b56ab5ea_tawba_Valley_Community_College__Description_of_Hazard
[Classification] Sensitizers [Examples] Chlorinated Hydrocarbons, Formaldehyde, and Chromium compound [Description of Hazard] 
Affect certain individuals by means of an allergic reaction after repeated exposure. The same chemical can have no adverse reaction in others. A chemical is only considered a sensitizer, if it causes a reaction in a substantial portion of exposed people.
Catawba Valley Community College