Uranyl formate

Uranyl formate

Uranyl formate (UO2(CHO2)2.H2O is a yellow free-flowing fine light-yellow powder.

It is occasionally used as a 0.5% or 1% acqueous negative stain in transmission electron microscopy (TEM) because it shows a finer grain structure than uranyl acetate. Uranyl formate does not easily go into solution, and once dissolved, has a rather limited lifetime as a stain, especially since it is quite sensitive to light, especially UV and will precipitate if exposed.

External links

* [http://chemistry.allinfoabout.com/periodic/u.html Uranium Facts]
* [http://www.2spi.com/catalog/chem/Uranyl_Formate.shtml Uranyl formate is the optimum negative stain for some TEM staining protocols]
* [http://www.biologicalprocedures.com/bpo/arts/1/70/m70.htm Uranyl formate usage in TEM]


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