A New Bright and not Poisonous Green.

Manufacturer and Builder 9, 1872

It is announced that a green of nearly the same brilliant shade as Paris-green may be obtained by taking twenty parts of oxide of zinc and one of sulphate of cobalt, mixed into a paste with water, and exposed to a red heat.

If so, the invention is of considerable value, as the Paris-green is subject to the grave objection of being highly poisonous; and cases of fatal poisoning occur repeatedly by its use. Our readers well know that it is arsenite of copper, according to the detailed information given in our paper in regard to its manufacture. See our March Number for 1871 (page 63, Vol, III.)

Ei kommentteja :