EMS 1.12.2

EV Hazards: Toxic Gases

When EV batteries catch fire, they can release harmful gases and substances,
including hydrogen fluoride (HF). HF is highly toxic and can cause serious health problems
even in small amounts. It irritates the skin, eyes, and lungs, and can cause severe burns.
HF can also corrode metal, glass, and protective equipment, making cleanup more difficult.
How to protect yourself from toxic fumes:
• Ensure good ventilation in areas where HF gas might collect.
• Wear specialized protective gear, including respirators designed
for chemical exposure.
• Keep people and equipment away from the affected area until the gas
has been neutralized.