It is also a possible mutagen and teratogen. It is highly toxic if swallowed, inhaled, or absorbed though skin or mucous membranes. Formaldehyde reacts vigorously with oxidizers and, at its highest concentrations, is a combustible liquid. Eye and Skin Exposure Formaldehyde is corrosive, and the eyes are especially vulnerable. Formaldehyde is also a sensitizing agent.
Subsequent exposures can produce symptoms more quickly and at lower concentrations.
Symptoms of exposure may include coughing, eye or skin irritation, allergic reactions, vomiting, and diarrhea. As a sensitizer, subsequent formaldehyde exposures can produce symptoms more quickly and at lower concentrations, while olfactory fatigue can significantly raise the odor threshold concentration. Symptoms of exposure may include coughing, allergic reactions, difficulty breathing, vomiting, and diarrhea. Safety Precautions for Formaldehyde Use Employee Information and Training Employees who handle formaldehyde must receive documented training on the hazards of formaldehyde and what to do in case of an exposure or spill. The MSDS and this Fact Sheet are excellent tools for training employees on the hazards of formaldehyde.