Ruthenium Tetroxide Aqueous 0.5% Sol.
In Crystal form: RuO4 F.W. 165.70 CAS #20427-56-96
m.p. 25.4 deg. C b.p. 40 deg. C
Ruthenium tetroxide is very similar to Osmium tetroxide, and is used as a fixation/staining agent for electron microscopy. Ruthenium tetroxide offers excellent staining of saturated and unsaturated polymer materials as well as stabilizing thin sections under the bombardment of the electron beam.
NOTE: Penetration of ruthenium tetroxide into the tissue is poor.