Inorganic compounds sodium thiosulfate

A chloroform solution of toxic tributyltin fluoride was placed in a round-bottomed flask equipped with a reflux condenser, and bromine (3 equiv per Bu3SnF) was added all at once. After the mixture was stirred for 2-3 days at room temperature, aqueous sodium thiosulfate was added until the brown color of bromine disappeared. The aqueous layer containing inorganic tin compounds.was disposed of in accordance with Prudent Practices for Disposal of Chemicals from Laboratories" National Academic Press Washington, DC, 1983. 

Sulfur can be effectively removed from a compound, organic or inorganic, by contact with Raney nickel. The action has been described by Aubry (118) as being noncatalytic in nature. One atom of sulfur is removed from sodium thiosulfate in the cold, yielding sodium sulfite from which the sulfur can be completely removed at 100°. Although sulfur can be completely removed from stannous sulfide, it can be only partially removed from antimony sulfide. Following are some of the inorganic compounds from which sulfur removal by use of Raney nickel has been observed (119). 

As the inorganic additives to polyamides recommended in the literature, we should mention primarily salts of trivalent chromium [77, 78). The use of compounds of di- and hexavalent chromium is also possible. However, during the process of treatment of the polyamide with the stabilizer, divalent chromium is oxidized, while hexavalent chromium is reduced to the trivalent form. Thus, for example, polyamide fibers are treated first with potassium bichromate and then with sodium thiosulfate [77]. Certain chromium dyes also exhibit a protective action against sunlight [79]. 

Sodium chloride sat d aq. sol n Sodium chromate tetrahydrate Sodium dichromate <30% aq. sol n Sodium fluoride sat d aq. sol n Sodium fluorosilicate Sodium hydrogen sulfide Sodium hypochlorite 30-70% sat d aq. sol n Sodium hypochlorite <30% sat d aq. sol n Sodium metabisulfite 38% Aq. sol n Sodium sulfide 60% aq. slurry Sodium thiosulfate sat d aq. sol n Inorganic Cyano Compounds Cyanogen bromide gas... 

However, there are some important cases with good characteristics for continuous cooling operations, using scraped siuface crystallizers. Some examples of where scraped stu4ace continuous crystallizers offer advantages include sodium sulfate, potassimn nitrate, sodiiun carbonate, nickel sulfate, ammonium thiosulfate, caldtun nitrate, as well as many other inorganic compounds. 

Inorganic sulfur compounds such as sodium metabisulfite, sulfite, and thiosulfate... 

Many substances are known to act as accelerators for concrete. These include soluble inorganic chlorides, bromides, fluorides, carbonates, thiocyanates, nitrites, nitrates, thiosulfates, silicates, aliuninates, alkali hydroxides, and soluble organic compounds such as triethanolamine, calcium formate, calcium acetate, calcium propionate, and calcium butyrate. Some of them are used in combination with water reducers. Quick setting admixture s used in shotcrete applications and which promote setting in a few minutes may contain sodium silicate, sodium aluminate, aluminum chloride, sodium fluoride, strong alkalis, and calcium chloride. Others are solid admixtures such as calcium aluminate, seeds of finely divided Portland cement, silicate minerals, finely divided magnesium carbonate, and calcium carbonate. Of these, calcium chloride has been the most widely used because of its ready availability, low cost, predictable performance characteristics, and successful application over several decades.In some countries the use of calcium chloride is prohibited, in some others, such as Canada and the USA, the use of calcium chloride is permitted provided certain precautions are taken. Attempts have continued to find an effective alternative to calcium chloride because of some of the problems associated with its use. 

Many inorganic and organic salts have been examined for their action on the hydration of cement and cement compounds utilizing thermal techniques. They include sodium and calcium salts of chloride, bromide, nitrite, thiosulfate, thiocyanate, iodide, nitrate, hydroxide, carbonate, hydroxide, etc. A few typical examples are given illustrating the application of thermal techniques in the investigation of these compounds on cements and cement components. 

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