Haz-Com and Hazards Not Otherwise Classified (HNOC)

Haz-Com Hazards Not Otherwise Classified (HNOC) Image

We recently wrote a post to help you comply with the new labeling requirements mandated by the Hazard Communication/HazCom 2012 alignment with the Globally Harmonized System (GHS). If you missed that post, you can read it here.

In this post, we’re going to give some information on what OSHA calls “hazards not otherwise classified,” or HNOC.

In addition, you may want to read our other post addressing HazCom requirements for pyrophoric gases, simple asphyxiants, and combustible dusts.

So, what’s a “hazard not otherwise classified,” you ask?

A “hazard not otherwise classified,” also known as an HNOC, is a hazard that’s not covered by the GHS classification system included as part of the HazCom 2012 revision. And it’s also not a pyrophoric gas, a simple asphyxiant, or a combustible dust.

If the manufacturer determines that a chemical presents an HNOC, that hazard must be addressed in section 2 of the safety data sheet shipped with the chemical (and made otherwise available).

Haz-Com GHS Aligned Label and HNOC Labeling Area Image

Including information about the HNOC on the chemical label is not mandatory, but manufacturers can choose to do so. In those cases, the information should be put in the Supplemental Information section of the label.

For more information, check out our online Hazard Communication training course. We’ve included a sample video below.

And don’t forget to download the free guide below as well!


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Jeffrey Dalto

Jeffrey Dalto

Jeffrey Dalto is an Instructional Designer and the Senior Learning & Development Specialist at Convergence Training. He's worked in training/learning & development for 25 years, in safety and safety training for more than 10, is an OSHA Authorized Outreach Trainer for General Industry OSHA 10 and 30, has completed a General Industry Safety and Health Specialist Certificate from the University of Washington/Pacific Northwest OSHA Education Center and an Instructional Design certification from the Association of Talent Development (ATD), and is a member of the committee creating the upcoming ANSI/ASSP Z490.2 national standard on online environmental, health, and safety training. Jeff frequently writes for magazines related to safety, safety training, and training and frequently speaks at conferences on the same issues, including the Washington Governor's Safety and Health Conference, the Oregon Governor's Occupational Safety and Health Conference, the Wisconsin Safety Conference, the MSHA Training Resources Applied to Mining (TRAM) Conference, and others.

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