Substances acquired prior to the enactment of "right-to-know" are grandfathered in,i.e. ,exempt from requirement for MSDSs.

Question

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The "right-to-know" laws require that all hazardous substances, regardless of when they were acquired, must have Material Safety Data Sheets (MSDSs) available to inform users of potential risks and safety precautions, without exemptions for substances acquired prior to the enactment of these laws.

Substances Acquired Prior to the Enactment of "Right-To-Know" Are Grandfathered