Thermal decomposition of sulphur hexafluoride

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Reactions with disulphur monoxide solutions obtained by the reduction of cupric oxide by elemental sulphur

When the products of reaction between elemental sulphur and copper oxide at elevated temperature in vacuum are bubbled through chilled inert organic solvents like carbontetrachloride, orange-yellow solutions were obtained indicating the presence of lower oxide of sulphur. This lower oxide has been found to be disulphur monoxide as shown by three different types of reactions; (1) Mercury decomposition, (2) Reaction with hydrogen iodide and hydrolytic reaction in an alkaline homogeneous medium

Studies on the Chemical Behaviour of Sulphur Mono Bromide

A solution of sulphur monobromide in carbon tetrachloride was found to undergo hydrolytic reactions giving sulphide, sulphite, thiosulphate, polythionates and elemental sulphur in different quantities depending upon experimental conditions. Such a solution was also found to react with anhydrous hydrogen iodide producing hydrogen sulphide quantitatively and liberating an equivalent amount of iodine. A solution of sulphur monobromide in dioxane was oxidized smoothly by chloramine-T, converting the entire S quantity to sulphuric acid

Studies in the Chemical Behaviour of Sulphur Compounds. XI. Formation of Polythionates by the Reaction between Polythiopiperidines and Sulphite and Thiosulphate

Starting from the thiopiperidines, long unbranched sulphur chains containing 3 to 8 sulphur atoms were built making use of sulphite and thiosulphate in acetic acid medium. The Probable mode of formation of these chains as the polythionic acids $H_2S_nO_6$ is discussed. When the products of reaction between a solution of sulphur in piperidine and sulphite in presence of acetic acid were analysed, thiosulphate was found to be the major product of reaction with a small amount of polythionates associated with it. Trithionate and hydrogen sulphide were present in negligible amounts. A tentative mechanism for the reaction has been proposed

Studies on phosphorus oxychloride and aluminium chloride complex

1. Anhydrous aluminium chloride reacts with phosphorus oxychloride to give a complex with a composition AlCl3.2 POCl3 which can be prepared in the form of a free flowing powder. 2. The phosphorus oxychloride-aluminium chloride complex in nitrobenzene dissociates into AlCl3.POCl3 and POCl3 as indicated by the cryoscopic measurements. 3. The solution of the complex in nitrobenzene has a higher specific conductivity than the corresponding electrical conductivities of individual components. Similar higher electrical conductance is observed when the two components are mixed in nitrobenzene in different proportions. 4.When a solution of anhydrous aluminium chloride in nitrobenzene is titrated conductometrically against a solution of phosphorus oxychloride in nitrobenzene, a limiting value in the conductivity is reached at point corresponding to the molecular composition, the components in the ratio of 1:2 AlCl3: POCl3 in solution. 5. The absorption maxima of the complex in nitrobenzene solution differ from the absorption maximum of the individual components

Formation of Disulphur Monoxide by the reaction between metallic oxides and sulphur in vacuum

Several metallic oxides such as copper (II) oxide and nickel (II) oxide have been found to react with elemental sulphur at elevated temperature under vacuum giving a sulphur rich oxide along with sulphur dioxide. The lower oxide of sulphur has been found to be disulphur monoxide. The reduction of the metallic oxides with elemental sulphur at atmospheric pressure was found to yield sulphur dioxide only

Analysis of metal thiourea complexes by chloramine-T oxidation

A rapid method is described for the analysis of metal thiourea complexes of Zn, Cd, Hg and Cu by adding excess of chloramine-T and determining the excess iodometrically. Colloidal suspensions of metal sulphides (Cu, Hg, Zn, Cd) have been found to undergo rapid oxidation to sulphate quantitatively in acid medium by chloramine-T

Determination of sulphur monochloride by oxidation with chloramine-T

A rapid method is described for the determination of sulphur monochloride by adding excess of chloramine-T and determining the excess iodometrically