Word: nitric
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...Unaffected by 70% nitric, full-strength hydrochloric acids, or by most other acids and alkalis, Vinyon aims to oust cotton and wool from important industrial filter uses...
Shrunk glass is made by mixing two borosilicate formulas, one of which is soluble in acid, the other not. The mixture is melted and the glass is molded or blown to the desired shape. Then it is soaked in dilute nitric acid, which eats away the soluble ingredients, leaving the glass honeycombed with air spaces. Again heat is applied and the glass becomes solid, shrinking 35% in volume...
...Coventry, a concert hall was destroyed and several stores were damaged by fire. Police discovered that toy balloons filled with nitric acid and placed in envelopes containing magnesium flash powder were being slipped under goods counters of the stores just before closing time. When the acid ate through the balloon, the magnesium would ignite and set the store on fire...
Raising one of their steel rams, the besiegers began to batter at a nailed-shut door. Down on them rained a shower of bolts, nuts, pulleys, bottles filled with nitric acid. Behind a barrage of tear gas, the officers joined battle. Strikers turned on the plant's ventilating system, cleared out the gas almost as fast as it came in. One excited deputy was burned with his own gas bomb. Acid containers hit two policemen, splashed them painfully. One striker quit the plant badly gassed. After two hours the officers ran out of tear gas and Sheriff Doolittle...
...Paraffin is poured on the subject's hands, peeled off when cool, tested with a hypersensitive nitric reagent. If nitrate (as from gunpowder) is present, purplish pinpoints will appear in the paraffin. The test is highly inconclusive...