Synthetic bone ash or Dicalcium Phosphate CaHPO4 is a source of calcium and phosphate obtained by processing rock phosphate into phosphonic acid and reacted with calcium carbonate limestone. Basically it is a synthetic bone ash calcium phosphate free of organic matters.
As a synthetic bone ash containing a minimum 19% phosphrous and a maximum 28% calcium content is slightly water soluble as a slow release soil fertiliser. It is a source of calcium and phosphrous in animal livestock feed for horses and poultry.
Bone ash in ceramics formulation is a flux for glazes as calcium oxide and phosphrous pentaoxide is a glass former like silica and boric oxide. It is more stable in firing and less affected by other variables in the kiln. A much preferred use in the production of bone china for its translucency and as in opaque white glaze formulation.
