Nonflammable gases compounds

SAFETY PROFILE A poison by inhalation. A strong irritant. See also BORON COMPOUNDS and FLUORIDES. A nonflammable gas. Dangerous when heated to decomposition or upon contact with water or steam, will produce toxic and corrosive fumes of F". Incompatible with... 

EXPLOSION and FIRE CONCERNS nonflammable gas does not support combustion NFPA rating (not available) gas is heavier than air attacks many metals in presence of water reacts violently with alkali metals, alkaline earth metals (except magnesium), alkyl nitrate, and calcium oxide will polymerize unsaturated compounds very dangerous substance decomposes when heated or upon contact with water or steam alkali metals, alkaline earth metals (except magnesium), alkyl nitrate, and calcium oxide will polymerize unsaturated com-... 

EXPLOSION and FIRE CONCERNS nonflammable gas NFPA rating (none) can contain variable quantities of the low-sulfur fluorides (e.g., sulfur pentafluoride) which are highly toxic very reactive chemically, and corrosive in nature materials can hydrolyze on contact with water to yield highly toxic and very corrosive hydrogen fluoride may act as a simple asphyxiant when pure and in high concentrations incompatible with disilane may be explosive hazardous decomposition products include monosulfur fluoride, tetrasulflir fluoride, sulfuryl fluoride, sulfurous fluoride, sulfuric fluoride, decasulfur difluoride and other toxic fluoride compounds if cylinders are involved in a fire, keep cool with water spray. 

Nonflammable gas supports the combustion of many compounds, including carbon, sulfur, and phosphorus. Nitrous oxide decomposes explosively at high temperatures. It forms explosive mixtures with hydrogen, ammonia, silane, and phosphine. Reactions with hydrazine and alkali-metal hydrides produce flame. It is a strong oxidizer at elevated temperatures, at about 300°C (572°F), when its dissociation begins. 

Fluorine is a nonflammable gas that produces a flame when reacted with many substances. It is highly reactive and reacts vigorously or violently with a large number of compounds. It reacts violently with water even at low temperature, forming ozone and hydrofluoric acid ... 

Nonflammable gas. Chlorine monoxide is a highly reactive compound, exploding by itself... 

Nonflammable gas dangerously reactive. Chlorine trifluoride reacts explosively with water, forming hydrogen fluoride and chlorine. It reacts violently with most elements and common substances. Paper, cloth, wood, glass, wool, charcoal, and graphite burst into flame in contact with the liquid. The vapors, even when diluted, can set fire to organic compounds. Reactions with most... 

Nonflammable gas. Chlorine pentafluoride is a highly reactive substance. It reacts explosively with water. Paper, cloth, wood, and other organic matter would burst into flames upon contact with the liquid or vapor of chlorine pentafluoride. Vigorous to violent reaction occurs with metals. Reactions with oxides, sulfides, halides, and carbides of metals are violent. It forms explosive mixtures with hydrogen, carbon monoxide, hydrocarbon gases, ammonia, phosphine, sulfur dioxide, and hydrogen sulfide. It reacts violently with sulfur, phosphorus, silicon compounds, charcoal, and mineral acids. 

Phosgene is a colorless nonflammable gas that has the odor of freshly cut hay. It is a manufactured chemical, but small amounts occur naturally from the break down of chlorinated compounds. 

Sulfur dioxide is a colorless, nonflammable gas with a strong suffocating odor. It is formed by burning sulfur directly or by burning sulfur-containing compounds. Sulfur dioxide is emitted during fossil-fuel combustion, especially coal, and by industry in the extraction of iron and copper from their ores. Sulfur is also emitted naturally during volcanic eruptions. 

The unique properties of DGs, including tuneable solvation power and excellent mass transfer properties, are advantages that are beneficial in a wide range of processes applied to pharmaceutical compounds. Dense gas technology commonly utilizes carbon dioxide, which is nonflammable, nontoxic, and inert, and has moderate critical conditions. The properties of carbon dioxide are particularly suited to the processing of labile compoimds such as many active pharmaceuticals. 

Since its introduction in the 1960s, SFC has experienced several ups and downs in its development. Either a gas or a Uquid above its critical temperature and pressure is used as the mobile phase for SFC. In most cases, COj is used because of its favorable critical parameters (i.e., a critical temperature of 31 °C and a critical pressure of 7.3 MPa). Moreover, CO2 is cheap, nontoxic, and nonflammable. A high-pressure pump delivers the mobile phase through either a packed (pSFC) or capillary column (cSFC) to the detector. The mobile phase is maintained under supercritical or subcritical conditions via an electronic controlled variable restrictor that is positioned after detection (pSFC) or via a fixed restrictor positioned before a gas-phase detector (cSFC). The retention characteristics of the analytes are influenced by the properties of the stationary phase and by the polarity, selectivity, and density of the CO2 mobile phase. The density is controlled by variation of the temperature and pressure of the supercritical medium. Furthermore, the elution of very polar compounds under high densities can be achieved with a precolumn addition of polar modifiers such as methanol. Nowadays, pSFC formats use the same injector and column configurations as LC methods. Consequently, pSFC formats are considered to be more useful for routine operation than cSFC. The most remarkable... 

A few hydrocarbon derivatives from the alkyl-halide family are 2.2 nonflammable compressed gases. This illustrates the wide range of hazards of the alkyl halides as a group. Some are flammable, some are toxic, and some are nonflammable and nontoxic. They can still act as asphyxiants and displace the oxygen in the air. It is important to remember that the primary hazard of the alkyl halides is toxicity. Some of them are also flammable therefore, all must be assumed to be toxic and flammable until the individual chemical is researched and the actual hazards are determined. It is interesting to note that while the DOT lists tetrafluoromethane as a nonflammable, nonpoisonous gas, the Condensed Chemical Dictionary lists the compound as toxic by inhalation. The NIOSH Pocket Guide to Chemical Hazards does not list the compound. The best source of information about this compound and others may be the MSDS (material safety data sheet). Examples of nonflammable Class 2.2 alkyl halides are tetrafluoromethane and trifluoromethane. 

Numerous inhalation anesthetics are not ethers at all. Nitrous oxide, for example, is a simple inorganic compound with the formula N2O. Also known as laughing gas, it is used as a general anesthetic by some dentists because its effects wear off quickly. Halothane, currently a popular general anesthetic, is a simple halogen derivative of ethane. It is nonflammable, does not cause nausea or similar upsets, and its effects wear off quickly ... 

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