BONE ASH: Ca₃(PO₄)₂

Ca₃(PO₄)₂ It has a chemical formula. Bone Chine is the raw material found in bone porcelain, which we know as porcelain. It is also used in some glaze recipes. At least 37% bone ash is used in Bone China porcelains. It gives light transmittance and strength to porcelain. Bone China porcelains were first produced in England at the end of the 18th century. It has attracted all the people of the world, including the noble families of Europe, with the pure appearance and soft texture of transparency and has earned a permanent place for itself as the highest quality porcelain variety.

Sold as noodles.

Analysis:

	% age
Silica (SiO₂)	1.57
Potash (K₂O)	0.12
Titania (TiO₂)	0.02
Soda (Na₂O)	0.74
Alumina (AlO)	0.44
Phosphorus Pentoxide (PO₅)	40.68
Ferric Oxide (Fe₂O₃)	0.02
Lime (CaO)	52.34
Barium Oxide (BaO)	0.13
Magnesia (MgO)	1.16
Lead Oxide (PbO)	<0.02
Loss on Ignition at 1200°C	2.08

Bone China Porcelain Recipe

35% Noodle Calcium Phosphate (please take in to account the moisture content)

25% Feldspar (Maximum 5% retained on a 45 micron sieve)

15% OKA or AK Prime Kaolin

10% Existing Kaolin

3% Ukraine Clay

2% Bentonite

4% Wollastonite

6% Quartz (63 or 45 micron with the 45 micron better)