Calcium borate
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| IUPAC names
Calcium borate
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3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Ca3(BO3)2 | |
| Molar mass | 237.852 g/mol |
| Appearance | bluish white crystal |
| Hazards | |
| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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590 mg/kg (oral, mouse) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium borate is a borate salt of calcium with the molecular formula Ca3(BO3)2. It can be prepared by reacting calcium metal with boric acid. The resulting precipitate is calcium borate. A hydrated form occurs naturally as the minerals colemanite[1], nobleite[2] and priceite[3].
Use
[edit | edit source]Calcium borate is used as a binder in some grades of hexagonal boron nitride for hot pressing.
Other uses include as a flame retardant in epoxy molding compounds, a ceramic flux in some ceramic glazes, reactive self-sealing binders in hazardous waste management,[4] additive for insect-resistant polystyrene,[5] fertilizer, and in the production of boron glasses.
It is used as a main source of boron oxide in the manufacturing of ceramic frits used in ceramic glaze or ceramic engobe for wall and floor ceramic tiles.[citation needed]
References
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- ^ Calcium borate binders. (PDF) . Retrieved on 2010-02-08.
- ^ Calcium borate infused foam building materials and the like and method of making same - US Patent 6667350 Claims Archived 2011-06-12 at the Wayback Machine. Patentstorm.us. Retrieved on 2010-02-08.
