Which MSDS section covers health hazards?

• A. Health hazard
• B. Fire and explosion hazards
• C. Control measures
• D. Physical chemical characteristics

Answer: (A)

The part of an MSDS that focuses on health effects is the health hazards section. This section details how a chemical can affect people, including the possible acute effects from short-term exposure (like irritation, dizziness, or headaches) and chronic effects from long-term exposure (such as organ damage or increased cancer risk). It also covers routes of exposure (inhalation, skin contact, ingestion) and highlights target organs to help you understand who might be most at risk. This information is essential for deciding what precautions to take, such as appropriate engineering controls and personal protective equipment.

Fire and explosion hazards describe flammability and ignition risks, not how the chemical harms health. Control measures tell you what safety practices and PPE are needed, but they summarize how to manage exposure rather than detailing the specific health effects. Physical chemical characteristics cover properties like odor, appearance, boiling point, and vapor pressure, not health impact.