500g BONE ASH SUBSTITUTE

Dicalcium phosphate. A substitute for bone ash in glazes. It is a source of both calcium oxide, an important glaze flux, and phosphorous pentoxide, a glass-former like silica and boric oxide. To replace 100 g bone ash (10CaO.3P2O3.H2O) use 100 g Bone Ash.

For more information on dicalcium phosphate, see the Digitalfire.com Reference Library of ceramic materials. 

For more information on bone ash, see the Digitalfire.com Reference Library of ceramic materials.