Calcium borate

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Calcium borate
Identifiers
CAS number 12007-56-6 N
PubChem 134660
ChemSpider 118685 YesY
Jmol-3D images Image 1
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Properties
Molecular formula Ca3(BO3)2
Molar mass 237.852 g/mol
Appearance bluish white crystal
Hazards
Flash point Non-flammable
LD50 590 mg/kg (oral, mouse)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Calcium borate (Ca3(BO3)2), also called Gerstley borate[citation needed], is a bluish white crystal with a very defined structure. 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, nobleite and priceite.

One of its uses is as a binder in some grades of hexagonal boron nitride for hot pressing. Other uses are e.g. flame retardant in epoxy molding compounds, a ceramic flux in some ceramic glazes, reactive self-sealing binders in hazardous waste management,[1] additive for insect-resistant polystyrene,[2] fertilizer, and production of boron glasses.

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