Formaldehyde, chemical formula is HCHO, is a naturally occurring organic compound, is a colorless, odorless, irritating air pollution poison. The volatilization period ranges from three to fifteen years. It is an organic compound whose chemical structure contains a carbon-oxygen bipyramid carbon-oxygen double bond, an oxygen atom, a negative saddle, and an electron cloud with a high carbon-oxygen double bond, which is biased towards the oxygen atom, making the carbon atom positively charged, thus having the properties of a nucleus. Facilitates attack by nucleophiles.
The World Health Organization has carried out research on formaldehyde, using mice to carry out formaldehyde toxicity experiments, and found that its growth rate has slowed down significantly. In addition, the report pointed out that when the researchers increased the formaldehyde concentration to 120 mg/m3 (ie 0.12ppm), both rats and mice experienced drooling, breathing difficulties, vomiting, convulsions and death; after that, the researchers added formaldehyde to At concentrations up to 1.2 mg/m3 (i.e. 0.0012 ppm), their respiratory rate decreased, the eyes were irritated, the breathing airway felt obstructed and unobstructed, and mice were more sensitive than rats.
Properties of formaldehyde:
In daily, most wooden furniture and building materials have the opportunity to produce harmful substances-formaldehyde, which will cause symptoms such as chemical sensitivity to the human body, but the allergic reactions caused by these chemical sensitivity have different effects on each person. , the presence or absence of symptoms also varies from individual to individual. However, if you are in an indoor air pollution environment for a long time, the impact on the human body will directly affect your health for a long time, even if it does not appear immediately.
Formaldehyde has a strong stimulating effect on human skin and mucous membranes, which can make proteins in cells coagulate and deform, and inhibit all cell functions. Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, and cause nasopharyngeal cancer, colon cancer, brain tumor, and cell nucleus. Gene mutation, DNA single-strand cross-linking and DNA-protein cross-linking and inhibition of DNA damage repair, pregnancy syndrome, cause chromosomal abnormalities in newborns, leukemia, and cause memory and intelligence decline in adolescents. Excessive formaldehyde stored in the body and converted into methanol in the body also has a strong damage to the retina. In general, the impact on human health is mainly in abnormal sense of smell, irritation, allergy, edema, abnormal lung function, abnormal immune function, etc. Therefore, extra attention should be paid to infants and pregnant women, because these two types of people are extremely sensitive to formaldehyde, and the related effects are relatively large and harmful.
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ELIMINATE – Using Nucleophilic Addition Reaction – Through the reaction of the nucleophile in the clear aldehyde with the double bond of formaldehyde, a new covalent bond is formed, thereby forming a stable and harmless substance to achieve the effect of removing formaldehyde.