sublimes at 2550 C, metalloid, semiconductor, black solid, compounds toxic upon accumulation
-- part contents for background part 16
----- text -----
(Ar. Buraq, Pers. Burah) Known to ancients, discovered by Davy, Thenard and Gay-Lussac in 1808. Not found free in nature, found as borax and colemanite in volcanic spring waters, as well as other rock forms. Large commercial yield of borates come from salt brines in California.
-- part contents for background part 24
----- text -----
boron filaments used in fiber optics research, borates used to make glazes, enamels and borosilicate glass, boric acid is an antiseptic,lightweight compounds used for aerospace structures.