Gives off formaldehyde gas when heated. Swallowed Causes severe irritation and inflammation of mouth, throat and stomach. Severe stomach pains will follow with possible loss of consciousness. Eye Can cause chemical burn - damage irreversible. Exposure to high vapour concentrations, or to dust, causes irritation and tearing.
Skin Can cause moderate injury - reddening and swelling.
Dust can cause drying, cracking and scaling. Inhaled Highly irritating to nasal passages. May cause inflammation of lining of nose, throat and lungs. Signs and symptoms of pulmonary oedema can be delayed for several hours. May cause sensitisation of the respiratory system.