en>Snaily: Corrected link pointing at the wrong topic. Dipole moment -> Electric dipole moment, instead of Electrical polarity.

2014-10-16T11:20:09Z

Corrected link pointing at the wrong topic. Dipole moment -> Electric dipole moment, instead of Electrical polarity.

en>Dchris02 at 04:08, 8 May 2013

2013-05-08T04:08:35Z

← Older revision		Revision as of 06:08, 8 May 2013
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	~~The writer~~'~~s name~~ is ~~Christy~~. ~~For many years she's been living~~ in ~~Kentucky~~ but ~~her husband desires them~~ to ~~transfer~~. ~~Credit authorising~~ is ~~how he makes cash~~. ~~To perform domino~~ is some ~~thing I truly enjoy performing~~.<br><br>~~Also visit my site: tarot card readings;~~ [http://www.~~zavodpm~~.ru/~~blogs~~/~~glennmusserrvji~~/~~14565~~-~~great~~-~~hobby~~-~~advice~~-~~assist~~-~~allow~~-~~you~~-~~get~~-~~going over at this website~~],		{{chembox
			\| verifiedrevid = 443345092
			\|Reference=<ref>''Merck Index'', 11th Edition, '''5905'''</ref>
			\|ImageFile=Methomyl Structural Formulae .V.1.svg
			\|ImageSize=200px
			\|IUPACName=(''E'',''Z'')-methyl ''N''-{[(methylamino)carbonyl]oxy}ethanimidothioate
			\|OtherNames=Lannate, Mesomile, Methomex, Nudrin
			\|Section1= {{Chembox Identifiers
			\| CASNo_Ref = {{cascite\|correct\|CAS}}
			\| CASNo=16752-77-5
			\| PubChem=5353758
			\| SMILES=CC(=NOC(=O)NC)SC
			}}
			\|Section2= {{Chembox Properties
			\|C=5\|H=10\|N=2\|O=2\|S=1
			\| MolarMass=162.20
			\| Appearance=Crystals
			\| Odor=Slight, sulfur-like<ref>[http://www.cdc.gov/niosh/npg/npgd0387.html CDC - NIOSH Pocket Guide to Chemical Hazards]</ref>
			\| Density=1.2946 g/cm<sup>3</sup>
			\| MeltingPt=78-79 °C
			\| BoilingPt=
			\| Solubility=58 g/L
			}}
			\|Section3= {{Chembox Hazards
			\| MainHazards=
			\| FlashPt=
			\| Autoignition=
			}}
			}}

			'''Methomyl''' is a [[carbamate]] [[insecticide]]. It was introduced in 1966, but its use is restricted because of its high toxicity to humans.<ref>[http://extoxnet.orst.edu/pips/methomyl.htm Methomyl] at Extension Toxicology Network</ref> Its current primary use is on [[alfalfa]] for [[forage]].<ref>[http://www.pesticideinfo.org/Detail_ChemUse.jsp?Rec_Id=PC35109 Methomyl] at PAN Pesticide Database</ref>
			The EU and UK have imposed these restrictions by allowing a maximum pesticide residue limit of 0.02 mg/kg for apples and oranges.{{Citation needed\|date=February 2012}} 0.02 mg/kg is the limit of detection.

			It has been found in residues on vegetables and spices in Thailand exceeding safety standards in 2012, due to not being listed on the [[Dangerous Substances Act]], along with [[carbofuran]], [[dicrotophos]] and [[EPN (insecticide)\|EPN]].<ref>{{cite news \| url = http://www.bangkokpost.com/news/local/302017/cancer-causing-chemical-residues-found-in-vegetables \| title = Cancer-causing chemical residues found in vegetables \| publisher = Bangkok Post \| date = 12/07/2012}}</ref>

			Methomyl is the active ingredient in commercial fly bait granules which are mixed with a [[cola]] drink to kill bothersome [[raccoon]], [[skunk]] and [[opossum]]. Using methomyl in this "off-label" way may be against the law in some of the United States. <ref>[http://dnr.wi.gov/news/BreakingNews_Print.asp?id=481 Conservation Warden Warns: Fly bait to control wild animals – illegal and a bad idea (Wisconsin Department of Natural Resources)]</ref><ref>[http://www.indianaeconomicdigest.net/main.asp?SectionID=31&SubSectionID=68&ArticleID=65569 Farm stores promoted poisoning raccoons, state chemist says]</ref>

			==Synthesis==

			Methomyl can be produced by reaction of [[methyl isocyanate]] and [[methylthioacetaldoxime]](also known as methomyl oxime)

			First preparing ester

			<math>{{\text{H}}_{\text{3}}}\text{C-}\underset{\underset{\text{O}}{\mathop{\text{ }\!\!\|\!\!\text{ }\!\!\|\!\!\text{ }}}\,}{\mathop{\text{C}}}\,\text{-OH+HS-C}{{\text{H}}_{\text{3}}}\xrightarrow{\text{30--50 }\!\!~\!\!\text{ }\!\!{}^\circ\!\!\text{ C}\text{,-}{{\text{H}}_{2}}O}{{\text{H}}_{\text{3}}}\text{C-}\underset{\underset{\text{O}}{\mathop{\text{ }\!\!\|\!\!\text{ }\!\!\|\!\!\text{ }}}\,}{\mathop{\text{C}}}\,\text{-S-C}{{\text{H}}_{\text{3}}}</math>

			Second preparing oxime from ester
			<math>{{\text{H}}_{\text{3}}}\text{C-}\underset{\underset{\text{O}}{\mathop{\text{ }\!\!\|\!\!\text{ }\!\!\|\!\!\text{ }}}\,}{\mathop{\text{C}}}\,\text{-S-C}{{\text{H}}_{\text{3}}}\text{+}{{\text{H}}_{\text{2}}}\text{NOH}\xrightarrow{-{{H}_{2}}O}\text{HO-N=}\underset{\text{C}{{\text{H}}_{\text{3}}}}{\mathop{\underset{\text{ }\!\!\|\!\!\text{ }}{\mathop{\text{C}}}\,}}\,\text{-S-C}{{\text{H}}_{\text{3}}}</math>

			Third preparing product from isocyanate and oxime.
			<math>{{\text{H}}_{\text{3}}}\text{C-N=C=O+HO-N=}\underset{\text{C}{{\text{H}}_{\text{3}}}}{\mathop{\underset{\text{ }\!\!\|\!\!\text{ }}{\mathop{\text{C}}}\,}}\,\text{-S-C}{{\text{H}}_{\text{3}}}\xrightarrow{\text{C}{{\text{H}}_{\text{2}}}\text{C}{{\text{l}}_{\text{2}}}\text{,30--50 }\!\!~\!\!\text{ }\!\!{}^\circ\!\!\text{ C}}\text{Methomyl}</math>

			==References==
			<references/>

			{{Cholinergics}}
			{{insecticides}}

			[[Category:Carbamate insecticides]]
			[[Category:Anticholinesterases]]
			[[Category:Endocrine disruptors]]

24.205.233.186: /* Related Topics */

2012-06-07T17:45:42Z

Sedimentation potential - Revision history

en>Snaily: Corrected link pointing at the wrong topic. Dipole moment -> Electric dipole moment, instead of Electrical polarity.

en>Dchris02 at 04:08, 8 May 2013

24.205.233.186: /* Related Topics */