Chemistry:Calcium borate

Short description: Bluish white crystal found in some minerals

Calcium borate

Names
IUPAC names Calcium borate
Identifiers
CAS Number	12007-56-6 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	118685 Y
PubChem CID	134660
UNII	80UKT9A6QU Y
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
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-]
Properties
Chemical formula	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)	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). 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 include 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.

Also it used as a main source of boron oxide in the manufacturing of ceramic frits that used in the ceramic glaze or ceramic engobe for wall and floor ceramic tiles.