| IUPAC name
Sodium tetraborate decahydrate
| Systematic IUPAC name
| Other names
| Na2B4O7 (anhydrous)|
|Molar mass|| 381.38 g/mol (decahydrate)|
201.22 g/mol (anhydrate)
|Melting point||743 °C (1,369 °F; 1,016 K) (anhydrate)|
|Boiling point||1,575 °C (2,867 °F; 1,848 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Borax or sodium borate, sodium tetraborate, is an important boron compound. It has the chemical formula Na2B4O7.
Sodium borate will react with a strong acid to release boric acid.
Borax is a white crystalline solid. It melts at 743 °C and boils at 1,575 °C. It has a density of 1.73 g/cm3.
Borax is sold by various chemical suppliers.
It is also sold in various pharmacies and iron forgeries.
Sodium borate can be made by reacting boric acid with a sodium compound.
- Make boric acid
- Grow borax crystals,borax snowflakes
Borax has low toxicity.
Borax was added to the Substance of Very High Concern (SVHC) candidate list on 16 December 2010 in the EU.
Borax should be stored in closed bottles
Sodium tetraborate can be dumped in trash.