The orange and nankeen colors from fustic and fustet are changed to red by sulphurio acid; treated with potash they acquire a color resembling that of Catechu; they are discharged by nitric acid.

If there’s a chemical with a cooler name than “fuming nitric acid,” we can’t think of it. Nearly pure nitric acid is useful stuff, especially if you’re in the business of making rocket ...

FOR the analysis of the nitrate content of sea water, and for certain tests on alkaloids, it is necessary to have sulphuric acid free from all but the most minute amounts of nitric acid.