How to properly provide initial first aid for hydrogen fluoride eye burns

Emergency response measures: I. Emergency response to leaks – Evacuate people from the area affected by the leak to an area upwind, and isolate the area until the gas has dissipated. It is recommended that emergency responders use self-contained breathing apparatus and wear chemical protective clothing. Cut off the gas supply, neutralize it with ammonia water or other dilute alkaline liquids, and be sure to collect and treat the wastewater. Then exhaust (indoors) or provide strong ventilation (outdoors). If possible, use an exhaust fan to send the residual gas or leaking gas to a scrubber tower or a fume hood connected to the tower. A container with leaks cannot be used anymore and must undergo technical treatment to remove any remaining gas. Waste disposal method: It is recommended to neutralize the waste with an excess of lime water; the resulting precipitate should be landfilled or recycled, while the supernatant should be diluted before being discharged into the sewer system. Hydrogen fluoride should be recovered and reused. II. Protective Measures: Respiratory protection: When the concentration in the air exceeds the permissible level, it is necessary to wear a gas mask or an air-supplied helmet. It is recommended to wear a self-contained breathing apparatus during emergency rescue or evacuation. Eye protection: Wear chemical safety goggles. Protective clothing: Wear work clothes (made of corrosion-resistant material). Hand protection: Wear rubber gloves. Other: Take a shower and change after work. Store clothes contaminated with toxins separately, and use them after washing. Maintain good hygiene* habits. III. First aid measures: Skin contact: Remove contaminated clothing and rinse immediately with water for at least 15 minutes. Or rinse with a 2% sodium bicarbonate solution. If there is a burn, seek medical treatment. Eye contact: Immediately lift the eyelids and rinse with flowing water for 10 minutes, or rinse with a 2% sodium bicarbonate solution. Seek medical attention. Inhalation: Quickly move to a place with fresh air. Keep the airways clear. Nebulized inhalation of a 2-4% sodium bicarbonate solution is administered. When breathing stops, perform artificial respiration immediately. Seek medical attention. Ingestion: Milk or egg white is given to the patient while they are awake. Seek medical attention immediately.

Once the eyes come into contact with hydrogen fluoride, immediately pull back the eyelids and rinse the affected eyes with plenty of clean water for at least 15 minutes； If irritation persists after rinsing, rinse again and seek medical attention immediately. Solution: Wear proper chemical safety goggles and a wide green hard hat with a full-face shield to protect your eyes!

In fact, washing with water followed by treatment with 3% NAHCO3 causes significant damage to the cornea; we have had cases where tens of thousands were spent on such treatments!

First aid measures: Skin contact: Immediately rinse with flowing water for at least 10 minutes. Then rinse with a 2%-5% sodium bicarbonate solution. In the event of a burn, gently scrape off the skin with a small knife and then seek medical treatment. Eye contact: Rinse with flowing water for at least 10 minutes. Seek medical attention. Protection measures: Always wear a mask when operating