Oh wow 😯. I do like peanut butter but I didn't know about the oxalate content. Now I have to research this. I have this new hobby of cyanotype and the newformula by Mike Ware is what I'm using. It contains oxalates. I never touch the stuff as I apply it. But sometimes I stick my fingers into the developing bath without gloves. Hmm. Well now I'm going to wear gloves. But I also want to read the MSDS.