chromic oxide

noun

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

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

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

It is this hydrated chromic oxide in the fibre that yields with the Hæmatein of the logwood your logwood black dye.

Analysis of samples showed an average of 34% of chromic oxide.

Dissolve chromic oxide in hydrochloric acid and evaporate to dryness; the residue is chromic chloride.

April 18, 2024petrichor

[pet-ri-kawr]

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