When the formaldehyde content reaches 0.06-0.07mg/m³ per cubic meter of air, children can experience mild asthma;

When the concentration of formaldehyde in indoor air reaches 0.1mg/m³, it has a strong smell and discomfort; when formaldehyde reaches 0.5mg/m³, it can irritate the eyes, causing tears; when formaldehyde reaches 0.6mg/m³, it can cause discomfort or pain in the throat. At higher concentrations, it can cause nausea, dry heaves, cough, chest tightness, shortness of breath, and even pulmonary edema; when formaldehyde reaches 30Mg/m³, it can immediately cause death.

Extended Material:

Indoor formaldehyde, chemical formula HCHO or CH₂O, relative molecular mass 30.03, also known as formalin. It is colorless and has a stimulating effect on the eyes, nose, and other parts of the human body. Gas density 1.067 (gas = 1), liquid density 0.815g/cm³ (-20℃).

Through the circulation of products for indoor air quality, the components of harmful substances in indoor air quality can be reduced, thereby reducing the harm of such substances to the body. In winter, we often keep the doors and windows closed, and the indoor and outdoor air cannot circulate, which not only causes the concentration of formaldehyde in indoor air to increase, but also leads to the continuous accumulation of harmful gases, even reaching very high concentrations.

Indoor formaldehyde has obvious carcinogenic and promoting effects. Many references describe the impact of indoor formaldehyde on health, which is manifested in abnormal sense of smell, irritation, allergies, abnormal pulmonary function, abnormal liver function, and abnormal immune function. When its concentration reaches 0.06-0.07 mg/m3 per cubic meter of air, children can experience mild asthma. When the concentration of formaldehyde in indoor air reaches 0.1 mg/m3, it can cause a strong smell and discomfort; when it reaches 0.5 mg/m3, it can irritate the eyes, causing tears; when it reaches 0.6 mg/m3, it can cause discomfort or pain in the throat.

At higher concentrations, it can cause nausea, dry heaves, cough, chest tightness, shortness of breath, and even pulmonary edema; reaching 30 mg/m3 can immediately cause death. Long-term exposure to low doses of indoor formaldehyde can lead to chronic respiratory system diseases, causing nasopharyngeal cancer, colon cancer, brain tumors, menstrual disorders, genetic variation in cell quality, DNA peptide chain cross-linking and DNA-protein cross-linking, as well as repair of DNA damage inhibition, pregnancy syndrome, causing chromosomal abnormalities in newborns, sepsis, and reducing the memory and IQ of adolescents and children. Among all exposed individuals, children and pregnant women are particularly sensitive to indoor formaldehyde, and the damage is greater. It is a key air pollutant in indoor decoration and furniture. Its release time can last from 3 to 15 years, and it will evaporate from the deep level of the material when heated or humidified, causing serious environmental pollution.