| Borax (borax) |
|---|
| n. | ((?)) |
|---|
| Bo"rax |
| [OE. boras, fr. F.
borax, earlier spelt borras; cf. LL. borax, Sp.
borraj; all fr. Ar. b(?)rag, fr. Pers. b(?)rah.] |
A white or gray crystalline salt, with a slight alkaline taste, used
as a flux, in soldering metals, making enamels, fixing colors 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.
|
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In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 