KOH Electrolyte Spill Cleanup and Safety Procedures

KOH Hazard Profile

Potassium hydroxide (KOH) in HHO electrolyte concentrations (5–30% by weight in water) has a pH of 13–14. Direct skin contact causes chemical burns; eye contact is a medical emergency. NaOH (baking soda's more dangerous cousin, also used as electrolyte) has similar hazard profiles. Always wear chemical-resistant gloves and safety glasses when handling, mixing, or servicing electrolyte.

Skin Contact

Immediate response: flush with large amounts of running water for minimum 15 minutes. Do not attempt to neutralize with vinegar or acids on skin — the exothermic neutralization reaction can cause additional burns. After flushing, if irritation persists or burns are visible, seek medical attention. KOH burns continue to penetrate tissue after contact ends, making thorough water flushing critical.

Eye Contact

Immediate response: flood eyes with water for minimum 20 minutes. This is a medical emergency — call emergency services while flushing. KOH eye contact can cause permanent vision damage within minutes if not immediately and thoroughly flushed. Remove contact lenses immediately if worn.

Spill Cleanup on Vehicle or Workbench

Neutralize with dilute vinegar (5% acetic acid) or a baking soda solution applied with rags. The fizzing indicates neutralization reaction. Rinse with water and dry. KOH is corrosive to aluminum — check any aluminum components (intake piping, cylinder heads) that received electrolyte contact and clean thoroughly.