FORMALDEHYDE – HARMFUL AND TOXIC EFFECTS
Formaldehyde has been identified by the World Health Organization as carcinogenic and teratogenic substances For children and pregnant women are particularly sensitive to formaldehyde, but also greater harm It has become a hard-to-solve worldwide problem
WHAT IS FORMALDEHYDE?
Formaldehyde (chemical formula HCHO, molecular weight: 30.03, is a colorless, strong irritating odor gas. Soluble in water, alcohol ether. It is very volatile at room temperature, as the temperature increases volatilization speed. Formaldehyde ranks second in the list of top priority toxic chemicals in our country. Formaldehyde has been identified as a carcinogen and teratogenic substance by the World Health Organization (WHO). It is a recognized source of allergic reactions and one of the potential potent mutagens.
Indoor formaldehyde mainly comes from decoration materials and new combinations of furniture, such as artificial wood, anti-corrosion coatings, plastic flooring, etc .; household use of carpets, textiles, and even food, cosmetics, automobiles, the release period of up to 3-15 years, Hot tide will be volatile from the deep material, serious pollution of the environment, has become difficult to solve the global problem.
THE LOWEST CONCENTRATION OF FORMALDEHYDE PATHOGENICITY:
At concentrations of 0.06 to 0.07 mg / m3 per cubic meter of air, children experience mild asthma. Odor and discomfort may occur when the formaldehyde content in indoor air is 0.1 mg / m3; up to 0.5 mg / m3 irritating to the eyes, causing tearing; reaching 0.6 mg / m3, can cause throat irritation or pain. Higher concentrations can cause nausea, vomiting, coughing, chest tightness, wheezing and even pulmonary edema; at 30 mg / m3, they can cause immediate death.
Long-term exposure to low doses of formaldehyde can cause chronic respiratory diseases, causing nasopharyngeal cancer, colon cancer, brain tumor, menstrual disorders, nuclear gene mutations, DNA single chain within the connection and DNA and protein cross-linking and DNA damage repair, pregnancy Syndrome, causing neonatal chromosomal abnormalities, leukemia, causing adolescent memory and mental decline.
FORMALDEHYDE ON THE HUMAN BODY DAMAGE:
Studies have shown that: formaldehyde has a strong carcinogenic and cancer-promoting effect. Formaldehyde on human health mainly in the abnormal smell, irritation, allergies, lung dysfunction, abnormal liver function and immune dysfunction and so on. Among all the contacts, children and pregnant women are particularly sensitive to formaldehyde, which is more harmful. The most harmful to the elderly, children and pregnant women. Long-term excessive inhalation of formaldehyde can cause nasopharyngeal cancer, laryngeal cancer and other serious diseases. “A recent study released by the National Cancer Institute on May 12, 2009 shows that chemical factory workers who frequently contact with formaldehyde are much more likely to die of cancer such as blood and lymphoid cancers than workers who have less exposure to formaldehyde. Workers surveyed 25,000 chemical plant workers in the production of formaldehyde and formaldehyde resin and found that workers who exposed the most opportunities for formaldehyde than those with the least chance of death by 37% .According to researchers, long-term exposure to formaldehyde increased suffering from the Huo Odds of special cancers such as Kiridinoma, multiple myeloma and myeloid leukemia.
SYMPTOMS OF FORMALDEHYDE POISONING
Obvious eye and upper respiratory tract mucosal irritation. Mainly for the conjunctival hyperemia, inflamed, dyspnea, breathing heavy, hoarse throat, speech or dry dumb or wet tired. Poisoned people can feel their breath sounds bold. Another manifestation of mild symptoms of formaldehyde poisoning is one to two degrees of throat edema.
Cough more than expectoration, chest tightness, difficulty breathing and dry wet gong sound. Chest X-ray through the chest when the real texture of the lungs, into small dot-like dots scattered or patchy shadow, which is the medical model of bronchial pneumonia; throat edema weight gain to three. Blood gas analysis is accompanied by mild to moderate hypoxemia.
Pulmonary and throat conditions deteriorated, pulmonary edema and fourth degree laryngeal edema, blood gas analysis also will be severe, severe hypoxemia.
It is understood that formaldehyde exceeded 3 times the following, the general is not smell irritating smell, when smell irritating odor, it has exceeded 4 to 8 times more than enough to make you and your family hurt. It can be said that the smell is not even more terrible smell, because you are most likely poisoning unconsciously. Especially in the summer, if you do not open the windows for ventilation, the releasing amount of harmful substances such as car formaldehyde will accumulate more and more, the harm will be more and more.