Is Rhenium toxic

Answer 1

Rhenium is weakly radioactive. Naturally occurring rhenium consists of two isotopes. 62.6% of it is radioactive 187Rh, with the very long half life of 43,500,000,000. 37.4% of the rhenium is stable 185Rh.

Answer 2

We don't know. I don't mean I don't know, I mean nobody knows. In general it's safest to treat heavy metals as potentially toxic if you don't know for certain that they're not, and rhenium's atomic number of 75 isn't all that far from Mercury (80) or lead (82), both of which are known to be toxic. (It's also not all that far from gold at 79, but gold is kind of a special case due to its extremely low reactivity.)

In the few tests that have been done for acute toxicity, rhenium compounds don't appear to be especially dangerous: rhenium trichloride is only about ten times more toxic than table salt, for example. Whether it hangs around in the body like lead and mercury with similar effects is unknown, largely because there's so little of it around in the first place.

Answer 3

no