chromic : Idioms & Phrases
Chromic acid
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noun an unstable acid known only in solution and as chromate salts
WordNet
- an acid,
H2CrO4 , analogous to sulphuric acid, not readily obtained in the free state, but forming well known salts, many of which are colored pigments, as chrome yellow, chrome red, etc.
Webster 1913
Chromic anhydride
- a brilliant red crystalline substance,
CrO3 , regarded as the anhydride of chromic acid. It is one of the most powerful oxidizers known.