As Stated I THINK, I read that chrome tanned leather had salt in it. Not to be confused with it DOSE have...
I have not seen Corrosion on any Guns or Knives due to Holsters of any type ( I Do not store Mine holstered ).
By all means I am Defiantly Not a Chemist Nor a Expert in anything having to do with the Tanning Process (or Leather working for that manner), But my interest stretch far and wide . I let my fingers do the walking all over this here Internet, and I'd say that I retain about 60% of what I see and Read...
Ill have to do some investigation and see what I find. I Have Avoided Using Chrome Tanned Leather for Holsters and Sheaths Based on that info I "Read" and that may have been Ignorant of me considering I didn't Know the source.