Sulfor

Missouri Botanical Garden. (In Cooperation with Union Electric Company. St. Louis) Sulfor in the Enviromnent. St. Louis Missouri Botanical Garden. 1975. 

Schuck, E. A., and G. J. Doyle. Photooxidation of Hydrocarbons in Mixtures Containing Oxides of Nitrogen and Sulfor Dioxide. Report No. 29. San Marino, Calif. Air Pollution Foundation, 1959. 126 pp. 

Sulfor oxidizing bacteria oxidize sulfide and sulfite to sulfate. The decrease of oxygen [94,95] as well as the alteration of pH [96] can be used as indicators of these reactions. With a Thiobacillus thioparus-containing sensor, a detected limit of 4 pmol/1 sulfite is reached [94]. The detection limit of a sensor with Thiobacillus thiooxydans for sulfide is 0.02 mmol/1 only [95]. 

One of the chief difficulties with the solvent system concept is that in the absence of data, one is tempted to push it further than can be justified. For example, the reaction of thionyl halides with sulfites in liquid sulfor dioxide might be supposed to occur as follows, assuming that autoionization occurs ... 

The reaction of sulfor tnoxide and benzene in an inert solvent is very fast at low temperatures. Yields of 90% benzene sulfonic acid can be expected. Increased yields of about 95% can be realized when the solvent is sulfur dioxide. 

Time-resolved fluorescence was used to detect rhodamine 6G (R6G), sulfor-hodamine 101 (SR101), and rhodamine B (RB). A Ti-sapphire laser (800 nm, 50 fs) was used, but the excitation wavelength has been converted to 400 nm (for R6G) or 532 nm (for SR 101 or RB) by an optical parametric amplifier or by second harmonic generation [676], In another report, fluorescence burst detection was used for detection of single chromophore molecules [677]. 

Henderson, R.A. (1995) Mechanistic studies on iron-sulfor-based clusters, in Tichonovich, I. A., Provorov, N. A., Romanov, V. I., and Newton, W. E. (eds.), Nitrogen Fixation Fundamentals and Applications, Kluwer Academic Publishers, Dodrecht, pp. 117-122. 

Sulfon acid blue R, 218 Sulforation general, 6, 82 vessels, 101, 105 Sulfone reagent, 185, 211, 243 Sulfones, 85 Sulfonic adds rearrangement, 82 separation, 31 l-p-Sulfophenyl-3-methyl-5-pyrazolone, 129 Sulfoxylate, 80 Sulfur black T, 102, 337 Sulfur fusions, 332 Sulfuric add, heat capadty, 70 Sulfuryl chloride, 67, 145 Sun yellow G, 296 Superheater, 142... 

Several types of sulfenyl chlorides are known. Sulfur monochloride and dichloride can add to dienes forming sulfor bridges. - The most commonly used sulfenyl halides are benzenesulfenyl dilorides and methanesulfenyl chloride. Other sulfenyl halides, such as acetylthiosulfenyl chloride and thiocyanogen chloride, have been added to alkenes, but few subsequent transformations have been carried out with those intermediates. 8... 

Synonyms. Sulfaphenazole Sulphaphenylpyrazol. Proprietary Names. Fenazolo Orisul Sulforal. 

Sulforal, 992 Sulforidazine, 980 (metabolite), 738, 1020 Sulformethoxine, 978 Sulforthomidine, 978 Sulfotrimin, 988 Sulfuno, 991 Sulginum, 986 Sulindac, 981 Sulindac sulphide, 981 Sulindac sulphone, 981 Sulla, 989 Sulmycin, 637 Sulpha..., see also under Sulphacalyre, 981 Sulphacarbamide, 995 Sulphacetamide, 981 Sulphacetamide sodium, 981 Sulphacetamide, soluble, 981 Sulphachlorpyridazine, 982 Sulphadiazine, 982 Sulphadiazine sodium, 983 Sulphadiazine, soluble, 983 Sulphadimethoxine, 983 Sulphadimethyloxazole, 991 Sulphadimethylpyrimidine, 984... 

One of the few substances found to behave as an acid m sulforic acid is disulltiric (pyrosulfuric) acid, it is formed from sulfor trioxide and sulfunc add ... 

