# Does selenium sulfate corrode or otherwise react with metals?

I was just watching a cartoon called Motorcity, and they featured a real compound called selenium sulfate.

While I'm sure that the compound blowing up a detached steel [car part] on contact is just cartoon wackiness, I'm curious whether it actually does anything bad to any metals, especially since a close compound, selenium sulfide, is commonly used in shampoos.

Yes, selenium sulfide is well known and it is used in anti-dandruff shampoo but other sulfur-containing selenium compounds are not really well known. Selenium sulfate, properly selenium(II) sulfate, $\ce{SeSO4}$ is unknown to the best of my knowledge. The analogous tellurium compound has been synthesized recently, but still it is not a proper sulfate compound, rather it is actually an oxide-sulfate mixture type of compound.
$$\ce{Se + 2H2SO4 ->[\Delta] SeO2 + 2SO2 + 2H2O}$$
Selenium sulfite or properly selenium sulfoxide, $\ce{SeSO3}$, is however known.
• Just as an additional detail: "selenium sulfide" is actually selenium disulfide, $\ce{S=Se=S}$, and not some salt of $\ce{Se^n+}$ and $\ce{S^2-}$. – orthocresol Jul 31 '17 at 17:07