Yes it is a Group D--High explosive
explosive-material
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Black powder is classified as a low explosive. It has a relatively slow rate of reaction compared to high explosives, making it less powerful but still capable of causing significant damage. Black powder is primarily used in firearms and fireworks due to its propellant properties.
from explosive and flamable stuff such as black powder
Firecrackers are typically made by combining an explosive powder, such as flash powder or black powder, with a binding material, like paper or cardboard. The explosive powder is wrapped in the binding material, which is then sealed to create the firecracker. The fuse is attached to the firecracker to ignite the explosive powder when lit.
Firecrackers are typically made of paper or cardboard tubes filled with explosive powder such as black powder or flash powder. They are ignited using a fuse to create a loud explosive sound when ignited.
One example of a relatively weak explosive is black powder (gunpowder). It is commonly used in fireworks and small arms ammunition, but is not as powerful as other high explosives like TNT or C-4.
The oldest known explosive is black powder, also known as gunpowder. It was invented in ancient China in the 9th century and is composed of potassium nitrate, charcoal, and sulfur. Black powder was used in firearms, fireworks, and mining operations.
the explosive used was certainly black powder, casing materials are uncertain though.
That will depend on the local laws, such as the fire codes, and the type of powder. Black powder is an explosive, and is typically more restricted than smokeless powder. Check with the Fire Marshall where you live.
Iridium is not an explosive metal.
Explosives are classified by their sensitivity, energy output, and chemical composition. They can be grouped into categories such as high explosives (e.g., TNT, C4), low explosives (e.g., black powder, fireworks), and blasting agents (e.g., ANFO). These categories are further divided based on their intended use and potential hazards.
Black powder is much weaker than smokeless powder. Smokeless powder, for this reason, once invented(much after black powder), replaced black powder in guns. However, black powder is still used in fireworks because the extreme explosive power of smokeless powder would prove too dangerous in fireworks.
Because it's a finely divided powder, and almost all finely divided powders are explosive.