Choose your country and language
Choose your country and language


  • CAS 1303-96-4
  • Molar weight 301.9693 g/mol
  • Chemical formula Na2B4O7. 5H2O

Borax is used in various household laundry and cleaning products and some tooth cleaning formulas. Some other ways in which it finds use is 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.

Available in:
  • Big bag
  • Bag
  • CAS 1303-96-4
  • Chemical formula Na2B4O7. 5H2O
  • Molar weight 301.9693 g/mol

Product details of Borax

  • White solid

Chemical formula

Na2B4O7. 5H2O

CAS number





Molar weight

301.9693 g/mol

Specific Gravity


Melting Point

743 °C

Boiling Point

1.575 °C


  • Agriculture
  • Disinfectants
  • Food additive
  • Metallurgy
  • Water softening agent
  • Welding

Just-in-time delivery

Full global handling

Only top market suppliers

Can’t find the product you’re looking for?

Let us help tailor the perfect solution for your needs. Get in touch with our industry experts to discuss what Brenntag can do for your business.