To use the AOEC Exposure Look-Up enter a hazard, key word (partial strings are accepted), RTECS, CAS, or exposure code number. You may refine the search by sorting several ways e.g. click on Display All Asthmagens, then click on the drop down menu for further choices. You may sort on more than one category. The sort criteria will be listed at the bottom of the form.

Substances that have been reviewed using the AOEC Criteria for Designating Substances as Occupational Asthmagens on the AOEC List of Exposure Codes will have an R, Rs, Rr, or Rsr designation.