Which section of the MSDS explains how to treat a worker who has been overexposed to a material?

• A. First aid measures
• B. Hazardous ingredients
• C. Stability and reactivity
• D. Handling and storage

Answer: (A)

Knowing how to respond to exposure incidents is what this item focuses on. The first aid measures section of an MSDS explains the immediate actions to take when a worker has been overexposed. It covers what to do for different exposure routes—how to rinse or decontaminate eyes or skin, how to move a person to fresh air if inhaled, and what to do if ingestion occurs. It often includes guidance on removing contaminated clothing, monitoring for symptoms, and when to seek medical help. This part gives the quick, step-by-step medical response needed right away and may note information to share with responders. The other sections describe what the material is made of (hazardous ingredients), how it might react or stay stable under certain conditions (stability and reactivity), and how to handle and store it safely. Those sections address hazards and precautions, not the immediate treatment after exposure.