• Some are used as primary explosives, namely lead picrate or potassium picrate which find their use as primers for cartridge ammunition. (wikipedia.org)
  • Sensitive materials that can be initiated by a relatively small amount of heat or pressure are primary explosives and materials that are relatively insensitive are secondary or tertiary explosives . (infogalactic.com)
  • Though early thermal weapons , such as Greek fire , have existed since ancient times, the first widely used explosive in warfare and mining was black powder , invented in 9th century China. (infogalactic.com)
  • The first useful explosive stronger than black powder was nitroglycerin , developed in 1847. (infogalactic.com)
  • The pictogram for explosive chemicals used by the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). (infogalactic.com)
  • As a result, storage of picric acid (or mixtures containing it) in metal containers is strongly discouraged due to the high risk of accidental explosion. (wikipedia.org)
  • An explosive material , also called an explosive , is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light , heat , sound , and pressure . (infogalactic.com)
  • At one end of the layer of explosive, the explosion is initiated. (infogalactic.com)
  • The explosion spreads from the initiation site throughout all the explosive. (infogalactic.com)
  • The sodium azide was present as small pellets, which was dissolved in water to remove insoluble additives such as iron oxide and/or silicates which are added to react with the metallic sodium that is formed when the azide breaks down (into nitrogen gas and sodium metal vapour of course). (sciencemadness.org)
  • If there are mineral deposits where large masses of native metal (usually copper) are present in the ground, using explosives to "liberate" the ore typically doesn't work well. (infogalactic.com)
  • Ferrous picrate is used in some applications as a diesel fuel additive to achieve better mileage. (wikipedia.org)
  • The bit I have got is if you pass N2O over the melted sodamide you get sodium azide and water, the water should be blown away. (sciencemadness.org)
  • [1] The increased availability of chemicals has allowed the construction of improvised explosive devices . (infogalactic.com)
  • Picrates of some metals tend to be significantly more sensitive to impact, friction and shock than picric acid itself. (wikipedia.org)
  • Whether the mine is on the surface, or buried deep underground, there are often times when the use of either a high or low explosive (detonation or deflagration) in a confined space can be used to liberate a fairly specific sub-volume of a brittle material in a much larger volume of the same or similar material. (infogalactic.com)
  • Picrates of some metals tend to be significantly more sensitive to impact, friction and shock than picric acid itself. (wikipedia.org)
  • As a result, storage of picric acid (or mixtures containing it) in metal containers is strongly discouraged due to the high risk of accidental explosion. (wikipedia.org)
  • Ethers and esters of picric acid are also called picrates. (wikipedia.org)
  • The ether methyl picrate (CAS# 606-35-9) has the formula (O2N)3C6H2OCH3. (wikipedia.org)