Ключевые слова: alkali, bottle, caution, chemical, chemicals, chemistry, container, corrosion, corrosive, danger, destroy, factory, flammable, fuel, glass, glasses, glove, hazard, hazardous, health, hydroxide, industry, lab, label, laboratory, liquid, mask, material, naoh, poison, product, protection, risk, safe, safety, science, shoes, sodium hydroxide, solution, store, symbol, tag, warning, wear,