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Material Safety Data Sheets (MSDS), now commonly referred to as Safety Data Sheets (SDS), are considered required when dealing with chemicals. These documents provide essential information about the hazards associated with chemical substances, including handling, storage, emergency measures in case of spill or exposure, and proper disposal methods.

The requirement for SDS originates from occupational safety regulations, which mandate that employers must ensure that workers have access to this information to promote a safe working environment. The presence of an SDS helps inform employees about the chemical's risks and how to effectively manage those risks, making it a critical component of workplace safety protocols.

Having readily accessible SDS fosters compliance with health and safety regulations and ensures that all personnel are adequately informed to handle chemicals safely. This requirement emphasizes the importance of health and safety in environments where hazardous materials are present.