1. It can be blanched with dilute KMnO4 or picric acid solution. Apply yellow picric acid solution, scald ointment, or kaleidum to the wound.

        2. When a fire occurs on the experimental bench, it should be covered with alcohol, benzene or wet cloth, asbestos cloth or sand. When the fire is large,Experimental benchFoam fire extinguishers may be used. In the event of a fire caused by electrical equipment, cut off the power supply first and use a carbon dioxide fire extinguisher, dry powder fire extinguisher or carbon tetrachloride fire extinguisher to extinguish the fire on the experimental bench. Do not use foam fire extinguishers to avoid electric shock. If there is a big fire, call the police.

        3. If acid-base corrosion splashes on the eyes or skin, wash with saturated sodium bicarbonate (or dilute ammonia) or boric acid solution, and then rinse with plenty of water.

        4. If you inhale poisonous gases such as chlorine, hydrogen chloride and other gases, the experimental bench should inhale a small amount of alcohol and mixed steam to detoxify; if you inhale hydrogen sulfide, when the experimental bench feels uncomfortable or dizzy, fresh air should be exhaled to the outside.

        5. If the poison is not swallowed, you should spit it out and rinse your mouth with water; you should try to vomit when swallowing, and take detoxification measures according to the nature of the poisoning.

       6. First cut off the foreign matter in the wound, and then apply red or mixed powder on the wound with gauze.

       7. In case of electric shock, the power supply to the experimental bench should be cut off first.

       8. If the injury is serious, seek medical attention.