Appearance: Colorless and transparent liquid, with a pungent odor, easily volatile, miscible with water, ethanol, ether, etc

Safety measures: Flammable and highly corrosive, stored in a cool, ventilated warehouse, away from fire and heat sources, and stored separately from oxidants, alkalis, etc; Operators must wear acid resistant protective equipment to avoid skin contact and inhalation of vapors

Extinguishing: use insoluble foam, dry powder, carbon dioxide and sand to extinguish the fire, and use water to cool the container