from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, relating to, or containing chromium, especially with valence 2.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. of, relating to, or containing chromium, especially in oxidation state 2
from the GNU version of the Collaborative International Dictionary of English
- adj. Of, pertaining to, or derived from, chromium, when this element has a valence lower than that in chromic compounds.
from The Century Dictionary and Cyclopedia
- Pertaining to, of the nature of, or containing chromium.
Sorry, no etymologies found.
He was soon to leave biology for the field of inorganic chemistry, where his early work was on the oxides of iron-group metals and chromium and a study of the chromous salts.
-- The author makes use of a solution of chromous chloride, which he prepares as follows:
When the current of gas has been passed in for some time, the hydrochloric acid is let enter, which dissolves the chromous acetate, and thus, in the absence of air, produces a solution of blue chromous chloride.
The solution of chromous chloride must therefore be freed from the zinc by filtration in the absence of air.
A red precipitate of chromous acetate is formed, which is washed by decantation in water containing carbonic acid.
It is advisable to use an excess of chromous acetate or an insufficient quantity of hydrochloric acid, so that there may be no free hydrochloric acid in the liquid.
It is filled with dilute hydrochloric acid, and after the expulsion of the air by a current of gas, plentiful quantities of chromous acetate are passed into the bottles.
As but little chromous salt is decomposed by the oxygen such a washing apparatus may serve for many experiments.
The blue chromous chloride solution thus obtained is poured into a saturated solution of sodium acetate in an atmosphere of carbonic acid.
In this manner a chromous acetate is obtained perfectly free from zinc.