A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colours on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O. Borax bead.

<chemistry> See Bead.

Origin: OE. Boras, fr. F. Borax, earlier spelt borras; cf. LL. Borax, Sp. Borraj; all fr. Ar. Brag, fr. Pers. Brah.

(01 Mar 1998)

boragineous, boranes, borate, borated, borates < Prev | Next > borborygm, borborygmi, borborygmus

Bookmark with: icon icon icon icon iconword visualiser Go and visit our forums Community Forums