Formaldehyde concentration that pregnant women can withstand

Indoor formaldehyde has long been identified by the World Health Organization as a carcinogen and teratogen. It is a recognized allergen and one of the potential strong mutators. Pregnant women who are exposed to small doses of indoor formaldehyde for a long time can develop chronic respiratory diseases, nasopharyngeal cancer, colon cancer, brain tumors, menstrual disorders, and cytoplasmic genetic mutations. So, how much formaldehyde content can pregnant women bear?

The national industry standard is that the formaldehyde content should be less than 0.1mg/cubic meter when windows and doors are closed for more than 12 hours. For pregnant women, due to increased oxygen consumption, it is recommended to stay in a room below 0.05mg/cubic meter for safety.

Indoor formaldehyde is a colorless, insoluble, irritating gas. Composite boards such as plywood, high-density boards, artificial boards, adhesives and wallpapers are the main sources of indoor formaldehyde in the air. Indoor formaldehyde is obviously irritating. When the concentration is low, it can make people's eyes feel spicy, tearful, and swollen; when the concentration is slightly higher, people will feel choked, nauseous, have difficulty breathing, and even asphyxiation. The release time of indoor formaldehyde is as long as 3 to 15 years and can be absorbed into the body through the respiratory system. The key harms of indoor formaldehyde to pregnant women are:

1. Indoor formaldehyde has adverse effects on the hematopoietic system of pregnant women, which may cause anemia, infection, subcutaneous hemorrhage, etc. Long-term exposure to low concentrations can damage hearing, cause headaches, dizziness, fatigue, paleness, decreased vision and imbalance.

2. Repeated contact of pregnant women's skin will cause swelling, dryness, and blisters, which have a carcinogenic effect on the body, can develop into sepsis, and also affect the urinary system such as irregular menstruation and other problems. After long-term and severe exposure, there will be genetic effects.

3. Indoor formaldehyde, if inhaled through the nose under exposure, will cause permanent damage to the brain and kidneys. If the mother is harmed by volatile phenols during pregnancy, the side effects may affect the baby and cause defects. In serious cases, it may cause miscarriage, fetal malformation, ectopic pregnancy, toxoplasmosis and anencephaly.