Bone Ash is chemically inert and free of organic matter.
Bone ash powder has many desirable properties.
The powder has high thermal stability.
The calcium acts as a flux, and the phosphorous acts as a glass former.
The powder adheres well to metal, and will not drip or run.
The powder does not separate into smaller parts, which would require extra mixing.
It is an important source of calcium phosphate/
Bone ash is relatively easy to clean up as well.