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#flammable chemical #explosive substance #chemical barrel #volatile compound #combustion hazard #industrial chemical #dangerous goods

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#chemical explosive #compound explosive #c4 composition #semtex composition #explosive material #plastique chemistry #volatile compound

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#pyridine smell #fishy odor #chemical smell #laboratory smell #unpleasant odor #volatile compound

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#osmium tetroxide #OsO4 #toxic metal #pungent smell #volatile compound #microscopy stain