The harm of formaldehyde
Formaldehyde is a highly toxic substance, and formaldehyde ranks second in the list of priority controls for toxic chemicals in China. Formaldehyde has been identified by the World Health Organization as a carcinogenic and teratogenic substance, a recognized source of allergies and one of the potential strong mutagens. Studies have shown that formaldehyde has a strong carcinogenic and cancer-promoting effects. The effects of formaldehyde on human health mainly include olfactory abnormalities, irritation, allergies, abnormal lung function, abnormal liver function and abnormal immune function. When the concentration reaches 0.06-0.07 mg/m3 per cubic meter of air, mild asthma occurs in children. When the formaldehyde content in the indoor air is 0.1mg/m3, there is odor and discomfort; when it reaches 0.5mg/m3, it can irritate the eyes and cause tearing; reaching 0.6mg/m3 can cause discomfort or pain in the throat. At higher concentrations, it can cause nausea and vomiting, cough and chest tightness, wheezing and even pulmonary edema; when it reaches 30mg/m3, it will immediately cause death.