In hydrofluoric acid exposure, what is the recommended initial action regarding decontamination?

• A. Evacuate to facility before decontamination
• B. Immediate copious water rinse; do not neutralize
• C. Apply a neutralizing agent on scene
• D. Brush off dry chemicals first

Answer: (B)

Immediate, copious water irrigation is the correct first step for hydrofluoric acid exposure. HF penetrates skin and tissues, so the priority is to wash away as much acid and fluoride ions as possible as quickly as possible to limit ongoing tissue damage and systemic effects. Neutralizing on scene is not advised because many neutralizing agents react with HF exothermically, can release harmful aerosols, and may leave fluoride behind that continues to cause injury; water alone dilutes and removes the hazard more reliably. Brushing off dry chemicals can spread contamination and delay proper decontamination. Evacuating before decontamination delays critical irrigation, increasing injury risk. After initial decontamination, seek medical care promptly, as treatment with calcium-based antidotes may be needed to bind fluoride ions and prevent complications.