Hazardous Materials Classes and Categories

This 3 minute safety training video covers: How to identify hazardous materials, what is hazardous materials table, what are the hazardous materials classes and categories, what are the other indicators that help identify hazardous materials, what are UN numbers and what does it represents? Click here to watch the 21 minute full length version.

The Full-Length Version is Available on DVD!

Atlantic Training's "HAZMAT Labeling" HAZWOPER Video Program assists facilities in complying with the employee training requirements of OSHA's HAZWOPER regulation (29 CFR 1910.120), and instructs employees who deal with hazardous materials that they can reduce the risk of accidental exposure by using the correct labels and placards on each chemical container. Hazardous materials and waste are part of many work situations, and can be found on many types of job sites. OSHA feels that it is so important for employees to know how to recognize these potentially dangerous substances (as well as how to handle and dispose of them properly) they have mandated that anyone working with these materials receive comprehensive training in this area.


In 1976, the U.S. Environmental Protection Agency (EPA) issued the Resource Conservation and Recovery Act (RCRA) to regulate the handling of hazardous waste "from cradle to grave". Since then other regulations have followed, including OSHA's 29 CFR 1910.120, also known as HAZWOPER. As part of these regulations, there are varying requirements for employee training, depending on an employee's specific level of involvement with hazardous materials.

Areas covered in the program include:

  • where hazardous material labels are used
  • OSHA labelling requirements
  • most common labelling systems
  • DOT Hazard Class labels and placards
  • the Hazardous Materials Identification System (HMIS)
  • target organ information labels
  • the National Fire Prevention Association (NFPA) Labelling System
  • hazardous waste labels
  • … and more.
  • Click here to watch a FREE full-length 21 minute preview.

Video Transcript

To make it easier for people to relate to their labels, the Department of Transportation has "grouped" materials according to the type of substance they are and the dangers they present. The DOT has categorized hazardous materials into classes. To help keep all of this information straight, the DOT regulations review each Hazard Class in detail. The regulations also contain the "Hazardous Materials Table", which provides detailed information about the labels that are required for various materials. In addition to Hazard Class Labels, there are other indicators that help identify hazardous materials.