Formaldehyde harm to human body
Relevant data show that indoor air pollution is 5-10 times higher than outdoor air pollution, and there are more than 500 kinds of pollutants. Indoor air pollution has become the inducement of many diseases, and formaldehyde is one of the main aspects of indoor air pollution.
Formaldehyde is harmful to health in the following aspects:
A. stimulating effect: the main harm of formaldehyde is the stimulating effect on skin and mucous membrane. Formaldehyde is a kind of protoplasm toxic substance, which can combine with protein and cause serious respiratory tract stimulation and edema, eye irritation and headache when inhaled in high concentration.
B. sensitization: direct contact of skin with formaldehyde may cause allergic dermatitis, pigmentation and necrosis. Inhalation of high concentration formaldehyde may induce bronchial asthma.
C. mutagenicity: high concentration formaldehyde is also a genotoxic substance. Experimental animals can cause nasopharyngeal tumor when inhaled with high concentration in the laboratory.
D. outstanding performance: headache, dizziness, fatigue, nausea, vomiting, chest distress, eye pain, throat pain, poor appetite, palpitation, insomnia, weight loss, memory loss and autonomic nervous disorders. Long term inhalation of pregnant women may lead to fetal malformation or even death; long term inhalation of men may lead to sperm malformation and death.
Its vapor and air form explosive mixture, which can cause combustion and explosion in case of open fire and high heat. In case of high heat, the internal pressure of the vessel increases, and there is a risk of cracking and explosion.
Combustion (decomposition) products: carbon monoxide, carbon dioxide.
Relative concentration risk
When formaldehyde concentration reaches 0.06-0.07mg/m3, children will have slight asthma;
When formaldehyde in indoor air reaches 0.1mg/m3, there will be peculiar smell and discomfort;
When formaldehyde reaches 0.5mg/m3, it can stimulate eyes and cause tears;
Formaldehyde reaches 0.6mg/m3, which can cause discomfort or pain in the throat. When the concentration is higher, it can cause nausea and vomiting, cough and chest tightness, asthma and even pulmonary edema;
When formaldehyde reaches 30mg / m3, it will immediately cause death.