Question 93Safety & Environmental - 1st Asst/Chief

The correct answer is B) sensitizer. A sensitizer is a chemical that can cause an allergic-like reaction in some people after repeated exposure, usually through skin contact or inhalation. This is an important health hazard term listed on a Material Safety Data Sheet (MSDS), as it indicates the potential for an individual to develop an allergic response to the chemical over time, even if they did not initially have a reaction. The other answer choices are incorrect because: A) skin contact hazard is a more general term, C) pyrophoric hazard refers to chemicals that ignite spontaneously, and D) oxidizer refers to chemicals that can promote combustion, but do not necessarily cause allergic reactions.