Tags: Chemical Compound, Chemical Substance.
Ruthenium tetroxide (Ruthenium(VIII) oxide) is the inorganic compound with the formula RuO4. It is a colourless liquid but samples are typically black due to impurities. As expected for a charge-neutral symmetrical oxide it is quite volatile. The analogous OsO4 is more widely used and better known. One of the few solvents in which it forms stable solutions is CCl4.
