Barium phosphate
| Names | |
|---|---|
| IUPAC name
Barium phosphate
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.033.491 |
| EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Ba3(PO4)2 | |
| Molar mass | 601.9 g/mol |
| Appearance | Powder |
| Structure | |
| Rhombohedral | |
| Hazards | |
| GHS labelling:[1] | |
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| Warning | |
| H302, H332 | |
| P261, P264, P270, P271, P301+P317, P304+P340, P317, P330, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Barium phosphate (also known as barium orthophosphate) is an inorganic phosphate of barium with the molecular formula Ba3(PO4)2. It is usually found as a white, odorless powder which is insoluble in water.[1]
Preparation
The general chemical reaction for the synthesis of barium phosphate powder is:[2]
Ba(NO3)2 + 2NH4H2PO4 → Ba3(PO4)2 + 2NH4NO3 + 4HNO3
Structure
Its crystal structure is rhombohedral with a space group of R3m, the same as in strontium phosphate.[3]
Properties
Barium phosphate exhibits properties such as high refractive index, low melting point, low glass transition temperature, high transparency to ultraviolet light, and high thermal expansion coefficient.[4]
See also
References
- ^ "Barium Phosphate: Versatile Uses and Key Benefits". Eureka. Retrieved 11 March 2025.[unreliable source?]
- ^ "Ba3(PO4)2 Photocatalyst for Efficient Photocatalytic Application" (PDF). p. 9. Retrieved 23 April 2025.
- ^ Zachariasen, W. H. (2 November 1948). "The crystal structure of the normal orthophosphates of barium and strontium". Acta Crystallographica. 1 (5): 263–265. doi:10.1107/S0365110X48000697.
- ^ "Barium Phosphate Powder". Sigma Aldrich. Retrieved 12 March 2025.