|150px|Methoxychlor ]]  
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|-
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! bgcolor="#8888FF" | Formula
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| align="center" | C<sub>16</sub>H<sub>15</sub>Cl<sub>3</sub>O<sub>2</sub>
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|}
  
Methoxychlor doesn't evaporate much, it has a low water solubility (maw 0,1 mg/l) and it [[adsorption|adsorbs]] to particles. In aerobe conditions it's not degradable, it is however under anaerobe conditions.  
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The use of methoxychlor as a [[pesticide]] ceased in most countries around 1990. In Germany and Belgium it continued until 1995 and 2000. It has been phased out in the European Union since 2003.
Methoxychlor is very toxic, concentrations of 0,8 are lethal to some zooplankton species, while fish die at concentrations above 50 µg/l. For [[pollution and marine mammals|marine mammals]] and [[pollution and sea birds|sea birds]] it is considered to be less toxic. However, methoxychlor is expected to a [[endocrine disrupting compounds|endocrine disrupting compound]] and might therefore affect these animals at low concentrations. It has a high tendency towards [[bioaccumulation]] and [[biomagnification]]. This, although fish seem to be able to metabolize methoxychlor.  
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Methoxychlor doesn't evaporate much, it has a low water solubility (0,1 mg/l) and it [[adsorption|adsorbs]] to particles. In aerobe conditions it's not degradable, it is however under anaerobe conditions.  
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Methoxychlor is very [[toxic]], short exposure to concentrations of 0,8 µg/l is lethal for some zooplankton species, [[pollution and benthic fishes|fish]] die at concentrations above 50 µg/l. For [[pollution and marine mammals|marine mammals]] and [[pollution and sea birds|sea birds]] it is considered to be less toxic. However, methoxychlor is presumed to be a [[endocrine disrupting compounds|endocrine disrupting compound]] and might therefore affect these animals at low concentrations.  
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It has a high tendency towards [[bioaccumulation]] and might [[biomagnification|biomagnify]] through [[food chain|food chains]], although fish seem to be able to metabolize methoxychlor<ref name = OECD>[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00147_Background%20document%20on%20Methoxychlor.pdf OSPAR Commission, 2004: OSPAR background document on methoxychlor]</ref>.  
  
 
There is little or no information available on the occurrence of methoxychlor in the marine environment.
 
There is little or no information available on the occurrence of methoxychlor in the marine environment.
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== Environmental standards and legislation ==
 
== Environmental standards and legislation ==
  
[[OSPAR List of priority substances|Included in the OSPAR list of substances of priority action (as hexachlorocyclohexane)]]  
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[[OSPAR List of priority substances|Included in the OSPAR list of substances of priority action]]  
 
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== See also ==
 
== See also ==
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[http://www.vliz.be/projects/endis/EDnorth.php?showchemprop=true&showeffects=true&chemeffects=true&chemid=355 Methoxychlor on the ED North Database]
  
 
[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00147_Background%20document%20on%20Methoxychlor.pdf  OSPAR background document on methoxychlor]  
 
[http://www.ospar.org/documents%5Cdbase%5Cpublications%5Cp00147_Background%20document%20on%20Methoxychlor.pdf  OSPAR background document on methoxychlor]  
  
[http://www.vliz.be/projects/endis/EDnorth.php?showchemprop=true&showeffects=true&chemeffects=true&chemid=355 Methoxychlor on the ED North Database]
 
 
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[[Category:Coastal and marine pollution]]
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{{author
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|AuthorID=19826
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|AuthorFullName=Daphnis De Pooter
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|AuthorName=Daphnisd}}
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[[Category:Toxicity chemicals]]

Latest revision as of 13:25, 9 August 2020

Definition of methoxychlor:
Methoxychlor is a organochlorine pesticide which works both by contact and ingestion[1].
This is the common definition for methoxychlor, other definitions can be discussed in the article

Notes

Methoxychlor
Methoxychlor
Formula
C16H15Cl3O2

The use of methoxychlor as a pesticide ceased in most countries around 1990. In Germany and Belgium it continued until 1995 and 2000. It has been phased out in the European Union since 2003.

Methoxychlor doesn't evaporate much, it has a low water solubility (0,1 mg/l) and it adsorbs to particles. In aerobe conditions it's not degradable, it is however under anaerobe conditions.

Methoxychlor is very toxic, short exposure to concentrations of 0,8 µg/l is lethal for some zooplankton species, fish die at concentrations above 50 µg/l. For marine mammals and sea birds it is considered to be less toxic. However, methoxychlor is presumed to be a endocrine disrupting compound and might therefore affect these animals at low concentrations.

It has a high tendency towards bioaccumulation and might biomagnify through food chains, although fish seem to be able to metabolize methoxychlor[1].

There is little or no information available on the occurrence of methoxychlor in the marine environment.


Environmental standards and legislation

Included in the OSPAR list of substances of priority action


See also

Methoxychlor on the ED North Database

OSPAR background document on methoxychlor


References

The main author of this article is Daphnis De Pooter
Please note that others may also have edited the contents of this article.

Citation: Daphnis De Pooter (2020): Methoxychlor. Available from http://www.coastalwiki.org/wiki/Methoxychlor [accessed on 31-10-2024]