What Is The Recommended Safe Exposure Limit For Sodium Metabisulfite?

The recommended safe exposure limit for sodium metabisulfite varies depending on the country and regulatory agency. In the United States, the Occupational Safety and Health Administration (OSHA) has set a permissible exposure limit (PEL) of 5 mg/m3 as an 8-hour time-weighted average (TWA) for sodium metabisulfite. The American Conference of Governmental Industrial Hygienists (ACGIH) has also established a threshold limit value (TLV) of 5 mg/m3 as an 8-hour TWA. However, it is important to note that these values only represent guidelines and not absolute levels below which no health effects will occur. It is necessary to follow proper handling protocols and use appropriate personal protective equipment when working with sodium metabisulfite to minimize any potential risks.