Borax is used in various household laundry and cleaning products and some tooth cleaning formulas. It is also used as a component of glass and pottery glazes in the ceramics industry, as a solvent for metal-oxide slags in metallurgy, as a flux in welding and soldering, and as a fertiliser additive, a mouthwash, and a water softener.
|Molar Weight||381.38 g/mol (decahydrate)|
|Melting Point||75°C (decahydrate), 742°C (anhydrous)|
|Boiling Point||1575°C (anhydrous, decomposes)|
|Specific Gravity||1.72 g/cm³ (decahydrate), 1.815 g/cm³ (pentahydrate)|
Synonyms: Sodium Borate, Sodium tetraborate, Disodium tetraborate, E285
Chemical Formula: Na2B4O7.xH2O
CAS Number: 1330-43-4 (anhydrous), 1303-96-4 (decahydrate), 12179-04-3 (pentahydrate)