Fulminates mercury fulminate

Mercury Fulminate. Mercury fulminate [628-86 ] Hg(CNO)2, slowly decomposes when stored at elevated temperature. Although... 

Fulminating gold Fulminating mercury Fulminating platinum Fulminating silver Fulminic acid Furan... 

MD Mercury azide Mercury fulminate Mercury fulminate Mercury nitride Methylene dinitramine Methyl dichloroarsine... 

According to Kaufman [52] strong y-radiation (on average 105r per hour) can decompose mercury fulminate. Mercury fulminate evolves large amounts of gas during irradiation and eventually loses its explosive properties. 

Mercury fulminate. Mercury fulminate or mercuric cyanate, 10, is a grey-white powder obtained by reacting mercuric nitrate with alcohol in nitric acid... 

Initiators. Explosives such as mercury fulminate and certain metallic azides which are extremely sensitive to mechanical shock, and are accordingly used in small quantities in detonators to initiate the explosion of larger masses of less sensitive material. 

Ereezing salt, see Sodium chloride Eulminating mercury, see Mercury fulminate... 

Explosives. Mercury, in the form of organic complexes, eg, mercury fulminate [628-86-4] has had long usage in explosives (see Explosives and propellants). In the United States all mercury for use in explosives is diverted to military uses. An explosive based on mercuric 5-nitrotetra2ole [60345-95-1] has been developed, but its use is on a small scale and in research and development only (3). 

Nitroglycerin was discovered by Ascanio Sobrero, in 1846. Its danger made it a laboratoiy curiosity until Alfred Nobel improved it along with other inventions such as the blasting cap ing mercury fulminate. 

On the other hand, for low shock-resistant expls such as Pb Azide, Mercury Fulminate or... 

Not detonated by 0.35g of Lead Azide and 0.2g of Tetryl, or by 0.5g of Mercury Fulminate 6 minutes Good... 

The primary mixt widely used by the US Army for small arms ammo in the early period of 1900 was based on Mercury Fulminate (MF) and is believed to be of Austrian origin (Ref 2), The most widely used formula is reported to have been as follows ... 

Gamer and Hailes [462] postulated a chain branching reaction in the decomposition of mercury fulminate, since the values of n( 10—20) were larger than could be considered consistent with power law equation [eqn. (2)] obedience. If the rate of nucleation is constant (0 = 1 for the generation of a new nuclei at a large number of sites, N0) and there is a constant rate of branching of existing nuclei (ftB), the nucleation law is... 

The decomposition kinetics of mercury fulminate [725] are significantly influenced by ageing, pre-irradiation and crushing these additional features of reaction facilitated interpretation of the observations and, in particular, the role of intergranular material in salt breakdown. Following a slow evolution of gas ( 0.1%) during the induction period, the accelerator process for the fresh salt obeyed the exponential law [eqn. (8)] when a < 0.35. The induction period for the aged salt was somewhat shorter and here the acceleratory process obeyed the cube law [eqn. (2), n = 3] and E = 113 kj mole-1. 

Mercury cyanide, 5, 1062 Mercury electrodes potential range aqueous solution, 1, 480 Mercury fluoride, 5. 1059 Mercury fulminate, 2, 7, 12 5, 1063 Mercury halides, 5, 1049 Mercury iodate, 5,1068 Mercury iodide, 5. 1059 Mercury ions Hgf... 

Cadmium fulminate Copper fulminate Dimethylthallium fulminate Diphenylthallium fulminate Mercury(ll) mothyinitrolate Mercury(ll) formhydroxamatc Mercury(ll) fulminate Silver fulminate Sodium fulminate Thallium fulminate... 

With polyhaloalkanes, potassium forms mixtures that detonate on impact. The potassium/carbon tetrachloride mixture is hundred and fifty to two hundred times more sensitive than mercury fulminate. A simple door slam can cause its detonation. 

Nitroglycerine and other high explosives of this type are difficult to initiate into detonation simply by the use of a flame. Mercury fulminate, discovered by Howard, is an explosive of relatively low power which can, however, always be relied on to detonate when ignited by a flame. Explosives like mercury fulminate are known as initiating explosives. 

Mercury fulminate has the formula Hg(ONC)2. It was probably discovered by Howard in 1800 and its constitution was established by Nef. The method of preparation is known as the Chandelon process and is a complex reaction studied by Wieland. Mercury is dissolved in an excess of warm nitric acid and ethyl alcohol added to the resulting solution. Considerable bubbling occurs in the strong reaction, so this is usually carried out in capacious glass balloons . At the end of the reaction the mercury fulminate remains as a dense precipitate which is filtered and washed several times. 

Mercury fulminate is a pale brownish solid, insoluble in cold water, but dissolving slightly in hot water to a solution which does not give the normal mercury reactions. In cold conditions it is stable, but at higher temperatures gradually decomposes and loses strength as an explosive. It has a density of 4-45 g ml-1 and a velocity of detonation, when compressed to a practical density of 2-5, of about 3600 m s-1. 

When used in detonators, mercury fulminate is frequently mixed with 10 or 20% of potassium chlorate. Such mixtures have a better oxygen balance and therefore give improved and more reliable initiation of other explosives. 

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