At Winston Industrial Maintenance, we believe in powerful cleaning — but also safe cleaning. And one of the most important things every cleaner, business owner, and janitorial team should know is this:
Not all cleaning chemicals are safe to mix.
In fact, some combinations can create dangerous — even deadly — gases.
Here are the top 3 chemical combos you should NEVER mix, no matter how tough the mess:
1. Bleach + Ammonia = Chloramine Vapors
This one’s a classic (and very dangerous) mistake. When these two chemicals combine, they release chloramine gases, which can cause:
- Chest pain
- Coughing
- Nausea
- Eye irritation
- Severe lung damage
Even small amounts can be harmful in poorly ventilated areas like bathrooms and maintenance closets.
2. Bleach + Acids (Vinegar, Toilet Bowl Cleaners, etc.) = Chlorine Gas
Mixing bleach with acidic products like vinegar, drain cleaner, or toilet bowl cleaner releases chlorine gas — a toxic chemical warfare agent used in WWI.
Exposure can lead to:
- Breathing issues
- Burning throat and eyes
- Long-term lung damage
This combo is especially risky in enclosed spaces where gas buildup can occur fast.
3. Hydrogen Peroxide + Vinegar = Peracetic Acid
You might think you’re creating a super cleaner when mixing these — but what you’re actually making is peracetic acid, a highly corrosive and irritating substance that can:
- Burn your skin and eyes
- Damage surfaces and equipment
- Create harmful vapors when inhaled
Use these products separately and never in the same container or sequence.
How to Stay Safe
✅ Always read labels. They often warn about incompatible substances.
✅ Don’t assume more is better. Doubling up can lead to chemical reactions — not better cleaning.
✅ Use proper PPE (gloves, goggles, ventilation) when handling strong cleaners.
✅ Ask an expert. When in doubt, call us at 919-693-9930 — we’re happy to help.
Final Word
We’re here to keep your operation clean — and more importantly — safe. Whether you’re a facility manager, contractor, or small business owner, knowing what not to mix is as important as knowing what works.
Got questions about chemical safety? Reach out to the Winston Industrial team or browse our lineup of reliable, powerful products at winstonindustrial.com.
