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A corrosive and strongly oxidizing acid existing only in solutions of chromium trioxide.
- ‘The paint spray workshop also contained two acetylene cylinders, two oxygen cylinders and two propane bottles as well as chromic acid and acetone.’
- ‘Environments to be avoided include nitric acid; some metallic salts, such as ferric chloride and chromic acid; moist chlorinated hydrocarbons; and moist HN 3.’
- ‘After cleaning, the parts are etched or pickled in a chromic acid / nitric acid solution to remove any oxide layer or other chemical coatings not fully removed by alkaline cleaning.’
- ‘A wide variety of electrolytes are used to produce the desired surface properties: chromic acid, sulfuric acid, and oxalic acid are the most common but borates, citrates and oxoacids are also sometimes used.’
- ‘The most regularly employed oxidizing agent for this set of reactions is a mixture called chromic acid, a mixture of sodium or potassium dichromate and sulfuric acid.’
We take a look at several popular, though confusing, punctuation marks.
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The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.