1.4D

Division 1.4 Substances and articles which present only a slight risk of explosion in the event

of ignition or initiation during carriage. The effects are largely confined to the

package and no projection of fragments of appreciable size or range is to be

expected. An external fire shall not cause virtually instantaneous explosion of

almost the entire contents of the package.

 

D Secondary detonating explosive substance or black powder or article containing a secondary

detonating explosive substance, in each case without means of initiation and without a

propelling charge, or article containing a primary explosive substance and having two or more

effective protective features.