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LithiumBorate

Lithium borate, also known as lithium tetraborate (Li2B4O7)

• Solubility ~ 3 grams/100 ml
• This is not soluble enough for me to see it in this class of soluble ingredients. It sits at the low end of solubility. However I am going to try and test this and see if a solution has an impact on my clay.
• There is reasonable evidence that glazes that have both partially soluble forms of boron and lithium slowly form lithium borate crystals. Over time the crystals grow to a size where they need to be crushed and added back to the glaze where they will again grow.
• While the crystals are not exceedingly soluble 3% is not negligible either.

I am not a safety expert, or a chemist. Do not use this site as a primary source for safety, chemistry or disposal information.