Rust in salt, is it safe? I bought a small tin of Jacobsen Sea Salt which is all the rage in Portland, Oregon. I left it in my back pack for a few weeks and when I took it out and opened it up I am noticing some rust from the tin on the top of the salt flakes around the edges. 

Is it still safe? It's not that much but its still concerning.
Rust is iron oxide.  The body needs some iron.  We all drink some rust from pipes.  

To be toxic the only number I found is 200 milligrams per kilogram is lethal. But I have a degree in chemical engineering and I am not sure what they mean by that.  

As for iron the lethal dose is about 45 mg / day. 

Just saw the picture - not enough to hurt you.