Borax

Borax finds application in a variety of household laundry and cleaning products, as well as certain tooth cleaning formulations. It is also employed as an ingredient in glass and pottery glazes within the ceramics industry. In metallurgy, it serves as a solvent for metal-oxide slags, while in welding and soldering, it acts as a flux. Additionally, borax is utilized as an additive in fertilizers, a component in mouthwash solutions, and a water softener.

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)

Characteristics

Molar Weight
381.38 g/mol (decahydrate)
Melting Point
75°C (decahydrate), 742°C (anhydrous)
Boiling Point
1575°C (anhydrous, decomposes)
Density
1.72 g/cm³ (decahydrate), 1.815 g/cm³ (pentahydrate)
Forms
Powder, White, Solid

Uses and Applications

Key applications

  • Buffer agent
  • Disinfectant
  • Welding
  • Food additive
  • Agricultural
  • Pharmaceuticals
  • Personal care

Industries

  • Pharma
  • Cleaning
  • Beauty & Personal Care
  • Water Treatment
  • Food & Nutrition
  • Agriculture