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Symptoms of poisoning range from 0.06-0.07 milligrams per cubic meter per cubic meter of air; children experience mild asthma. When the indoor air reaches 0.10 milligrams per cubic meter; when there is odor and discomfort; reaches 0.50 milligrams per cubic meter; when it stimulates the eyes and causes tearing; reaches 0.60 milligrams per cubic meter; may cause throat discomfort or pain . At higher concentrations, it can cause nausea and vomiting, coughing, chest tightness, wheezing, and even pulmonary edema; when it reaches 3.00 mg per cubic meter, it will immediately cause death.
Excessive symptoms of formaldehyde 1. When you get up early in the morning, you feel bored, nauseous, and even dizzy.
2, people often have a cold at home.
3, although not smoking, but often feel uncomfortable throat, foreign body sensation, poor breathing.
4, children at home often cough, sneezing, decreased immunity.
5, family members often have allergies and other problems, but also grouped.
6. There is a disease in the family, and after leaving the environment, the symptoms have changed significantly and improved.
7. Newly-married couples are infertility for a long time and cannot find out the reasons.
8, pregnant women in the case of normal pregnancy found fetal malformations.
9. In a new moving house or a newly renovated house, indoor plants are not easy to survive, and leaves tend to yellow and wither.
10. After the new move, the domestic cats, dogs and even tropical fish somehow died.
11. I feel sore throat, dry air, and nothing after work.
12. The newly renovated home and office rooms or new buyers have irritating odors such as pungent and harsh eyes, and the odors are not dispersed for a long time.
Poisoning level 1. Formaldehyde stimulating response: manifested as a transient eye and upper respiratory tract irritation, such as eye irritation, tearing, sore throat, chest tightness, cough, etc. Chest auscultation and chest X ray no abnormal findings.
2, mild poisoning: There are blurred vision, dizziness, headache, fatigue and other systemic symptoms, examination showed conjunctival, pharyngeal obvious congestion, chest auscultation breath sound rough or smell dry rales. After comprehensive analysis, it can be diagnosed as mild poisoning. Chest X-ray examination showed no significant positive findings except for the enhancement of lung texture.
3. Moderate poisoning: According to the following comprehensive analysis, it can be diagnosed as moderate poisoning: a. Sustained cough, hoarseness, chest pain, difficulty in breathing, dry and wet rales on chest auscultation. Can be accompanied by increased body temperature and increased white blood cell count. b. Chest X-rays have scattered patches or patchy shadows.
4, severe poisoning: one of the following conditions, can be diagnosed as severe poisoning: a. laryngeal edema and asphyxia; b. pulmonary edema; c. coma; d. shock
How scary is formaldehyde?
Formaldehyde is a colorless gas with a strong pungent odor. Soluble in water, alcohol and ether. Formaldehyde is gaseous at room temperature and usually appears as an aqueous solution. Soluble in water and ethanol, 35-40% of the aqueous formaldehyde solution is called formalin. Acetaldehyde-based polycondensation reactions occur in the formaldehyde molecules to give phenolic resins (bakelite). Formaldehyde is an important organic raw material, mainly used in the plastics industry (such as phenolic resin, urea-formaldehyde plastics - electric jade), synthetic fibers (such as synthetic vinylon - polyvinyl formal), leather industry, medicine, dyes and so on.