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MSDS Glossary of Terms
- UN / NA #
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United Nations (UN) Numbers are four-digit numbers used to identify hazardous chemicals or classes of hazardous materials worldwide. North American (NA) Numbers are identical to UN numbers. If a material does not have a UN number, it may be assigned an NA number. These numbers are required for the shipment of hazardous materials.
MSDSonline offers the following MSDS and GHS terms as a free service. Information was compiled from a variety of sources. As outlined in this site’s Terms of Use, MSDSonline is not responsible for the accuracy, content or any aspect of the information contained therein. Any trademarks and/or brand names used in this index are the property of their respective owners.