What hazard label goes on a 1993 tanker CDL question?
UN 1993 is 'flammable liquid, not otherwise specified,' which is a Class 3 flammable liquid. A tanker carrying it would display the red FLAMMABLE (Class 3) placard, with 1993 shown on the orange panel or in the placard center. The number identifies the material; the red diamond shows the hazard.
1993 is a UN identification number
The four-digit 1993 is a UN identification number, not a hazard class. UN 1993 covers flammable liquids that are not otherwise specified, a catch-all for Class 3 flammable liquids. So the hazard is a flammable liquid.
The placard is Class 3 flammable
A tanker of UN 1993 would carry the red Class 3 FLAMMABLE placard. The 1993 appears on an orange panel or in the center of the placard to identify the specific material, while the red diamond and the 3 show that it is flammable.
How to handle the number
You do not memorize every UN number. Recognize that a four-digit number identifies the material and is looked up in the Emergency Response Guidebook. Verify the placard and details against the shipping papers, the ERG, and your official manual.
Frequently asked questions
- What is UN 1993?
- It is the UN identification number for flammable liquids that are not otherwise specified, a Class 3 flammable liquid. Confirm in the current Emergency Response Guidebook.
- What placard goes on a UN 1993 tanker?
- The red Class 3 FLAMMABLE placard, with 1993 shown on an orange panel or in the placard center. Verify with the shipping papers and your manual.
- Is 1993 a hazard class?
- No. It is a UN identification number for the material. The hazard class, flammable liquid (Class 3), is shown by the red placard and the number 3.