According to numerous medical reports, direct skin contact with formalin may cause allergic reactions, dermatitis, or eczema, manifesting as skin itching, erythema, dermatitis, necrosis, and other symptoms. Individuals who are occupationally exposed to formalin over extended periods frequently experience such phenomena.
Therefore, avoid direct skin contact with formalin. If accidental contact occurs, immediately rinse the affected area with clean water.
Carcinogenic Effects
Numerous scientific studies and animal experiments have long indicated that prolonged exposure to formalin may contribute to the development of cancer.
Prolonged exposure allows trace amounts of formaldehyde to accumulate in the body. Approximately 35% is metabolized into formic acid and excreted via urine, while the remaining 65% is further broken down into carbon dioxide and water. This process may cause cellular degeneration and abnormalities.
Respiratory Tract Irritation
Formalin's primary component is formaldehyde, which is highly volatile and a potent irritant. Inhalation can irritate the mucous membranes of the mouth, nose, and respiratory tract, causing symptoms ranging from mild pain, coughing, excessive phlegm, insomnia, nausea, and headaches to severe inflammation or even edema of the respiratory tract. Ingestion can be fatal.
How to Prevent Formalin Poisoning
Formalin is a water solution of formaldehyde typically stored between 23°C and 26°C. Elevated temperatures accelerate its evaporation. Therefore, preventing formalin poisoning requires not only avoiding accidental ingestion but also safeguarding against high ambient temperatures that could cause formalin to evaporate and lead to poisoning.