Talk:Pyrethrin

message: Is snopes really not a reliable source?  Given that their raison d'être is dealing with controversy, they usually go to considerable length to check their facts lest they risk their reputation as a good place to go when you suspect something might be a myth.  I've done a brief search, and can't find anything detailing snopes as a non-reliable source.  — Preceding unsigned comment added by 93.97.48.95 (talk) 20:45, 28 September 2012 (UTC)
replies: text: There is not a single source on the site that gives information past that page.  It is just words on a page, which can say anything that anyone wants.  WP:Verify requires a bit more than that. If you can't chase a subject back further than the original page and there is no research being discussed on the page, then it appears to be conjecture.JSR (talk) 20:53, 28 September 2012 (UTC)
replies: text: fair enough.  You're right - there's no reference link to the quoted article or even the title of where it came from.  I'm not about to film myself being sprayed in the face with pyrethrin, although common sense + the paragraph below about toxic effects on humans should suggest that the snopes article is probably true!  I'll see if I can dig up the original source of the quoted attack on Amish.  — Preceding unsigned comment added by 93.97.48.95 (talk) 21:06, 28 September 2012 (UTC)
thread_title: pyrethrin as a weapon/snopes not a reliable reference

message: This statement is very misleading, "The study indicated that mothers of autistic children were twice as likely to have washed a pet dog with a flea shampoo containing pyrethrin while they were pregnant." The study goes on to say the validity of the study could be biased based off the fact that the figures used were self-reported and retro-active. Reference: http://www.autismspeaks.org/science/scientificmeetings/imfar_2008_abstract_autism_risk_household_pesticide.php  
The statement should be ammended so it doesn't give the overwhelming impression that autism and pyrethrin use has been proven.
67.128.135.54 (talk) 22:40, 16 December 2008 (UTC)
thread_title: misleading statement

message: There is little information here on how pyrethrin works, does it attack nerves in the body or does it attack brain receptors? Which ones, etc. I am unable to locate this data anywhere online.  —Preceding unsigned comment added by 71.113.76.182 (talk) 21:01, 8 July 2009 (UTC)
thread_title: How it works

message: Is there any known neutralizer to destroy pyrethrin stopping it's effects? 
71.112.195.162 (talk) 22:07, 27 July 2009 (UTC)
thread_title: Neutralizer

message: The summary says that the two pyrethrins differ in the oxidation state of a single carbon atom.  Yet according to the diagrams, they also differ in the number of carbon atoms.  —Preceding unsigned comment added by 68.185.94.153 (talk) 03:59, 31 October 2009 (UTC)
thread_title:  Describing the difference 

message: I am a bit concerned that some of the text in this article may violate copyright laws.  Specifically, some of the article is an exact quotation of parts of this article... http://pmep.cce.cornell.edu/profiles/extoxnet/pyrethrins-ziram/pyrethrins-ext.html
Opinions?  —Preceding unsigned comment added by 69.253.201.14 (talk) 21:38, 19 September 2010 (UTC)
thread_title: Copyright Violation?

message: Nanograms or milligrams? I have a problem with this: 'Children who were more highly exposed in personal air samples (≥4.34 ng/m3) scored 3.9 points lower on the Mental Developmental Index than those with lower exposures.' I think it's a typing error and it should be mg instead of ng  — Preceding unsigned comment added by 109.166.133.188 (talk) 01:27, 6 September 2011 (UTC)
thread_title: Quantity assessment

message: It should be mentioned in this article that this chemical is the primary one used for aircraft disinsection and that material health concerns wrt this usage have been identified as far back as 1996.
http://www.epa.gov/PR_Notices/pr96-3.html  — Preceding unsigned comment added by 192.223.158.45 (talk) 14:05, 13 June 2012 (UTC)
thread_title:  Aircraft Disinsection (layman: aircraft insecticide fumigation) 

