Rosin based solder fumes and the link with occupational asthma

A health and safety briefing provided by the IET.

Rosin-based (fluxes) solder fumes are one of the most important causes of occupational asthma (variable airflow limitation or sensitivity caused by agents used in the occupation) in the UK, see: The fume can also cause irritation to the eyes and upper respiratory tract and on contact with the skin rosin-based solder fluxes and its fume can cause dermatitis.  Rosin is a solid form of pine tree resin colloquially known as ‘colophony’, which is used for many process materials including printing inks, varnishes, and adhesives.