sodium thiosulfate

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sodium thiosulfate,

Na2S2O3, colorless crystalline compound that is more familiar as the pentahydrate, Na2S2O3·5H2O, an efflorescent, monoclinic crystalline substance also called sodium hyposulfite or "hypo." Sodium thiosulfate is readily soluble in water and is a mild reducing agent. Because it dissolves silver salts, its major use is in photography for developing film. It is also used in chrome-tanning leather and in chemical manufacture. Sodium thiosulfate is produced chiefly from liquid waste products of sodium sulfide or sulfur dye manufacture. It is also produced from sodium carbonate, sulfur dioxide, and sulfur by a process that involves several steps.

Sodium Thiosulfate

 

(also sodium hyposulfite, N2S2O3), colorless crystals freely soluble in water (41.2 percent by weight at 20°C, 69.9 percent at 80°C). Sodium thiosulfate forms several crystal hydrates, of which only the pentahydrate Na2S2O3·5H2O is used in industry and in the laboratory.

Sodium thiosulfate is obtained by boiling a solution of sodium sulfite with sulfur in powder form: Na2SO3 + S = Na2S2O3. It is used as a fixing agent in photography and for determinations of iodine in iodometry; it also finds use in the textile industry and in other fields. In medicine, sodium thiosulfate is used as a desensitizer, an antiphlogistic, and an antitoxic agent. The antitoxic effect is based on the ability of sodium thiosulfate to form nontoxic compounds, including sulfites with arsenic, thallium, mercury, and lead and rhodanides with hydrocyanic acid. Sodium thiosulfate is usually administered intravenously (as a 10–30 percent solution) to those suffering from arthritis, dermatosis, poisoning, and illnesses related to allergies.

sodium thiosulfate

[′sōd·ē·əm ‚thī·ə′səl‚fāt]
(inorganic chemistry)
Na2S2O3·5H2O White, translucent crystals or powder with a melting point of 48°C; soluble in water and oil of turpentine; used as a fixing agent in photography, for extracting silver from ore, in medicine, and as a sequestrant in food. Also known as sodium hyposulfite; sodium subsulfite.
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The CuS nanostructures were prepared by hydrothermal method by using copper nitrate as a copper source and sodium thiosulphate as a sulfur source in the presence of CTAB as surfactant at 150[degrees]C.
She was again managed conservatively with antibiotics, regular haemodialysis and analgesics and continued to receive oral sodium thiosulphate. She underwent thrice weekly haemodialysis but approximately three months after the diagnosis of calciphylaxis she died of an acute myocardial infarction.
Sodium Thiosulphate (STS) has been used in calciphylaxis successfully.6,8 The mechanisms of its action remains unclear, however it may lower the calcium-phosphate product by binding to calcium to form calcium thiosulfate, a highly soluble calcium salt.9 Cessation of new lesion formation along with complete or partial wound healing and reduction in the size of subcutaneous plaques have been reported with the use of STS.9 There is no clear guidance about the appropriate duration of therapy, but most suggest continuing it until lesions have healed completely, and the course is often extended for several weeks or months thereafter in an effort to prevent recurrence.8
This effectively stopped any further administration of thiosulphate." Interestingly, Dr Max Daunderer from Germany and Bhopal's eminent forensic specialist, Dr Heeresh Chandra, had both found that sodium thiosulphate, when administered intravenously, improved the condition of patients.
It protects the active pharmaceutical ingredient, formulation and use in the company's Nithiodote and Sodium Thiosulphate Injection products.
Distilled water is added to bring the total volume of the mixture to 100 ml and sodium thiosulphate is added 0.5 h later.
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The provisions of this Framework Agreement apply to all defined below benefits: This is the supply and delivery of chemicals used by the various sites SIAAP, such as - Sodium bisulfite and sodium thiosulphate used in the exhaust air deodorisation chemically,- Hydrochloric acid- Sulfuric acid and formic acid- 27% ammonia water used in particular for the catalytic treatment of nitrogen oxides by selective catalytic reduction,- Citric acid- Ferric chloridedeliveries will be in small bulk containers (IBC 1m3), bottles, big bags, powder, flake etc.