Excessive formaldehyde will not only cause respiratory diseases, but also cause rhinitis cancer and colon cancer in severe cases. It is recognized as a carcinogenic and teratogenic substance, which can cause fetal malformations, induce leukemia in newborns and infants, and cause adolescents to reduce their memory and intelligence. Major diseases. 

The health hazards of formaldehyde mainly include the following aspects:

1.Irritation: The main hazard of formaldehyde is the irritation to the skin and mucous membranes. Formaldehyde is a protoplasmic toxic substance that can be combined with protein and will cause severe respiratory irritation when inhaled in high concentrations. And edema, eye irritation, headache. 

2.Sensitization: direct skin contact with formaldehyde can cause allergic dermatitis, stains, and necrosis. Inhalation of high concentrations of formaldehyde can induce bronchial asthma. 

3. Mutagenicity: High-concentration formaldehyde is also a genotoxic substance. Experimental animals can cause nasopharyngeal tumors when inhaled at high concentrations in the laboratory. 4. Outstanding manifestations: headache, dizziness, fatigue, nausea, vomiting, chest tightness, eye pain, sore throat, poor appetite, palpitations, insomnia, weight loss, memory loss, and autonomic disorders; long-term inhalation of pregnant women may cause fetal malformations. Even death, long-term inhalation of men can lead to male sperm deformity and death.

Relative concentration risk: 

When the formaldehyde concentration reaches 0.06-0.07mg/m³ per cubic meter of air, children will have mild asthma; 

when the indoor air formaldehyde reaches 0.1mg/m³, there will be peculiar smell and discomfort; when the indoor air formaldehyde reaches At 0.5mg/m³, it can irritate the eyes and cause tearing; 

when formaldehyde reaches 0.6mg/m³, it can cause throat discomfort or pain. 

At higher concentrations, it can cause nausea and vomiting, coughing, chest tightness, wheezing and even pulmonary edema; when formaldehyde reaches 30mg/m³, it will immediately cause death. Using the formaldehyde detector can help you detect the environment air quality and take action to improve it.