Bleach and vinegar mixture causes poisonings

Mixing bleach and vinegar to remove weeds has led to 204 cases of poisoning in France between 2001 and 2022, according to reports. This reaction produces chlorine gas, which can severely damage the respiratory system and trigger asthma attacks.

Origins of bleach in 18th century France

Bleach was first developed in 1789 by French chemist Claude-Louis Berthollet, who aimed to create a faster way to whiten clothes. His invention used chlorine gas diluted in a solution to decolorize fabrics more efficiently than traditional methods.

Bleach's shift to public health

A few decades after its creation, pharmacist Antoine-Germain Labarraque discovered that the solution had disinfectant properties. His formula, based on sodium hypochlorite, was used in hospitals and morgues, marking bleach’s transition from a laundry product to a tool for public hygiene.

Bleach's modern use and risks

Despite its long history, bleach remains hazardous if mishandled. A study found 5,452 cases of exposure in one year, with most incidents resulting from household accidents. The most dangerous misuse involves mixing bleach with acidic substances like vinegar, which releases toxic chlorine gas.

Seasonal pattern in poisonings

The poisonings linked to chlorine gas from bleach and vinegar mixtures tend to peak in late spring and early summer. This seasonal trend coincides with the time of year when people are more likely to deal with weeds in their gardens and on sidewalks.