Exploding Powder

Bakufuh. Detonating Explosive or Exploding Powder. A light-gray to tan pdr consisting of MF (Mercuric Fulminate) 28.8, K chlorate 37.7, Antimony trisulfide 31.5 abrasive 2%. Accdg to documents, Mks I III are used in ammunition primers while Mk 2 is used in fuze primers (Ref 1, p 25 Ref 5, pp 362—63). 

In both underwater tests and ignition in a mortar, the amount of energy released from exploding powder is smaller, while in the in-sand explosion, the pulverized material is likely to explode before it is discharged outwardly, blasting the sand away. 

Potassium 3-aniinopropylaniide [56038-00-7] (KAPA), KNHCH2CH2CH2-NH2, pX = 35, can be prepared by the reaction of 1,3-diaminopropane and potassium metal or potassium hydride [7693-26-7] (57—59). KAPA powder has been known to explode during storage under nitrogen in a drybox, and is therefore made in situ. KAPA is extremely effective in converting an internal acetylene or aHene group to a terminal acetylene (60) (see Acetylene-DERIVED chemicals). 

Oxidizing elements such as oxygen, sulfur, and halides react with zinc at room temperature in the presence of moisture, but do not in its absence. At higher temperature, the reactions can be vigorous even when dry. Eor instance, a powdered mixture of zinc and sulfur explodes if warmed and zinc reacts... 

Graphite oxide may explode when heated above 200°C. Below this temperature it converts to a black powder once known as pyrographitic acid. 

Fire Hazards - Flash Point Not flammable but may cause fires upon contact with combustible materials Flammable limits in Air (%) Not pertinent Fire Extinguishing Agents Flood with water or use dry powder such as graphite or powdered limestone Fire Extinguishing Agents Not To Be Used Not pertinent Special Hazard of Combustion Products Not pertinent Behavior in Fire Can increase the intensity and severity of fires containers may explode Ignition Temperature Not pertinent Electrical Hazard Not pertinent Burning Rate Not pertinent. 

A powder was emptied down a metal duct into a plant vessel. The duct was replaced by a rubber hose, as shown in Figure 15-2. The flow of powder down the hose caused a charge to collect on it. Although the hose was reinforced with metal wire and was therefore conducting, it was connected to the plant at each end by short polypropylene pipes that were nonconducting. A charge therefore accumulated on the hose, a spark occurred, the dust exploded, and a man was killed. 

Gun powders/propcl hints Muzzle blast Recoilless rifle blast Exploding sparks Exploding wires Laser sparks Contained explosions ... 

Zinc Peroxide, Zn02 The hydrated peroxide (of indefinite compn), explodes at 212°, and rnixts with A1 or Zn powders burn brilliantly Mellor 4 (1940), 530 cijj 1. m r i a OiUgWiCJS C It illdCiII5 t (l 950), 270... 

A mixture of aluminium powder and hot copper oxide exploded violently during mixing with a steel shovel on an iron plate. The frictional mixing initiated the thermite-like mixture [1]. Such mixtures are now used in electro-explosive devices [2], Two cases of violent explosions after adding scrap copper to molten aluminium are discussed. In both cases, when some undissolved copper with adhering aluminium and oxide dross was removed from the furnace, the explosions occurred outside the melting furnace [3],... 

Heating aluminium powder with carbon tetrachloride, chloromethane or carbon tetrachloride-chloroform mixtures in closed systems to 152°C may cause an explosion, particularly if traces of aluminium chloride are present [1], A mixture of carbon tetrachloride and aluminium powder exploded dining ball-milling [2], and it was later shown that heavy impact would detonate the mixture [3], Mixtures with fluorotrichloroethane and with trichlorotrifluoroethane will flash or spark on heavy impact [4], A virtually unvented aluminium tank containing a 4 1 2 mixture of o-dichlorobenzene, 1,2-dichloroethane and 1,2-dichloropropane exploded violently 7 days after filling. This was attributed to formation of aluminium chloride which catalysed further accelerating attack on the aluminium tank [5], An analysis of the likely course of the Friedel-Crafts reaction and calculation of the likely heat release (29.1 kJ/mol) has been published [26],... 

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