From a solution of chromate of potash and diacetate of lead, as chrome yellow.
The chloride of chromium is again precipitated with carbonate of lime, and by ignition converted into chromate of lime.
In standardising the chromate solution, the standard lead nitrate solution is used.
Both the chromate and the bichromate of potassium are extensively used in dyeing and calico-printing.
It occurs as chromate in crocoisite (PbCrO4), and some other rare minerals.
At Presque Isle, it assumes the form of a chromate of iron in connection with serpentine rock.
Another lead yellow, not a chromate, has likewise been called jaune minérale.
The serpentine rock appears, in nearly every locality examined, to be highly charged with particles of chromate of iron.
Solution of chromate of potassa converts it into brown flakes, whilst the salt loses its yellow colour.
On chromate of cadmium, made with bichromate of potash, thallium would naturally confer an orange hue.
chromate chro·mate (krō'māt')
A salt of chromic acid.