Bismuth Purple

: ON THE SECONDARY, PURPLE.

A purple powder is capable of being produced from bismuth by passing

chlorine gas through the hydrated oxide suspended in a saturated

solution of potash. As soon as the oxide becomes brown-red, the mixture

is boiled and the liquid decanted off at once, the residue being

immediately washed first with alcohol and then with water. On the whole,

the result is not, for an artistic pigment, worth the trouble involved

in the preparation.



More

;