Which of the following would be regulated under OSHA's Hazard Communication Standard?

The Hazard Communication Standard (HCS) set by OSHA is primarily concerned with ensuring that employees are informed about the hazards of chemicals they might be exposed to in the workplace. This includes the communication of information about chemical identities, hazards, and the necessary precautions to take when handling these materials.

Bonding etchant specifically falls under this regulation because it is a chemical substance used in dental practices that can pose health risks if not handled properly. The HCS requires that such chemicals have labels indicating their hazards and must be accompanied by safety data sheets (SDS) that provide detailed information on safe handling and emergency measures.

In contrast, while chemical spills are a serious safety concern, they are not specifically regulated under the HCS but rather would fall into other safety guidelines and procedures for managing emergencies. Infection control procedures are mostly dictated by other standards focused on hygiene and infection prevention, rather than chemical hazards. Similarly, all waste management products may not necessarily be regulated by the HCS, as they depend on the nature of the waste in question. Only those that contain hazardous chemicals require adherence to the Hazard Communication Standard. Thus, bonding etchant is the correct choice as it directly relates to the training and safety measures prescribed by the HCS.