Formaldehyde (chemical molecular formula HCHO, molecular weight: 30.03) is a colorless gas with a strong pungent smell. Soluble in water and alcohol ether. Formaldehyde is gaseous at room temperature and usually exists in the form of aqueous solution. Its 40% aqueous solution is called formalin, and its boiling point is 19 degrees. Therefore, it is easy to volatilize at room temperature, and the volatilization speed is accelerated with the increase of temperature.
Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, nasopharyngeal carcinoma, colon cancer, brain tumor, menstrual disorder, gene mutation in the nucleus, DNA single-strand cross-linking and DNA-protein cross-linking, inhibition of DNA damage repair, pregnancy syndrome, chromosomal abnormalities in newborns, leukemia, and memory and intelligence decline in adolescents.
The harm of benzene to human body "benzene", commonly known as Tianna water, is a colorless and transparent liquid with a special aromatic smell, which is volatile and flammable. Steam is explosive and volatilizes quickly at room temperature. Inhalation of high concentration benzene vapor in a short time can lead to acute benzene poisoning, excitement or drunkenness, accompanied by symptoms of mucosal irritation. Mild dizziness, headache, nausea, vomiting, gait instability; Severe coma, convulsion, circulatory failure and even death; Inhalation of high concentration benzene in a short period of time may cause subacute benzene poisoning, dizziness, headache, fatigue, insomnia, menstrual disorder and other symptoms, as well as aplastic anemia and acute leukemia, characterized by rapid development of anemia, bleeding and infection. The harm of benzene poisoning to the body comes down to three kinds: carcinogenesis, disability and teratogenesis. So the taste of super glue is toxic.