Consider the battery in Fig. 7.18. The sodium beta alumina barrier allows sodium ions fbrmed at the anode to Row across to the sulfor compartment, where, together with the reduction products of the sulfur. U forms a solution of sodium trisulhde in the sulfur. The latter is held at 300 C to keep it molten. The sodium beta alumina also acts like an electronic insulator to prevent short circuits, and it is inert toward both sodium and sulfur. The reaction is reversible. At the present state of developmenl. when compared with lead storage cells, batteries of this sort develop twice the power on a volume basis or four times the power on a wei I basis. 

Pujo Boileau (Ref 1) studied the action of nitrogen peroxide on epoxides and found that the reaction did not yield nitro derivs, as expected, hut nitrate-nitrite esters metha-nolysis converted the esters to alcohol nitrates. Nitration with sulforiC-oitrie acids (50/50) yielded dinitrate derivs and with... 

Thost BM., Melvin L.S., Sulfor Ylides, AcadPress, New York, 1975. 

As oleums used in manuf of expls freeze at moderate winter temps, they usually contain 4-6% nitric acid which acts as an antifreeze. Outline of analysis of such oleums will be given after brief description of acidity detn in mixed nitric-sulforic acid... 

Chemisorption uptakes of Hj at 298-303 K for alumina supported nickel catalysts were measured. The corresponding nickel surface areas were calculated and subsequently sulfur contents at saturation were determined. The average values were of the same magnitude as the amounts of sulfur that were not desorbed from the catalysts during the TPH treatments. Hence, it may be concluded that the saturation layer of sulfor remains on the catalyst even after regeneration in hydrogen atmosphere. 

In 1886 Flans Landolt (1831-1910) published a pioneering publication in the Berichte der deutschen chemischen Gesellschaft entitled Ueher die Zeitdauer der Reaction zwischen Jodsdure und schwefliger Sdure ( On the duration of the reaction between iodic acid and sulforous acid ) ... 

On the basis of the mechanism described on page 871, the base-pairing interaction between the anticodon on the incoming tRNA and the codon in the A site on mRNA determines which amino acid is added to the polypeptide chain. Does the amino acid attached to the tRNA play any role in this process This question was answered in the following way. First, cysteine was attached to its cognate tRNA. The attached cysteine unit was then converted into alanine by removing the sulfor atom from the side chain in cysteine in a reaction catalyzed by Raney nickel the reaction removed... 

Uc tented crystallizations of the oxyeldoriiies will separate iron mill zirconium. ( <) Vaporization of lo t , at 2tHf ((f) Phenyl hydrazine a nil sulforous arid precipitate zirconium hut not iron. 

Recently, transition-metal-catalyzed reaction of iminoiodinanes 731 has been focused as a method of nitrogen transferring (Scheme 226). The iminoiodinanes 731 are readily synthesized from sulfor-amides or carbamates 730 by treatment with Phl-(OAc)2. The reaction of 731 with a transition-metal catalyst M produces the metal nitrenoid 732. The... 

An exceptionally strong acid in sulforic acid is hydrogen tetrakis(hydrogensulfato)-borate, HB(HS04)4. The compound has not been prepared and isolated in pure form, but solutions of it may be prepared in sulforic acid ... 

The relatively large valons found for the extraction equilibrium constant of copper with Kelex 100 (3 and 90) indicate (hat shipping of copper from (his rcngenl should he difficult. It is fonnd, however, that copper does strip reedily into sulfuric acid solutions because Kalex 100 reacts with sulhiric acid in preference to copper. Fitting the extinction of sulforic acid by Kelex 100 by a chemical-reaction equilibrium constant. 

Pregnant solution from the leaching circuit contains typically 40-50 g/L nickel, 0.7-1.0 g/L cobalt, 5-]0g/L copper, 120-180 g/L ammonium sulfate. 5-10 g/L sulfor as thiosulfate and polythionates. and 85-100 g/L Tree ammonia.1 Copper removal requires inilia] reseoval of ammonia followed by ptacipilation of copper in the form of coppar sulfides. The unoxidized sulfur in solution assists in the precipitation process. Removal of ammonia by steam injection releases cupric ions to react with these sulfur compounds, as shown by the reactions ... 

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