Carbon ethane explosions

At elevated temperatures, the hydride reduces carbon dioxide or sodium hydrogen-carbonate to methane and ethane. The latter are probably the explosive reaction products produced when carbon dioxide extinguishers are used on LAH fires. 

Interaction of chlorine with methane is explosive at ambient temperature over yellow mercury oxide [1], and mixtures containing above 20 vol% of chlorine are explosive [2], Mixtures of acetylene and chlorine may explode on initiation by sunlight, other UV source, or high temperatures, sometimes very violently [3], Mixtures with ethylene explode on initiation by sunlight, etc., or over mercury, mercury oxide or silver oxide at ambient temperature, or over lead oxide at 100°C [1,4], Interaction with ethane over activated carbon at 350°C has caused explosions, but added carbon dioxide reduces the risk [5], Accidental introduction of gasoline into a cylinder of liquid chlorine caused a slow exothermic reaction which accelerated to detonation. This effect was verified [6], Injection of liquid chlorine into a naphtha-sodium hydroxide mixture (to generate hypochlorite in situ) caused a violent explosion. Several other incidents involving violent reactions of saturated hydrocarbons with chlorine were noted [7],... 

It would seem worth while, therefore to restudy the explosion limits of methane-oxygen and ethane-oxygen and also to study the effects of these hydrocarbons on the carbon monoxide-oxygen limits, with a view toward establishing whether these systems are connected in any way. In any case, valuable clues to the mechanisms of combustion of hydrocarbons can probably be obtained. 

Dichloroacetylene is rather endothermic (ALtf (g) +149.4 kJ/mol, 1.57 kJ/g) and a heat-sensitive explosive gas which ignites in contact with air. However, its azeotrope with diethyl ether (55.4% dichloroacetylene) is not explosive and is stable to air [ 1 ] [2]. It is formed on catalysed contact between acetylene and chlorine, or sodium hypochlorite at low temperature or by the action of alkali upon polychloro-ethane and -ethylene derivatives, notably trichloroethylene [3]. A safe synthesis has been described [4], Ignition of a 58 mol% solution in ether on exposure to air of high humidity, and violent explosion of a cone, solution in carbon tetrachloride shortly after exposure to air have been reported. Stirring the ethereal solution with tap water... 

DOT CLASSIFICATION Forbidden SAFETY PROFILE Moderately toxic by inhalation. Experimental reproductive effects. Mutation data reported. An eye irritant. A powerful explosive sensitive to spark, impact, sunlight, or heating rapidly to 100°C. A powerful oxidizer. Concentrations of greater than 10% in air are explosive. Explodes on mbting with carbon monoxide, hydrocarbons (e.g., butadiene, ethane. 

A statistical yearbook of the Furnish industries 16) includes general statistics for the various branches of industry (value of output, number of workers, wages, and motive power), and detailed tables of output and raw material consumption by the different industries. Chemicals for which output figures are given include paints, varnishes, and lacquers, superphosphate, turpentine, explosives, chlorine, caustic soda (solid and solution), hydrochloric acid,. phosphates, trichlorethylene, chlorophenolates, calcium hypochlorite, carbon tetrachloride, calcium carbide, potassium chlorate, carbon dioxide (hquid), sulfuric acid, water glaiss, metasilicate, plastics and synthetic resins, dichloro-ethane, and chloral. For lacquers and varnishes, and plastics and synthetic resins, data are given for individual products. 

By-products. The presence in the products of small quantities of compounds which would arise from combination of free radical intermediates can provide evidence for a free radical process. For example, the explosive reaction of methane with fluorine gives mainly hydrogen fluoride and a mixture of mono-, di-, tri- and tetrafluoromethanes, but small quantities of fluorinated ethanes, including C2F6, are also produced. These two-carbon products cannot be readily explained on the basis of possible molecular reactions (see reaction 6.16), but would arise naturally as combination products of the fluorinated methyl radicals produced in a radical chain reaction sequence (reaction 6.17). 

ETHANE HEXACHLORIDE (67-72-1) CjClj Noncombustible solid. Contact with aluminum, cadmium, mercury, hot iron, alkalis, alkali metals forms chloroacetylene gas which is spontaneously explosive in air. Rapidly elevated temperatures may cause ignition or explosion. Liquid attacks some plastics, rubber, and coatings. Decomposes above 367°F/186°C, releasing carbon monoxide, carbon dioxide, hydrogen chloride and phosgene. On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or COj extinguishers. A known animal carcinogen. 

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