Re: WoDo White Matte

None of the ingredients in this recipe are toxic; but to judge it's safety, one
would need to know what temperature you would be firing and then it would have
to be broken down to make sure it has enough alumina and silica to be a good,
functional glaze. Also, if you intend to use colorants with this glaze, the
colorants and amounts would have to be taken into consideration.

Regards,
June
http://www.angelfire.com/art2/shambhalapottery/