*Pertechnetate can bereact reduced bywith {{chem|link=Hydrogen sulfide|H|2|S}} to give {{chem|Tc|2|S|7}}.<ref>{{cite book|last1=Emeléus|first1=H. J.|url=https://books.google.com/books?id=-SnCsg5jM_kC&pg=PA26|title=Advances in Inorganic Chemistry and Radiochemistry, Volume 11|last2=Sharpe|first2=A. G.|date=1968|publisher=Academic Press|isbn=978-0-08-057860-6|pages=26}}</ref>
*Pertechnetate iscan also be reduced to Tc(IV/V) compounds in alkaline solutions in nuclear waste tanks without adding catalytic metals, reducing agents, or external radiation. Reactions of mono- and disaccharides with {{chem|{{simpleNuclide|Tc|99|m}}|O|4|-}} yield Tc(IV) compounds that are water-soluble.<ref>{{cite journal | author = D. E. Berning, N. C. Schroeder and R. M. Chamberlin | title = The autoreduction of pertechnetate in aqueous, alkaline solutions | year = 2005 | journal = [[Journal of Radioanalytical and Nuclear Chemistry]] | volume = 263 | issue = 3| pages = 613–618 | doi = 10.1007/s10967-005-0632-x| s2cid = 95071892 | url = https://zenodo.org/record/1232814 }}</ref>
