Date Submitted : |
August 26, 2012 |
Topic / Subject : |
pottery/glaze chemicals |
Message : |
I have many bags of chemicals that my late husband used in his pottery business. They have been sitting for almost 20 years. Most are still dry and bagged. I'm wondering if they are still usable or if they have an expired shelf life. If they are unsable, can I can put them in with my garbage or do they need special handling? Among them are magnesium carbonate, lead bisilate, lithium carbonate, cobalt oxide, gerstley borate, calcium kaolin and chromium oxide.
Thanks for your help.
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