From OSHA Underground:

In the global workplace, identifying and evaluating the risk from combustible dust related fires and explosions supposedly begin with the information provided on Safety Data or Material Safety Data Sheets (SDS/MSDS)…Yet vital combustible dust physical characteristics of ignition sensitivity and explosion severity is lacking in a majority SDS’s…unfortunately, harmonization in communicating the physical and chemical hazards of combustible dust is also deficient in the newly implemented United Nations GHS.

Currently GHS recognizes combustible dust is a hazard by identifying dust in the SDS. Solely identifying is not sufficient enough. The global workplace needs additional information such as guidance in fire-fighting measures, exposure controls/personnel protection, handling/storage, physical and chemical properties, etc.

…Currently OSHA is in a general industry combustible dust rulemaking process…[OSHA] In addition to proposing to the United Nations committee that combustible dust be classified in the GHS Safety Data Sheets its also seeking comments from stakeholders in the USA whether the interim coverage of combustible dust as an unclassified hazard in the GHS SDS is sufficient in communicating the risk throughout the workplace…

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Relevant Nexreg Compliance Links: CPSC compliance, OSHA MSDS authoring, MSDS authoring