The IRSST just published a guide for safe use of isocyanates. The guide is intended for anyone working in the field of occupational health and safety. It is designed to educate, inform and raise awareness, and has no regulatory value. Readers will come to understand the chemical hazards associated with isocyanates and will be able to make informed decisions about ways to reduce exposure and possibly the incidence of occupational asthma. The guide is not a substitute for the information contained in Material Safety Data Sheets.