Sodii Boras. Sodium Borate. Na2B4O7 + 10H2O = 380.72. Synonyms. - Borax. Sodium Pyroborate.


Native, as a saline incrustation on the shores of certain lakes and as a crystalline deposit at the bottom of the Borax lake of California, or by boiling together Boric Acid and Sodium Carbonate and crystallization. 4H3Bo3+Na2Co3=Na2B4O7+Co2+6H2O.


Colorless, transparent, monoclinic prisms, or a white powder, having a sweetish alkaline taste. Solubility. - In 16 parts of water; in I of Glycerin.

Dose, 5 to 30 gr.; .30 to 2.00 gm.