The formula for bone ash is generally represented as Ca5(OH)(PO4)3.
Bone ash is a white, granular substance produced by calcining (heating at high temperatures in the presence of oxygen) animal bones. This process removes organic material and leaves behind a mineral residue primarily composed of calcium phosphate. The exact composition can vary slightly depending on the source bones and calcination process, but the given formula is a good approximation of the main component.
Here's a breakdown of the components within the formula:
- Ca: Represents Calcium
- OH: Represents Hydroxide
- PO4: Represents Phosphate
The chemical name corresponding to the formula Ca5(OH)(PO4)3 is Hydroxyapatite.
The approximate percentage composition of typical bone ash is:
- Calcium Oxide (CaO): ~55.82%
- Phosphorus Pentoxide (P2O5): ~42.39%
- Water (H2O): ~1.79%
The relative amounts of these compounds change depending on the bone source.
Bone ash is used in various applications, including:
- Fertilizer: As a source of phosphorus and calcium for plant growth.
- Ceramics: As an ingredient in bone china to increase translucency and strength.
- Polishing compounds: Due to its abrasive properties.
- Dental products: Hydroxyapatite is similar to the mineral component of teeth, so it's used in some toothpastes and other dental care products.
