Ruthenium is a chemical element with symbol Ru and atomic number 44.
- Most ruthenium produced is used in wear-resistant electrical contacts and thick-film resistors. A minor application for ruthenium is in platinum alloys and as a chemistry catalyst.
- Small amounts of ruthenium are used to harden platinum and palladium and it can also be alloyed with these metals to make electrical contacts for severe wear resistance.
- The addition of 0.1% ruthenium improves the corrosion resistance of titanium a hundred times over.
- Ruthenium has catalytic properties; for example, hydrogen sulfide can be split by light in the presence of an aqueous suspension of cadmium sulfide particles loaded with ruthenium dioxide.
- Interestingly, ruthenium is used in some Parker pen nibs, such as the Parker 51 whose nib is marked ‘RU’, and consists of 96.2% ruthenium and 3.8% iridium(2).
- Ruthenium is a suspected carcinogen and its compounds strongly stain the skin. Ruthenium tetroxide (RuO4) is highly toxic.
Unknown, please consult with your doctor.
Source: Wikipedia, https://en.wikipedia.org/wiki/Ruthenium