Poison Toxic Gases

POISON (TOXIC) GASES Poison (Toxic) Gas Hazards 

Caution Poison gases such as arsine, di-borane, methyl bromide, nitric oxide, nitrogen dioxide, phosgene, and phosphine pose serious potential hazards to personnel and therefore require special handling. These products must never be handled except by specially trained personnel who are fully aware of the potential hazards involved and who are equipped with such special personal safety apparatus as is necessary in the handling of these products. 

Personnel handling and using highly toxic or poison gases must have available for im- 

Highly toxic or poison gases can be filled and utilized only in forced ventilated areas, or, preferably, in hoods with forced ventilation, or outdoors. Such gases, when emitted from equipment, must be discharged into appropriate scrubbing equipment which will remove the toxic gases from the effluent gas stream. 

Before using a highly toxic or poison gas, the user must read all the information on the container label and the Material Safety Data Sheet (MSDS) associated with the product. All personnel working in the immediate area must be instructed as to the toxicity of the gas or gases being used, the appropriate methods of protection against harmful exposure, and first aid treatment in case of exposure. 

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Gas, Noxious. Any poisonous (toxic) gas or a gas with strong unpleasant odor Ref Hackh s Diet (1944), 368-R... 

CLASS A POISON (usa) A toxic gas/liquid of such a nature that a very small amount of the gas, or vapour of the liquid, in air is dangerous to life. 

Chemical Reactivity - Reactivity with Water When sodium cyanide dissolves in water, a mild reaction occurs and some poisonous hydrogen cyanide gas is liberated. The gas is not generally a concern unless it is generated in an enclosed space. If the water is acidic, then large amounts of the toxic gas forms... 

Giftgas, n. poison gas, toxic gas. -krieg, m. poison-gas warfare. 

Interaction of the two compounds led to the evolution of a toxic gas thought to be chlorine [1], It is the far more poisonous phosgene, arising from the known base-catalysed disproportionation of the carbonate to oxalyl chloride and phosgene, which occurs even at ambient temperature [2], (The editor knows that amides, too, catalyse this rearrangement and suspects that Lewis acids will also)... 

Carbon monoxide is a colorless, odorless, tasteless, flammable, toxic gas. It was first identified by the Spanish alchemist Arnold of Villanova (1235-1313), who noted the production of a poisonous gas when wood was burned. The formal discovery of carbon monoxide is credited to the French chemist Joseph Marie Francois de Lassone (1717-1788) and the British chemist Joseph Priestley (1733-1804). The former prepared carbon monoxide by heating carbon in the presence of zinc, and for a time the compound was incorrectly identified as hydrogen. William Cumberland Cruikshank (1745—1800) correctly determined that carbon monoxide was an oxide of carbon in 1800. 

Commercially available Karl Fischer reagent is stabilized and can be obtained free of pyridine, which is toxic. It can also be prepared in the laboratory however, this requires the use ofS02, a poisonous, liquified gas. 

POISONOUS, SERIOUS RISK OF POISONING BY SWALLOWING OR SKIN CONTACT, CONTACT WITH ACIDS LIBERATES A TOXIC GAS... 

The most common cause of accidental poisoning with carbon monoxide is a fire, stove, or boiler that is inadequately ventilated. When it is lit, it produces the toxic gas which accumulates in the house, especially in modern homes which are often double-glazed and have little ventilation, and especially in the winter. One reason for poor ventilation may be birds nesting in the chimney, which decreases the availability of air. In a recent case a family lit a fire in a rented holiday cottage, but unbeknown to them the chimney had become blocked with a bird s nest, and all of them died of carbon monoxide poisoning. 

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