Calcium borate

Calcium borate
12007-56-6 N
3D model (Jmol) Interactive image
Interactive image
ChemSpider 118685 YesY
ECHA InfoCard 100.031.361
PubChem 134660
Molar mass 237.852 g/mol
Appearance bluish white crystal
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
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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Infobox references

Calcium borate (Ca3(BO3)2), also called Gerstley borate, 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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