Explosive Chemicals

Have long ago people create a substance that can be explode, that can be used to break down a rock and many other hard materials. Centuries ago Chinese people have used black powder in their propelling missile that was demonstrated shortly after 1300. Then people found of nitroglycerin and nitrocellulose in about 1850 as use on dynamites and the mercury fulminate blasting cap soon after.

The type of explosive chemicals is classified into their sensitivity and power on giving explosion. There are three fundamental types of explosives, mechanical, atomic and chemical explosion. According to their behavior, chemical explosive divide into two division:

1. Detonating, or high explosives, (a) primary, or initiating explosives (detonation); (b) booster and secondary explosives.
2. Deflagrating, or low explosives.

There exist a very great difference between the detonating and deflagrating explosive types. High explosives detonate at very high rates, from 2 to 9 x 103 m/s and the reaction front is a shock phenomenon moving actively throughout the material. Low explosives, or propellants, burn in layers parallel to the surface at low rates, around 10-2 m/s, and the reaction front is a flame.