Hydrogen fluoride

ACCIDENTAL RELEASE MEASURES; Personal precautions, protective equipment and emergency procedures: Wear respiratory protection. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Methods and materials for containment and cleaning up: Soak up with inert absorbent material and dispose of as hazardous waste. Keep in suitable, closed containers for disposal.

1. Ventilate area of spill or leak to disperse gas. 2. If in gaseous form, stop flow of gas. If source of leak is cylinder & leak cannot be stopped ... remove ... to safe place in open air, & repair leak or allow cylinder to empty. 3. If in liq form, allow to vaporize & disperse the gas.