What two essential details must an MSDS contain?

The correct answer involves critical components of the Material Safety Data Sheet (MSDS), now commonly referred to as Safety Data Sheet (SDS). An SDS must include comprehensive information necessary to ensure safe handling and use of hazardous materials.

The cover page with an alphabetical listing of chemicals and an effective date is significant because it provides quick access to vital safety information about materials. This organization allows individuals who handle these substances to swiftly locate the relevant data they need, especially in urgent situations. The effective date indicates the currency of the information, assuring users that they are relying on the latest safety standards and data available.

While other options include important aspects of safety data, such as storage instructions or emergency contacts, they do not encompass the structured organization and validity assurance that the correct answer highlights. An SDS is most effective when it is user-friendly and provides up-to-date information, hence the emphasis on the cover page and alphabetical listing serves a practical purpose in workplace safety and compliance.