Dynamite

Explosive material based on nitroglycerin

Inserting dynamite into a hole

Dynamite is an explosive material that is composed of nitroglycerin, sorbents (such as powdered shells or clay), and stabilizers. It was invented by the Swedish chemist and engineer Alfred Nobel in 1867. Dynamite revolutionized the construction and mining industries by providing a safer and more manageable explosive than the previously used nitroglycerin.

History

Women mixing dynamite at Nobel’s Ardeer Factory in 1897

The invention of dynamite is credited to Alfred Nobel, who sought to create a safer alternative to nitroglycerin, which was notoriously unstable. Nobel discovered that by mixing nitroglycerin with an absorbent substance, such as diatomaceous earth, he could create a stable explosive that could be safely handled and transported. He patented this invention in 1867 and named it "dynamite," derived from the Greek word "dynamis," meaning "power."

Nobel's invention was quickly adopted for use in construction, demolition, and mining, where it was used to blast rock and clear paths for railways and roads. The use of dynamite significantly reduced the time and labor required for such projects.

Composition and Properties

Diagram of dynamite

Dynamite consists of three main components: nitroglycerin, an absorbent material, and a stabilizer. The absorbent material, often diatomaceous earth, acts as a carrier for the nitroglycerin, making it less sensitive to shock and friction. Stabilizers are added to prevent the nitroglycerin from separating from the absorbent material.

Dynamite is typically sold in the form of sticks, which are wrapped in paper and have a fuse inserted into one end. The explosive power of dynamite is measured in terms of its "strength," which is often compared to an equivalent amount of TNT (trinitrotoluene).

Applications

Dynamite has been widely used in various industries, including construction, mining, and demolition. In construction, it is used to clear rock and earth for the building of roads, railways, and tunnels. In mining, dynamite is used to break apart rock and extract valuable minerals. In demolition, it is used to safely bring down structures.

Safety and Handling

While dynamite is safer than pure nitroglycerin, it is still a powerful explosive and must be handled with care. Proper storage and handling procedures are essential to prevent accidental detonation. Dynamite should be stored in a cool, dry place and kept away from sources of heat and ignition.

Legacy

Nobel's Extradynamit label

Alfred Nobel's invention of dynamite had a profound impact on the world, facilitating major engineering projects and contributing to the industrialization of many countries. Nobel's legacy is also marked by the establishment of the Nobel Prizes, funded by his fortune, which he left to recognize outstanding contributions to humanity.

Related pages

• Alfred Nobel
• Nitroglycerin
• Explosive material
• TNT