chromic oxide

American  

noun

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

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Example Sentences

Chrome iron ore, however, and ignited chromic oxide are insoluble; and the former presents considerable difficulty on attempting to open up by the usual methods.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

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

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

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 The Economic Aspect of Geology by Leith, C. K. (Charles Kenneth)

The substance is chromic oxide, Cr2O3, and contains 68.62 per cent. of chromium.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

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 Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various