Editing Unsymmetrical dimethylhydrazine (section)

== Safety ==
Hydrazine and its methyl derivatives are toxic but [[LD50]] values have not been reported.<ref>{{Cite web|edition=4 |url=https://www.fishersci.com/shop/msdsproxy?productName=AC116320100&productDescription=UNSYM-DIMETHYLHYDRAZINE%252C+10ML&catNo=AC116320100&vendorId=VN00032119&storeId=10652 |title=unsym-Dimethylhydrazine Safedy data |access-date=23 January 2018 |archive-date=6 July 2018 |archive-url=https://web.archive.org/web/20180706161800/https://www.fishersci.com/shop/msdsproxy?productName=AC116320100&productDescription=UNSYM-DIMETHYLHYDRAZINE%252C+10ML&catNo=AC116320100&vendorId=VN00032119&storeId=10652 |url-status=dead }}</ref> It is a precursor to [[dimethylnitrosamine]], which is carcinogenic.<ref>{{cite journal|title=Human health perspective of environmental exposure to hydrazines: A review
|author=Gangadhar Choudhary, Hugh Hansen
|journal=Chemosphere
|volume=37
|year=1998|issue=5
|pages=801–843
|doi=10.1016/S0045-6535(98)00088-5|pmid=9717244
|bibcode=1998Chmsp..37..801C
}}</ref>
According to scientific data, usage of UDMH in rockets at [[Baikonur Cosmodrome]] has had adverse effects on the environment.<ref name="ijbch.kaznu.kz">{{cite journal|url=http://ijbch.kaznu.kz/index.php/kaznu/article/view/172|title=The impact of the cosmodrome 'Baikonur' on the environment and human health|first1=P. Kh|last1=Abdrazak|first2=K. Sh|last2=Musa|date=21 June 2015|volume=8|issue=1|pages=26–29|access-date=2 August 2016|via=ijbch.kaznu.kz|journal=International Journal of Biology and Chemistry|doi=10.26577/2218-7979-2015-8-1-26-29 |archive-date=8 August 2016|archive-url=https://web.archive.org/web/20160808090550/http://ijbch.kaznu.kz/index.php/kaznu/article/view/172|url-status=live|doi-access=free}}</ref>
One such instance was the [[Nedelin catastrophe]] in 1960 when UDMH and [[dinitrogen tetroxide]] leaked from a rocket after an explosion and killed a number of bystanders through burn injuries and its toxicity.