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.
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||237.852 g/mol|
|Appearance||bluish white crystal|
|Lethal dose or concentration (LD, LC):|
LD50 (median dose)
|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).
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, additive for insect-resistant polystyrene, fertilizer, and production of boron glasses.
- 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.