Chemical Property of Barium hydroxyapatite
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Chemical Property:
- Vapor Pressure:1.41mmHg at 25°C
- Boiling Point:158°C at 760 mmHg
- PSA：288.18000
- LogP:1.03920
- Hydrogen Bond Donor Count:0
- Hydrogen Bond Acceptor Count:13
- Rotatable Bond Count:0
- Exact Mass:990.38141
- Heavy Atom Count:21
- Complexity:36.8
- Purity/Quality:
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99%, *data from raw suppliers
Safty Information:
- Pictogram(s):
- Hazard Codes:
- MSDS Files:
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SDS file from LookChem
Useful:
- Canonical SMILES:[O-2].[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[Ba+2].[Ba+2].[Ba+2].[Ba+2].[Ba+2]
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Description
Barium Hydroxyapatite is prepared by the aqueous reaction of
a soluble barium salt with trisodium phosphate:
10BaCl2 (aq) + 6Na3PO4 (aq)
?Ba10(OH)2(PO4)6 (s) + 18NaCl (aq) + 2HCl
Alternately, it can be prepared by the aqueous reaction
of the monobasic salt and the hydroxide at about
60–80°C with addition of NaOH to control pH to
a minimum of 10–11.
3Ba(H2PO4)2 (aq) + 2Ba(OH)2 (solid)
?Ba5OH(PO4)3 (solid) + 8H2O
Its molecular weight is 1728.3662 g/mol and the CAS
number of 12356-34-2. Barium readily forms mixed
hydroxyapatties with both calcium and strontium
hydroxyapatites. These hydroxyapatites can be OH deficient,
with the charge balance maintained by Ba2+, Sr2+
or Ca2+ vacancies. It has been found that Ba2+ ions are
more difficult to be incorporated into hydroxyapatite
crystals compared to Sr22+ions. In a mixture with
increasing Ba2+content, the particles grew and finally
turned into pure rod-shaped barium hydroxyapatite
particles with a size of ca. 0.2μ.
