Quickly evacuate personnel from the contaminated area to a safe area, and conduct isolation to strictly restrict access. Cut off the fire. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and wear acid and alkali protective overalls. Do not touch the spill directly. Cut off the source of the leak as much as possible. Prevent entry into restricted spaces such as sewers and flood drains.
Small amount of leakage: Adsorption or absorption with sand or other non-combustible materials. It is also possible to sprinkle the floor with soda ash, then rinse it with plenty of water, dilute the wash water and put it into the waste water system.
A large number of leaks: building dikes or digging pits. Cover with foam to reduce steam hazards. Spray water to cool and dilute the steam. Transfer to a tank truck or special collector with a pump, recycle or transport to a waste disposal site for disposal.