message: These are sources that we can use to expand the article.
* "Pyrethrins." Pyrethrins. Extension Toxicology Network, Mar. 1994. Retrieved. 22 Feb. 2015.
* Hansen, M. R., Jørs, E., Lander, F., Condarco, G., & Schlünssen, V. (2014). Is Cumulated Pyrethroid Exposure Associated With Prediabetes? A Cross-sectional Study. Journal of Agromedicine, 19(4), 417–426. doi:10.1080/1059924X.2014.945708
* Umina PA, Edwards O, Carson P, Van Rooyen A, Anderson A. High levels of resistance to carbamate and pyrethroid chemicals widespread in Australian Myzus persicae (Hemiptera: Aphididae) populations. J Econ Entomol. 2014 Aug;107(4):1626-38. PubMed PMID: 25195456.
* Lambkin TA, Furlong MJ. Application of spinosad increases the susceptibility of insecticide-resistant Alphitobius diaperinus (Coleoptera: Tenebrionidae) to pyrethroids. J Econ Entomol. 2014 Aug;107(4):1590-8. PubMed PMID: 25195452.
Egilmore15 (talk) 19:42, 22 February 2015 (UTC)
thread_title: Bibliography of Potential Sources (2015)

message: Hello fellow Wikipedians,
I have just added archive links to  on Pyrethrin. Please take a moment to review my edit. If necessary, add  after the link to keep me from modifying it. Alternatively, you can add  to keep me off the page altogether. I made the following changes:
*Added archive http://web.archive.org/web/20100526030749/http://pyrethrum.org:80/index.php?p=1_5_Pyrethrum to http://www.pyrethrum.org/index.php?p=1_5_Pyrethrum
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Cheers.—cyberbot IITalk to my owner:Online 08:06, 28 February 2016 (UTC)
thread_title:  External links modified 

message: The table for boiling points and vapor pressures do not follow well-known general trends in molecular weight and structure versus volatility, and disagree with themselves. Cinerin I has the lowest BP listed (which follows from it's smallest MWT), but it has a vapor pressure about 18-fold lower than Pyrethrin I - itself with a stated BP about 42-44 C higher. This does not make any sense, considering how slight the structural differences are. 
It seems that there is one source for Pyrethrin I, and another source for the other 5 compounds, regarding vapor pressure, as known general trends accurately order compounds by vapor pressure for these 5 only. Extrapolated, Pyrethrin I should have a vapor pressure of 9.8 x 10^-7 mmHg. 
The accurate evaluation of volatility of these compounds is relevant in the emergent field of industrial separation of cannabinoids like THC by vacuum distillation.  — Preceding unsigned comment added by 96.78.61.233 (talk) 00:12, 23 October 2018 (UTC)
thread_title:  Volatility Data 

message: Both references are to a business web page that makes the statements, but itself has no references to primary sources:  "History." Pyrethrum Nature's Insecticide. MGK, n.d. Web. 23 Apr. 2015.
Tsu Dho Nimh (talk) 00:36, 5 March 2019 (UTC)
thread_title:  History 

message: the article wording wrongly implies that spiders and ticks are insects Ribsci (talk) 17:41, 9 July 2020 (UTC)
thread_title:  insects inaccuracy 

message: — Assignment last updated by Spmg98 (talk) 17:49, 28 September 2022 (UTC)
thread_title: Wiki Education assignment: Toxicology

message: Pyrethrin can be persistent, based on net hydrophobic properties and because its many double bonds it may react forming some organic halides as derivatives, among other kinds of organic compounds, but in its original molecular structure Pyrethrin is not an organic halide. It doesn't contain any halogen atom as part of the covalent bonds of the organic compound. It may form some halides if some reactions occur, but it is not an organic halide when named pyrethrin. — Preceding unsigned comment added by MLearry (talk • contribs) 20:02, 18 January 2023 (UTC)
replies: text: Indeed, it definitely is not. That was added by User:AF1798; thanks for removing it. The cited ref is of uncertain reliability anway (MDPI). DMacks (talk) 21:35, 18 January 2023 (UTC)
thread_title:  Pyrethrin is not an organic halide