Detonator is a device used to detonate explosives. Industrial and military explosives are generally relatively stable and cannot be detonated with open flames. Other explosives, such as detonators, must be used for detonation. In the 19th century, Swedish chemist Alfred Nobel discovered that diatomaceous earth became stable after adsorbing nitroglycerin, but it had to be detonated with other explosives, which were detonators. Detonators are divided into non electrical detonators and electrical detonators. Detonators are usually composed of a type of initiating explosive called "ASA compound" and trace amounts of TNT, tetraryl, or PETN as initiating enhancers enclosed in a thin metal tube with a diameter of about 10 mm. The "ASA complex" is a mixture of lead azide (Pb (N3) 2, Lead Azide), lead 2,4,6-trinitroresorcinate (C6HN3O8Pb, Lead styphnate), and aluminum powder, named after the English prefix. Diazodinitrophenol (DDNP) can also be used as a primary explosive to reduce the release of lead into the atmosphere. Old style detonators used Mercury (II) fulminate as the primary explosive, usually mixed with potassium chlorate to increase efficiency
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