What shouldn't you mix bleach with?

Never mix bleach with ammonia, acid or alcohol. Mixing them will produce highly toxic gases, posing a serious and even fatal threat to health.
Bleach (whose main component is sodium hypochlorite) is a strong oxidizing agent. When it comes into contact with specific substances, it will undergo a rapid chemical reaction, releasing toxic gases.
The following are several types of substances that must never be mixed with bleach, along with their specific dangers:
Material category Common sources/examples Toxic substances produced Primary hazards
Ammonia (Ammonia) Glass cleaners, some floor cleaners, urine stains, etc. Chloramine gas (Chloramine) Inhaling can severely irritate the respiratory tract, causing severe coughing, chest tightness, nausea, and breathing difficulties
Acids (Acids) Vinegar, lemon juice, toilet cleaners, rust removers, some dishwasher detergents, etc. Chlorine gas (Chlorine Gas) Even at low concentrations, it can strongly irritate the eyes, nose, and throat, causing coughing and breathing problems; at high concentrations, it can be fatal. Chlorine gas was used as a chemical weapon in World War I
Alcohol (Alcohol) Medical alcohol, alcohol-based hand sanitizers, strong liquor, etc. Chloroform (Chloroform) Long-term or excessive inhalation can damage the nervous system, liver, and kidneys; it may also generate hydrochloric acid that is corrosive to the skin
In addition to these three major categories, bleach may also have unknown dangerous reactions with other substances (such as hydrogen peroxide, certain pesticides); therefore, "Do not mix bleach with any other cleaning products" is the safest principle.
?? Emergency handling for accidental mixture
If an accidental mixture is inhaled, please take the following steps immediately:
Evacuate immediately: Quickly leave the contaminated area and move to a place with fresh air and good ventilation.
Maintain ventilation: If possible, immediately open all doors and windows to accelerate the dispersion of toxic gases.
Emergency Assistance: If any discomfort symptoms occur (such as severe coughing, breathing difficulties, chest pain, or eye irritation), please immediately call the emergency number . Even if the symptoms are mild, you should contact the local poisoning control center  to seek professional guidance.
To ensure the safety of you and your family, the most reliable approach is to use only one type of cleaning product each time, and be sure to carefully read the warnings and instructions on the product label before use.