Mild explosions

There is no satisfactory chemical way of distinguishing betn een ethane and methane, both of which burn with an almost non-luminous flame this fact however is quite unimportant at this stage of the investigation. Hydrogen also burns with a non-luminous flame and w hen the open end of a test-tube full of the gas is placed in a Bunsen flame, a mild explosion with a very characteristic report takes place. 

After three months of operation mild explosion vent panel lifted. 

After three months c f operation mild explosion vent panel lifted. Three weeks later another explosion roof blown off tank. 

H. Dinitronaphtho[l,2 cjfuroxan is also reported to form a mildly explosive salt. An anilide of 4,6-dinitrobenzofuroxan, of uncertain structure, is also known.Naphtho[I,2-c]furoxan does not form an... 

Addition of sodium hydroxide solution during work-up of a reaction mixture of oxime and diborane in THF is very exothermic, a mild explosion being noted on one occasion. 

On storage, solutions of iodine isocyanate gradually deposit a touch-sensitive, mildly explosive solid (possibly cyanogen peroxide). 

The red complex is more dangerously explosive than the ketenide itself, now described as mildly explosive in the dry state when heated strongly or struck [1]. It was previously formulated as a 2 1 complex [2],... 

The major product of reaction of the nitrile with anhydrous hydrazine in THF at —196°, followed by slow warming to 25°C for 2 h, is 2-difluoroamino-2,2-difluoro-l-iminoethylhydrazine, F2NCF2C( NH)NHNH2, which is stable only in solution. Evaporation of solvent led on each occasion to mild explosions, caused by decomposition of the product with considerable gas evolution, for which a mechanism is suggested. 

Gentle heating of a 1 1 chloroform solution of the stannane led to a mild explosion. 

Addition of a drop of aniline to 1 g of the peroxide leads to mildly explosive decomposition after a short delay. 

Below 240°C intimate mixtures with sugar charcoal undergo exothermic decomposition, while mild explosions occur above 240° C. 

Passage of chlorine through cold recovered methanol (but not fresh methanol) led to a mild explosion and ignition, formation of methyl hypochlorite apparently being catalysed by an impurity. 

The anhydrous salt was stable to 300°C or to impact of a steel hammer, but a mild explosion occurred when a grease-containing sample was disturbed with a metal spatula. 

A waste plating solution (containing 22% sulfuric acid and 40% w/v of chromium) was being sucked into an acid-disposal tanker. When 500 1 had been transferred, a mild explosion in the tanker blew back through the transfer pump and hose. The oxidisable component in the tanker was not identified. 

Contact with red-hot carbon causes a mild explosion. 

During preparation of chlorine by addition of the cone, acid to solid permanganate, a sharp explosion occurred on one occasion [1], Sulfuric acid was not used in error, nor was tube blockage involved [2], A similar incident was reported later [3], It appears remotely possible that permanganate may be able to oxidise chlorine to chlorine oxide [4], which as a dilute mixture with chlorine would be mildly explosive in the gas phase. 

Mechanical impact on a road surface on to which liquid oxygen had leaked caused a violent explosion [1], Anecdotal evidence that there have been several like incidents is given [2], Mixtures of asphalt and liquid oxygen were shown to be impact-sensitive on the small scale, but on the larger scale a detonator was necessary to initiate mild explosion of liquid oxygen on a layer of asphalt [3], Oil,... 

Evaporation of an ethereal extract of sulfur caused an explosion of great violence. Experiment showed that evaporation of wet, peroxidised ether gave a mildly explosive residue, which became violently explosive on addition of sulfur. 

Nickel and selenium interact with incandescence on gentle heating [1], as do also sodium and potassium, the latter mildly explosively [2], Uranium [3] and zinc [4] also incandesce when their mixtures with selenium are heated, and platinum sponge incandesces vividly [5], The particle size of cadmium and selenium must be below a critical size to prevent explosions during synthesis of cadmium selenide by heating the elements together. Similar considerations also apply to interaction of cadmium or zinc with sulfur, selenium or tellurium [6], Interaction of powdered tin and selenium at 350° C is extremely exothermic [7],... 

The synthesis of dialkylamino derivatives of tin (IV)1 can be readily accomplished by the reaction of the lithium salt of the amine and the corresponding chlorostannane. J An extensive series of representative aminostannanes of formula R Sn-(NR/2) 4—n where n — 0 to 3 has been recently synthesized.3 These compounds are very moisture-sensitive. Caution should he observed in the handling of these dialkylaminostannanes because of the recent report of mild explosions during the distillation of bis dialkylamino) stannaries where temperatures were allowed to reach 200°, and during mild heating of chloroform solutions ... 

Solutions of peroxide were prepared by oxidizing to the required extent, quenching the oxidation by cooling, and adding an excess of an inert diluent such as toluene. More than half the toluene was then pumped off while the oxidate was kept at — 20°C. After this procedure had been repeated twice, solutions of peroxide in toluene could be prepared in which the residual chloroprene concentration was about 0.5% (w./w.) of the peroxide. Complete removal of solvent gave faintly yellow viscous peroxidic material which was mildly explosive at room temperature. 

It is a very mild explosive practically insensitive to impact... 

It is a stable and practically nonhygro-scopic mild explosive of satisfactory thermal stability (Refs 2 3)... 

HN. QH(NOa),. OH, yel ndls (from AcOH), mp-178-9°(dec) sol in AcOH and hot ale diff sol in hot w. Can be prepd by treating 3-nitro-4-acetamidophenol with fuming nitric acid (Ref 2) or by other methods (Ref 1,4 5). Forms numerous salts of which the cobalf, nickel, and silver salts are mild explosives (Ref 3)... 

C5 HaNs 0 Ag, is a mild explosive Refs 1)Beil— not found 2)P-Stolle,... 

Grysts(from ethyl acetate), mp 152°. Can be prepd from aminoguanidine nitrate and propionic acid. Its nitrate, C4H4N4-HNOj, mw 175-15, N 39.99%, crystsffrom et acet + alc), mp 167°, is a mild explosive which is sol in hot w and ale... 

PA A is a mild explosive and its expl props were examined by WillfRef 4). Its QT... 

N 11.91% brownish microscopic needles mp ca 140° when carefully heated. It is a mild explosive, sol in ale, nearly insol in w, eth, chlf or benz. Was prepd by treating 1 part of powdered aurin with 4 ps nitric acid (d 1.51) in the cold. The positions of the nitro groups are not given... 

Wood, paper similar.materials decomp the acid at once, very often with spontaneous combustion or even a mild explosion. 

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