Can you mix bleach with vinegar or ammonia?
No — household chlorine bleach (sodium hypochlorite) should never be mixed with vinegar or with ammonia-based cleaners. Both combinations release a toxic gas, and both are common accidental mixes because the products are often stored under the same sink.
What happens if you mix bleach and vinegar?
Bleach is an alkaline solution; vinegar is an acid. Mixing them releases chlorine gas, which irritates the eyes, nose and lungs even in small amounts and can cause serious respiratory damage at higher concentrations in a closed bathroom or kitchen.
This mix happens by accident most often when someone tries to boost a bleach cleaner with vinegar for extra cleaning power, or uses both products back-to-back on the same surface without rinsing in between.
What happens if you mix bleach and ammonia?
Bleach and ammonia (found in many glass cleaners and some all-purpose cleaners) react to form chloramine vapors, which are also respiratory irritants and, at higher concentrations, can cause chemical pneumonia-like symptoms.
Urine also contains ammonia compounds, which is why cleaning a pet-soiled area with bleach right after an ammonia-based cleaner — or without ventilating the room — carries the same risk.
What should you do if you accidentally mix them?
Leave the area immediately, open windows and doors for ventilation, and do not go back in until the smell is completely gone. If anyone has breathing difficulty, eye irritation that does not clear, or persistent coughing, call Poison Control or seek medical attention.
As a rule, never mix two cleaning products unless the label explicitly says it is safe — and never use bleach in the same cleaning session as any other cleaner without rinsing the surface with plain water in between.
Before you rely on this guide
Como ler este número
The danger is the gas, not a stain or residue
De onde vem o dado
OSHA / chemical safety data sheets
Cuidado
This is a safety warning, not a cleaning tip
O que fazer com isso
In an emergency
Glossário: os termos desta página
GHS pictogram
A GHS (Globally Harmonized System) pictogram is one of nine standardized diamond symbols — flame, skull, corrosion and others — that label a chemical's hazards the same way worldwide, so a warning reads the same regardless of language.
Fonte: Hazard Communication Standard, 29 CFR 1910.1200 — OSHA.
Safety Data Sheet (SDS)
A Safety Data Sheet is the standardized 16-section document a chemical manufacturer must provide, listing hazards, first aid, storage and handling. It is the document to check before mixing or storing any household chemical.
GTIN
A Global Trade Item Number (GTIN) is the number encoded in a product's barcode. A 12-digit UPC and a 13-digit EAN are both GTIN formats; the number identifies the product and its manufacturer, not an individual unit.
Fonte: GTIN standard — GS1.
Energy and consumer glossary — todos os 9 termos.
Sources: Hazard Communication Standard, 29 CFR 1910.1200 (OSHA).