Chemical Property of Fluorapatite
Chemical Property:
- PSA：288.18000
- Density:3.205 g/cm3
- LogP:-1.83800
- Water Solubility.:Soluble in water and hydrochloric acid.
- Hydrogen Bond Donor Count:0
- Hydrogen Bond Acceptor Count:13
- Rotatable Bond Count:0
- Exact Mass:503.671619
- Heavy Atom Count:21
- Complexity:36.8
- Purity/Quality:
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99%, *data from raw suppliers
Fluorapatite *data from reagent suppliers
Safty Information:
- Pictogram(s):
- Hazard Codes:
- MSDS Files:
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SDS file from LookChem
Useful:
- Canonical SMILES:[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2]
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Description
This apatite is formed by the same methods as the
calcium apatite analog. The solid-state reaction required is:
6SrHPO4 + 3SrCO3 + SrF2 + heat?Sr10F2(PO4)6
+ 3CO2 + 3H2O
It has also been prepared by the solution method:
10SrF2 (aq) + 6Na3PO4 (aq)?Sr10(F)2(PO4)6 (solid)
+ 18NaF (aq) + 2HCl
However, the product is contaminated by Na+ ions
and must be washed thoroughly to obtain a pure product.
A small amount of hydroxyapatite may also be present.Strontium fluorapatite has been shown to be one of
the best hosts for Nd3+ doping among apatite crystals.
Neodymium-doped strontium fluorapatite crystal has
been grown by the Czochralski method. The data of
thermal expansion and specific heat of the crystal have
been measured. The thermal expansion coefficients
along X and Z direction are a1 =11.4×10-6/K and
a3 = 12.3×10-6/K, respectively. The specific heat is
110 cal/mol K at 330 K. The measured absorption
spectra from 400 to 850 nm showed that the crystal has
absorption peaks around 805.5 nm, and the absorption
coefficients at 805.5 nm are 16.05/cm and 5.59/cm for
p and a-polarization, respectively.
Strontium fluoroapatite does not have a CAS number
even though it is still used as a phosphor for compact
and standard fluorescent lamps. It has been the subject
of numerous academic studies but has found little or
no usage in industry except those already mentioned.
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Uses
Apatite is one of a few minerals produced and used by biological micro-environmental systems. The primary use of apatite is in the manufacture of fertilizer, it is a source of phosphorus. It is occasionally used as a gemstone. Green and blue varieties in finely divided form, are pigments with excellent covering power.
