Compressed gases poison

Compressed gases Poisonous materials (solid, liquid and gaseous) Etiologic agents Radioactive materials (solid, liquid and gaseous)... 

Compressed gases poisonous Store in cool, dry area, away from flammable gases and liquids. Securely strap or chain cylinders to prevent falling over. Carbon monoxide, hydrogen sulphide Flammable and/or oxidizing gases... 

The Transportation Safety Act defines several classes of hazardous materials. Classes include explosives, radioactive material, flammable liquids or solids, combustible liquids or solids, oxidizing or corrosive materials, compressed gases, poisons, etiologic agents (hazardous biological materials), irritating materials, and other regulated materials (ORM). The act excludes firearms and ammunition. Other chapters in this book discuss hazards associated with some of these materials. 

Compressed gas —poisonous by inhalation Any material which has a boiling point of 68°F (20" C) or less at 14.7 psia (101.3 kPa, abs), is known to be so toxic to humans as to pose a hazard to health during transportation and in the absence of adequate data on human toxicity, is presumed to be toxic to humans because when tested in laboratory animals it has an LC50 not more than 5000 ml/m. ... 

Molybdenum hexafluoride is classified as a corrosive and poison gas. It is stored and shipped in steel, stainless steel, or Monel cylinders approved by DOT. Electronic and semiconductor industries prefer the cylinders equipped with valves which have Compressed Gas Association (CGA) 330 outlets. 

Division 2.2 Non-flammable, non-poisonous compressed gas Division 2.3 Gas poisonous by inhalation Division 2.4 Corrosive gas Class 3 Flammable liquid and Combustible liquid... 

Some bromine compounds are covered specifically under Hazardous Materials Regulations. Other compounds may usually be shipped under the classification of chemicals, not otherwise indexed by name, without special requirements unless from their nature they would fall under a category such as combustible liquid, compressed gas, corrosive liquid (or solid), disinfectant liquid (or solid), dmg, dye intermediate (liquid), fire extinguisher, flammable gas (liquid or solid), insecticide, medicine, oxidizer or oxidizing material, poisonous liquid (gas or solid), solvent, or tear gas. Specific provisions apply to each of these categories and appropriate packaging and labeling are required. 

Nonflammable, nonpoisonous compressed gas Gas poisonous by inhalation Corrosive gas (Canadian)... 

Field Safety. The objective of well stimulation is to use highly pressurized fluids to improve the productivity of petroleum reservoirs. This objective will not be achieved if the productivity is improved at the expense of the workers or equipment safety. The well stimulation sector of the petroleum industry is a hazardous sector that not only involves the use of highly pressurized fluids, but also includes fluids that may be flammable or corrosive or contain radioactive tracers. Foams that use compressed gas may be hazardous if the gas is allowed to expand quickly. Reservoir fluids also pose a danger to field personnel and equipment, because the fluids are generally flammable, combustible, or extremely poisonous, as is the case with H2S. 

There are some foolers in the nonflanunable compressed gas subclass. Anhydrous ammonia, for example, is regulated by the DOT as a nonflammable compressed gas. The United States is the only country in the world that placards anhydrous ammonia in this manner. Such placarding of anhydrous ammonia as a nonflammable gas is a result of lobbying efforts by the agricultural fertilizer industry. In most other parts of the world, anhydrous ammonia is placarded as a poison gas, not to mention... 

There are two types of warfare ordnance that we search for on a range site—chemical and high-explosive—and sometimes these are combined. Most chemical warfare material (CWM) exists in the form of a liquid that vaporizes at normal temperature. In the manufacture of poison gas and loading shells, the gas is refrigerated to a liquid, much Uke how alcohol vapor is cooled down to a liquid when making moonshine in a still. The liquid is then poured into drums, bottles, jugs, barrels, or shells. (One exception to the liquid CWM is chlorine or arsine, which, when filled into shells, exists as a compressed gas.)... 

Liquids, other than those classified as flammable, corrosive, or toxic, charged with nitrogen, carbon dioxide, or air Non-flammable gas, n.o.s. Non-liquefied gas Non-liquefied hydrocarbon gas Poisonous gases, n.o.s. Rare gases Rare gases, mixture, compressed, 2.2 Receptacles, small, containing gas without a release device, non-refillable,2.1,2.2, 2.3, 5.1, 8... 

Offering a limited quantity of a compressed gas in a metal container intended to expel a non-poisonous material, while failing to subject the filled container to a hot water bath, as required. 173.306(a)(3)(v) 5,000. 

Hydrogen chloride, refrigerated liquid TC Classification 2.3, 8 TC Label POISON GAS, CORROSIVE UN Number UN 1050 (for compressed gas)... 

Compressed gas containers must never be dropped, slid, rolled, or allowed to come in contact with sharp objects. They must not be exposed to fire or flames from welding torches. Flammable gases must be stored in properly labeled secured areas away from possible ignition sources, and kept separate from oxidizing gases. Toxic or poisonous gases must be stored in a properly labeled secured area and protected from unauthorized... 

Transport Canada Hazard Classification Numbers are 2.1, flammable compressed gas 2.2, nonflammable compressed gas 2.3, corrosive and 2.4, poisonous. The products in Table 1 are classified as 2.2 nonflammable compressed gas except for fluorocarbon 142b and fluorocarbon 152a, classified as 2.1 flammable compressed gas. 

Labeling requirements are more strict with international shipments of compressed gas mixtures from the United States, as many of them move by sea or air. Since the vessels used in both of these modes of transportation are difficult to evacuate quickly in the event of an emergency, many gases and gas mixtures may have to be classified as poisons that would not be classified as such for domestic land transportation. 

All DOT compressed gas cylinders use safety relief devices except those containing class A poison gases. In this case, the risk of exposure to the gas fumes is considered more hazardous than the chance of a cylinder failure. Gases that do not have pressure relief devices are usually allowed less maximum cylinder contents or use higher safety factor cylinders. 

Since PEGs contain no sulfur, they are also used as lubricants for gas compressors in all sectors of the chemical industry where sulfur compounds can cause catalyst poisoning. Water-soluble grades can be readily removed from a compressed gas by scrubbing with water. 

The operation of a large synthetic ammonia plant based on natural gas involves a delicately balanced sequence of reactions. The gas is first desulfurized to remove compounds which will poison the metal catalysts, then compressed to 30 atm and reacted with steam over a nickel catalyst at 750°C in the primary steam reformer to produce H2 and oxides of carbon ... 

Remaining trace quantities of CO (which would poison the iron catalyst during ammonia synthesis) are converted back to CH4 by passing the damp gas from the scmbbers over a Ni methanation catalyst at 325° CO -t- 3H2, CRt -t- H2O. This reaction is the reverse of that occurring in the primary steam reformer. The synthesis gas now emerging has the approximate composition H2 74.3%, N2 24.7%, CH4 0.8%, Ar 0.3%, CO 1 -2ppm. It is compressed in three stages from 25 atm to 200 atm and then passed over a promoted iron catalyst at 380-450°C ... 

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