Acid burn (acidburn) is a burn damage caused by a high concentration of strong acid acting locally on tissues in the body, causing tissue dehydration and protein denaturation. Acid burns are characterized by cell dehydration and protein coagulation denaturation caused by acidic chemicals in contact with the skin, and are accompanied by thermal burns. Be aware of exposure to strong acidic substances in your life. If you are in industrial production, the safety of facilities and equipment should be qualified, and operators should operate according to regulations, etc. Preventive measures: 1, the most important thing is to protect the eyes, in the chemical laboratory should always wear goggles (flat glass or plexiglass glasses) to prevent the eyes from irritating gas fumigation, to prevent strong acid foreign body into the eye. 2, prohibit direct access to strong acidic substances by hand, immediately after the experiment to clean the instruments and utensils, and immediately wash your hands. 3, prohibit the mouth suction pipette to remove concentrated acid liquid, should be used to wash the ear ball to absorb. Prohibit the risk of tasting drugs and reagents, do not use your nose to directly smell the gas, but use your hand to fan a small amount of gas into the nostrils. 4, do not use strong acid organic solvents to scrub the drugs splashed on the skin, this practice instead increases the speed of absorption of drugs by the skin. 5.Smoking and eating are prohibited in the laboratory, and wearing slippers with bare shoulders is prohibited. 6, skin stained with concentrated acidic liquid immediately after repeated rinsing with a large amount of water, at least 20 minutes.