chromic oxide

noun

1. a bright-green crystalline powder, Cr 2 O 3 , insoluble in water: used in metallurgy and as the pigment chrome green.

Example Sentences

It is not due to the presence of chromic acid, but to a reaction between alumina and chromic oxide, which requires an elevated temperature.

From Project Gutenberg

Much of the material mined as ore does not contain more than 40 to 50% of chromic oxide.

From Project Gutenberg

Thus Sainte Claire Deville prepared it as a very hard substance of steel-grey colour, capable of taking a high polish, by strong ignition of chromic oxide and sugar charcoal in a lime crucible.

From Project Gutenberg

He inferred that chromic acid must contain only three atoms of oxygen, as did sulphuric acid SO3; consequently chromic oxide, which contains half the amount of oxygen, must be Cr2O3, and hence ferric oxide must be Fe2O3.

From Project Gutenberg

In the higher commercial grades of chrome ore the percentage of chromic oxide is 45 to 55 per cent, but under war conditions ore as low as 30 per cent in Cr2O3 was mined.

From Project Gutenberg