Does hydrogen peroxide and vinegar make peracetic acid?

Why You Should Never Mix Hydrogen Peroxide and Vinegar

It might seem like a smart cleaning hack—combining two common household disinfectants, hydrogen peroxide and vinegar, for a super-powered clean. But here’s the catch: don’t mix them together. When combined, hydrogen peroxide and vinegar react to form peracetic acid, a corrosive chemical that can be harmful, especially in poorly ventilated spaces.

Peracetic acid is a strong oxidizer used in industrial settings for sterilization, but it’s not something you want floating around your kitchen or bathroom. Even in small concentrations, it can irritate your eyes, skin, and respiratory system. Symptoms can range from mild discomfort to more serious reactions, particularly for people with asthma or sensitive lungs.

The good news? You can still use both cleaners in the same cleaning session—just not at the same time. Alternate them instead. Spray one on the surface, let it sit for a few minutes, wipe it off, then follow with the other. This way, you avoid the chemical reaction while still benefiting from the disinfecting power of both solutions.

Vinegar is excellent at cutting through grease and killing some bacteria and mold, while hydrogen peroxide shines at destroying germs like E. coli and salmonella. Used separately and safely, they’re both effective, eco-friendly options.

Bottom line: keep the bottle of vinegar and the hydrogen peroxide separate when cleaning. A little caution goes a long way in keeping your home clean—and safe. Your lungs will thank you.