DOT Division 1.6: Extremely Insensitive Articles
Division 1.6 is the DOT explosives division for articles that contain only extremely insensitive detonating substances and show a negligible probability of accidental initiation or propagation. It applies to articles, not to bulk substances.
How it is defined
- Division 1.6 is limited to articles (such as certain munitions) and does not apply to loose substances.
- The explosive material inside must be extremely insensitive according to the prescribed tests.
- It is a narrow category and most facilities will never handle it.
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 numbers
- Symbol
- The division number “1.6” and compatibility group letter N
Orange label and placard showing 1.6 and the compatibility group.
Packing groups
None. Class 1 is assigned by division and compatibility group. How packing groups work.
Common examples
- Certain insensitive munitions and warheads
How it relates to GHS
Corresponds to the GHS explosives division 1.6.
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
- Handled mainly in defense and aerospace supply chains under government rules.
Where to find it on an SDS
Section 14 will show Division 1.6, compatibility group N 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 1.6?
Division 1.6 is the DOT explosives division for articles that contain only extremely insensitive detonating substances and have a negligible probability of accidental initiation.
General reference only. It does not replace the supplier's SDS or the current federal regulations.