Disulfur dioxide

Disulfur dioxide, S202, is probably formed as an intermediate when SO disproportionates to S20 and S02.39 The Ir1 complex (10) has been isolated.41... 

Sulfur Monoxide Disulfur Monoxide Disulfur Dioxide Polysulfur Oxides... 

Within the sulfur sub-group, there are two main types of oxides, the dioxides X 02 (X = S, Se, Te, Po) and the trioxides X Os (X = S, Se, Te). In addition, sulfur also forms disulfur monoxide, S2O. Transient XO species are known in the gaseous phase for S, Se, and Te. Polonium forms a black monoxide PoO. 

The effect of initiators (diluted sulfuric acid, chlorine dioxide, sulfur dioxide or disulfur dichloride) on ignition of mixtures of barium, lead or potassium chlorates with sulfur was examined [1] Presence of copper ion or metal (e.g. from a sieve) may also lead to explosion of such mixtures [2], A review of hazards of sulphur/chlorate mixtures in the firework industry has been published [3],... 

Diphenylselenone, 3494 Disulfur heptaoxide, 4870 Nitrogen dioxide, 4725 Nitrogen oxide, 4724... 

The product 303 from disulfur dichloride and 2,3-dimethylbuta-l,3-diene rearranges spontaneously to the tetrahydrothiophene 304 (equation 159)150. The reaction of liquid sulfur dioxide with conjugated dienes 305 (e.g. butadiene, isoprene) results in cyclic sulfones which dissociate into their components on heating (equation 160)151 152. 

Sulfur reacts with sulfur dioxide in an electric discharge to form disulfur-oxide, S2O. 

The compound decomposes above 140°C to form sulfur dioxide, chlorine and disulfur dichloride ... 

Sulfuryl chloride alone, or in the presence of silicon dioxide or disulfur dichloride-aluminium chloride, gave the 5-chloro derivatives of 2-perhalogenomethylthiopyrroles, along with some di-substituted (3,5- and 4,5-) and tri-substituted (3,4,5-) compounds. Brominating and iodinating agents reacted similarly (85JHC281). 

A number of suboxides of sulfur have been reported, but in general their composition has not been clearly established. Polysulfur oxides of formula Ss- 10O2 are formed by reaction of hydrogen sulfide and sulfur dioxide. Also, when sulfur is burned with oxygen in very limited supply disulfur monoxide, S20 is formed. This has the structnie... 

Diphenylselenone, 3488 Disulfur heptaoxide, 4864 Nitrogen dioxide, 4720 Nitrogen oxide, 4719... 

Disulfur dinitride, 6 126 Disulfur pentoxydiehloride, 3 124 analysis of, 3 126 Dithiocarbamates, of selenium(II) and tellurium(II), 4 91 Dithionic acid, salts of, 2 167 Dithionite ion, formation of, from sulfur dioxide by sodium hydride, 5 13... 

In highly acidic and oxidizing solutions like fluorosulfuric, sulfuric, and disulfuric acids with additional oxidants like selenium dioxide, peroxydisulfuryl difluoride or SbFs, Sc4 + salts can be prepared (see equations 1-3). The products have been characterized by cryoscopic, conductometric, and spectroscopic experiments. ... 

It was suggested that the reaction of sulfur dioxide with sulfenes yields a cyclic intermediate, a 1,2,3-oxadithietane-2,3,3-trioxide that decomposes to a ketone with the loss of disulfur trioxide.An alternative scheme involves the loss of sulfur monoxide from an oxathiirane 1-oxide derived from the sulfene. The reaction of sulfur dioxide with diphenylsulfene may proceed through a 1,2,4-oxadithietane-2,2,4-trioxide.3,3-Bis(trifluoromethyl)-l,2,4-oxadithietane 2,2,4,4-tetraoxide 598 is obtained by thermolysis of 595. It decomposes to 599 on further heating, and it reacts in the presence of bis(trifluoromethyl) ketene to give a six-membered cyclic trisulfone and a thiirane sulfone. ... 

Manufacture Thionyl chloride is manufactured by reacting sulfur dioxide or sulfur trioxide with sulfur dichloride and chlorine or with disulfur dichloride and chlorine ... 

All the processes operate in the gas phase in continuously operated plants with an activated charcoal catalyst. Unreacted sulfur dioxide, or sulfur dioxide produced as a byproduct, is converted in the gas phase with chlorine to sulfuryl chloride. This is fed back into the thionyl chloride synthesis and there reacts with sulfur dichloride or disulfur dichloride and chlorine to thionyl chloride. Unreacted sulfur dichloride is reacted with sulfur in the presence of a catalyst to disulfur dichloride. Pure thionyl chloride is obtained by fractional distillation. 

Manufacture Industrially sulfuryl chloride is almost exclusively produced by reacting sulfur dioxide with chlorine on an activated charcoal catalyst in a well-cooled tubular converter. Reaction of disulfur dichloride with... 

Hexamethyldisiloxane can react with 1, 2 or 3 mol of SO3 to give the disilyl ester of sulfuric, disulfuric, or trisulfuric acid, respectively. Sulfur dioxide is a weak acceptor for the Sn—O bond and can be displaced from its adducts by the stronger isocyanate. ... 

Agent Index A045 Class Index C14 Disulfur Decafluoride No U.S. Military Designation CAS 5714-22-7 S2F10 Colorless liquid or gas with an odor of sulfur dioxide. TWA 0.025 ppm IDLH 1 ppm FC-50 LD50 — Routes Inhalation Skin Absorption (liq) Local Skin/Eye Impacts Evacuation Distances None established MW 254.1 MP -134°F BP 84°F VP 561 mmHg Vlt 740,000 ppm SG 2.08 RVD 8.8 RPr 0.008 Sol Insoluble Fl.P None IP —... 

---