Ammonium chloride as leather hardener?

[Eriksen]

What is the right mix ratio for water and ammonium chloride in order to make a leather hardener? And what will be the right temperature for curing in an oven and for how long time does it need to be there?

 

[killgar]

You might have a better chance getting an answer in the Sheaths sub-forum- https://www.bladeforums.com/forums/sheaths-such.820/