I took what I thought to be the potassium permanganate and started experimenting on wet and dry canvas with varying solution strengths and was mystified that it wasn’t purple but put it down the powder’s age . . . on the outside, we all fade somewhat however I was even more surprised when it stayed the same on exposure
All these years I thought I had a small jar with potassium permanganate in it but apparently I don’t . . . if it is, something very strange has happened to it as it should start as a purple solution then oxidize and turn brown. My mother used to use it when I was a kid to touch up the toes of our scuffed brown leather shoes so I would age the contents at more than 60 years. Instead, it could be some other oxide, perhaps from when I was doing some pottery.
If anyone has any idea what it could be, please let me know. I love the colour as it is . . . somewhere between Payne’s grey and indigo.
Now for some fade tests. . . .