Can you use lye water (potassium hydroxide solution) to bleach bones?
If you're near a dairy farm or any place that uses a "Trench Silo" I have a friend that buries cow & deer skulls in the pile in the Winter for a couple months & it leaves them clean enough that they can be electroplated with chrome for folks that like a modern touch. Hope it helps! I think some people cook them for extended periods of time.
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Use bleach, or sunlight. Potassium hydroxide might clean them up nicely, but it's not going to whiten them any more than that. L
If I remember correctly it turns bones into soft rubbery things.
I doubt it - It's normally used to make soap and is very caustic.