How often must manufacturers or importers update SDSs?

The correct response is that manufacturers or importers must update Safety Data Sheets (SDSs) within one month of learning new hazard information. This requirement is in place to ensure that all relevant safety information is current and readily available to those who may be exposed to hazardous substances.

Timely updates are crucial for maintaining safety in workplaces that handle chemicals, as new hazard information can arise from research, studies, or regulatory changes. By mandating an update within such a short timeframe, OSHA helps to ensure that workers, emergency responders, and employers have access to the latest information that can inform safe practices and emergency procedures. The objective is to minimize risks associated with exposure to hazardous materials by providing accurate and current data.

The other options do not provide the correct timeframe or rationale for updates as per OSHA guidelines. For example, updating SDSs every six months may lead to delays in disseminating critical safety information. Likewise, an update within three months or only upon customer request does not reflect the urgent need for hazard communication that is part of the regulation.