Sulfur hexafluoride, and

It explodes on contact with carbon tetrachloride or sulfur hexafluoride, and contact with chloroform causes incandescence. Disilane ignites spontaneously in air, even when pure, and ingress of air or oxygen into a volume of disilane causes explosion. 

Sulfur trioxide gas reacts with gaseous hydrogen fluoride to produce gaseous sulfur hexafluoride and water vapour. The value of Kc is 6.3 X 10 3. 

In humans, inhalation of 80% sulfur hexafluoride and 20% oxygen for 5 minutes produced peripheral tingling and a mild excitement stage, with some altered hearing in most subjects. According to the ACGIH, the chief hazard, as with other inert gases, would be asphyxiation as a result of the displacement of air by this heavy gas. ... 

Among potentially interesting solvents for enzymatic catalysis, carbon dioxide is the most widely nsed snpercritical fluid. However, there is a growing interest in using other supercritical fluids (e.g., ethylene, fluoroform, ethane, sulfur hexafluoride, and near-critical propane) (Kamat et al., 1995b). 

A. Dinitrogen monoxide, sulfur hexafluoride, and dichlorine octoxide. Notice that none of these compounds contain any metals, which means that they re most certainly molecular compounds. The first compound contains two nitrogen atoms and one oxygen atom, so it s called dinitrogen monoxide. The second compound contains one sulfur and six fluorines. Because sulfur is the first named element, you don t need to include a mono- prefix. You simply name the compound sulfur hexafluoride (rather than monosulfur hexafluoride ). Using the same methods, the third compound is named dichlorine octoxide. 

Sulfur tetrafluoride is thermally stable up to 600 °C. Within the temperature range 600-1000 C, less than 1 % undergoes disproportionation to sulfur hexafluoride and sulfur.24 Most of the common construction metals, such as copper, nickel and steel, are resistant to sulfur tetrafluoride. Mercury also does not react with sulfur tetrafluoride.3 The recommended construction material for work with sulfur tetrafluoride is Hastelloy or stainless steel and, at low pressure,... 

The hypofluorite, fluorine fluorosulfate (12), reacts explosively with sulfur tetrafluoride at liquid nitrogen temperature to afford a low yield of pentafluorosulfur fluorosulfate (13), together with sulfuryl fluoride, sulfur hexafluoride and oxygen.217... 

The class was comprised of carbon dioxide with aromatics ketones and carbon tetrachloride as solutes and aliphatics (propane, hexane, dimethyl butane), sulfur hexafluoride, and chlorotrifluoromethane as solvents with aromatics as solutes. In addition, sulfur hexafluoride combined with carbon tetrachloride, and chlorotrifluoromethane combined with 2-propanone were included in that class. In all cases, X = (1 + Vc /Vc r )V l + Ma/Mb) was in the range of 1 to 10. 

Apart from sulfur hexafluoride (and sulfuryl halides), the oxidation state is maintained for species SF5R and SF4R2. All of these compounds are octahedral and the latter species may adopt cis or trans configurations. 

A. TMT. Temperature of reaction vessel, 195° to 300° C. Borosilicate glass reaction vessel, the surface-volume ratio of which could be altered by a factor of up to 7.5 by packing with either borosilicate glass or silica glass wool. Reaction time, 0.7 to 3.0 seconds. Total pressure in reaction vessel 4 to 10 mm. Carrier gases, nitrogen, carbon dioxide, sulfur hexafluoride, and cai bon dioxide-nitric oxide. 

The fluorine thereby obtained is directly processed further (to uranium hexafluoride, sulfur hexafluoride) or liquefied (b.p. -188°C) and filled into pressure cylinders. Pressure cylinders with mixtures of fluorine and nitrogen, with 10 or 20% by volume of fluorine, are widely marketed (utilized, for example, for the surface fluorination of vehicle fuel tanks). The worldwide fluorine capacity is estimated to be ca. 7.5 10 t/a, of which 60% is in the USA, 25% in Europe and 15% in Japan. Ca. 75% of the fluorine manufactured is utilized in the manufacture of uranium hexafluoride, 22.5% in the manufacture of sulfur hexafluoride and 2.5% in the manufacture of tetrafluoromethane. In 1986 ca. 100 t of fluorine was utilized in the manufacture of fluorographite (high conductivity) for use in batteries. 

Although, supercritical carbon dioxide has the advantage of being nontoxic and abundant, it is practically immiscible with water. Therefore, supercritical fluids used as the reaction medium in enzyme-catalyzed reactions include fluoroform, sulfur hexafluoride, and ethane, while lipases are the enzymes utilized in such reactions. ... 

Accuracy of the diaphragm gas meter is verified against either a wet test meter or a Sierra instruments 616 E-36 hot wire aneomemeter. On a yearly basis, a third party laboratory verifies chamber operation and air exchange rate measurements. The carbon monoxide decay is the method used to verify air exchange rate measurements(13). However, other researchers have reported using formaldehyde, propane, sulfur hexafluoride, and carbon dioxide as... 

The mean total lipids for the samples in Table VI were 384 mg/100 mL for human blood and 588 mg/100 mL for dog blood. Least-squares fits of sulfur hexafluoride and halothane solubilities vs. total blood lipids content for all blood samples gave correlation coefficients of R = 0.82 for halothane and 0.70 for SF6. For the cholesterol fraction, the R s were 0.90 and 0.76, respectively. For the phospholipid component, the R s were 0.63 and 0.62, respectively, while for triglycerides and fatty acids, R was less than 0.40 for both gases. 

Explain the difference between sulfur hexafluoride and disulfur tetrafluoride. 

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