Bone ash is a source of calcium phosphate. It is used as a flux in clay bodies- notably Bone China, which is known for its thinness and translucency. Also used as an opacifier in glazes and to assist in formation of opalescence (as in Chun glazes.)
Many materials used by potters in glazes and clay are potentially hazardous substances. We at Bailey feel you should take precautions to minimize exposure.
1. Handle materials carefully. Avoid spillage. Keep materials covered.
2. Wear a NIOSH approved respirator. Avoid breathing all dusts.
3. Wear rubber gloves when glazing or painting with oxides or stains.
4. Keep your workspace clean, free of dust.
5. Wash your work clothes separately from other clothing.
6. Do not eat or smoke in your workspace.
7. Use a wet mop for cleaning or a toxic dust vacuum cleaner.