Brass
A group of alloys consisting of copper and zinc. A typical yellow brass might contain about 67% copper and 33% zinc.
Braunite
Brown Mn2O3 containing some SiO2. Used as a source of manganese and as a colourizing agent for bricks and pottery.
Bromide (V) acid
(HBrO3), a colourless liquid made by the addition of dilute sulphuric acid to barium bromate. It dissociates extensively in aqueous solution and is a strong acid.


