Analyze an SDS

DOT Division 1.3: Fire Hazard

Division 1.3 is the DOT explosives division for materials that present a fire hazard and either a minor blast hazard or a minor projection hazard, or both, but not a mass explosion hazard. The materials burn violently and can throw sparks or debris.

How it is defined

  • Materials burn so fast and intensely that radiant heat is a major hazard.
  • Fires may produce minor blast effects or throw items, but not a mass explosion.
  • Fires cannot be fought like ordinary fires; responders usually let them burn and protect exposures.

Summary of 49 CFR Parts 171 to 180. The regulations and the Hazardous Materials Table (49 CFR 172.101) control any shipment.

Label and placard

Colors
Orange background, black symbol
Symbol
Exploding bomb with “1.3” and a compatibility group letter

Orange label and placard with an exploding bomb and the division and compatibility group.

Packing groups

None. Class 1 is assigned by division and compatibility group. How packing groups work.

Common examples

  • Many propellants and smokeless powders in bulk
  • Some consumer and display fireworks
  • Some rocket motors

How it relates to GHS

Corresponds to the GHS explosives division with a fire hazard and a minor blast or projection hazard.

DOT classes and GHS classes are assigned under different rules, so a product can have different severity labels in each. See also all GHS hazard classes.

Safe handling reminders

  • Store away from heat, flame and sparks.
  • Follow the quantity limits and segregation rules for Class 1 storage.
  • Do not attempt to fight a fire involving the load unless trained and directed by the emergency guide.

Where to find it on an SDS

Section 14 will show Class 1, Division 1.3, a compatibility group letter and a UN number. Look in Section 14: Transport information. Hazard classification for the workplace is in Section 2. You can also see how a UN number points to a response guide on the UN and NA numbers page.

Frequently asked questions

What is Division 1.3?

Division 1.3 is the DOT explosives division for materials with a fire hazard and a minor blast or projection hazard, but not a mass explosion hazard. Many propellants and some fireworks fall here.

General reference only. It does not replace the supplier's SDS or the current federal regulations.