Calcium borate

Calcium borate
	Identifiers
CAS number	12007-56-6 N
PubChem	134660
ChemSpider	118685 Y
Jmol-3D images	{{#if:[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-][Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-]|Image 1 Image 2
SMILES [Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-] [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-]
InChI InChI=1S/2BO3.3Ca/c2*2-1(3)4;;;/q2*-3;3*+2 Y Key: VLCLHFYFMCKBRP-UHFFFAOYSA-N Y InChI=1/4BO3.6Ca/c4*2-1(3)4;;;;;;/q4*-3;6*+2 Key: KKKYJLNWARAYSD-UHFFFAOYAA InChI=1/2BO3.3Ca/c2*2-1(3)4;;;/q2*-3;3*+2 Key: VLCLHFYFMCKBRP-UHFFFAOYAG
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)
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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.

References