Chemicals

Top

General Information

Borax

Borax is a sodium salt from boric acid.[1]

Top

Chemical & Physical Information

Trivial nameBorax
Chemical nameSodium tetraborate, decahydrate
Other namesNatriumtetraboraat (NL,BE)
Type of chemicalIonic compound (salt)
Chemical formulaNa2B4O7, 10H2O
CAS number1330-43-4 (anhydrous)
1303-96-4 (decahydrate)
Density1.73 g·cm-3
Molar mass381.37 g·mol-1
Melting point741 °C
Boiling point1575 °C
SolubleNot in alcohol and ether
Solubility (water, 20 °C)27 g·L-1 Borax solubility graph. (anhydrous)
Crystal systemMonoclinic
AppearanceWhite crystalline solid
ColourWhite
Safety summaryHarmful
Safety dataMSDS (decahydrate)
StorageDry
Extra-
Top

Photos

Borax

(3 cm)

Top

Sources

[1] Wikipedia

[2] Specimen from my personal collection, photo taken by me.

[3] Mullin J.W. - Crystallization, 2001