Where are disclosures of Hazards Not Otherwise Classified (HNOCs) required?

Disclosures of Hazards Not Otherwise Classified (HNOCs) are specifically required in Section 2 of a chemical's Safety Data Sheet (SDS). This section is crucial as it provides detailed information regarding the chemical's classification and the hazards it may pose.

The Safety Data Sheet is an essential component of hazard communication regulations, designed to inform users about the potential risks associated with a chemical product and instructions on safe handling, storage, and emergency measures. Section 2, which focuses on hazardous identification, mandates that any HNOCs be clearly indicated to ensure that employees and emergency responders are aware of them. This requirement helps promote a safe working environment by ensuring that all potential hazards, even those not covered by typical categories, are communicated effectively.

While disclosures may also be relevant in areas like product labels, employee training manuals, and workplace signage, the formal requirement to disclose HNOCs specifically falls under the guidelines for the Safety Data Sheet, making it the most appropriate answer in this context.