If you are unsure about a chemical's hazards on site, what is the appropriate action?

• A. Rely on memory and scent.
• B. If unsure, consult the up-to-date SDS and trained personnel before handling.
• C. Handle first, ask questions later.
• D. Consult the SDS only after completing the task.

Answer: (B)

Understanding chemical hazards on site requires not proceeding without solid information. The best action is to pause and consult the most current Safety Data Sheet (SDS) and talk with trained personnel before handling the chemical. The SDS provides detailed hazard information, including the specific dangers, required personal protective equipment, safe handling and storage procedures, ventilation or engineering controls, spill response, and first-aid measures. Because it’s updated to reflect the latest knowledge and regulatory requirements, using the current SDS helps ensure you apply the correct precautions for that substance and task.

Trained personnel can interpret the SDS in the context of your specific worksite, advising on appropriate controls and confirming you have the right PPE and procedures in place. Relying on memory or scent is unsafe because many hazards are odorless or not perceptible, and dangerous exposures can occur without warning. Waiting to consult after starting or finishing the task fails to prevent harm.