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Sodium thiosulfate (sodium thiosulphate) is an inorganic compound with the formula Na 2 S 2 O 3 ·(H 2 O) x. Typically it is available as the white or colorless pentahydrate (x = 5), which is a white solid that dissolves well in water.
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Thiosulfate (IUPAC-recommended spelling; sometimes thiosulphate in British English) is an oxyanion of sulfur with the chemical formula S 2 O 2− 3.Thiosulfate also refers to the compounds containing this anion, which are the salts of thiosulfuric acid, such as sodium thiosulfate Na 2 S 2 O 3 and ammonium thiosulfate (NH 4) 2 S 2 O 3.
Melting point: 432 °C (810 °F; 705 K) Boiling point: ... The agent used is sodium thiosulfate, and reacts according to the following equation: [2] AgX(s) ...
Melting point: 65 °C (149 °F; 338 K) decomposes [1] ... (sodium thiosulfate or ammonium thiosulfate). [7] Ammonium sulfite can also be used in the making of bricks ...
Sodium persulfate is the inorganic compound with the formula Na 2 S 2 O 8. It is the sodium salt of peroxydisulfuric acid , H 2 S 2 O 8 , an oxidizing agent . It is a white solid that dissolves in water.
It is also known under names disodium dithionate, sodium hyposulfate, and sodium metabisulfate. The sulfur can be considered to be in its +5 oxidation state . It should not be confused with sodium dithionite , Na 2 S 2 O 4 , which is a very different compound, and is a powerful reducing agent with many uses in chemistry and biochemistry.
This indicates the end-point of the titration. As an alternative, ascorbic acid can be treated with iodine in excess, followed by back titration with sodium thiosulfate using starch as an indicator. [40] This iodometric method has been revised to exploit the reaction of ascorbic acid with iodate and iodide in acid solution. Electrolyzing the ...