CAS number：10294-66-3
molecular formula：K2O3S2
molecular weight：190.32
EINECS number：233-666-8

English synonyms

thiosulfuricacid(h2s2o3),dipotassiumsalt;Thiosulfuricacid,dipotassiumsalt;POTASSIUM THIOSULFATE;POTASSIUM HYPOSULFITE;potassium thiosulphate;POTASSIUM THIOSULFATE, 75% SOLUTION IN W ATER;PotassiumThiosulfateK2S2O3;Potassium thiosulfate solution

Related categories

Biochemical Reagents; Inorganic Chemical Raw Materials; Biochemical Reagents-Other Chemical Reagents; Chemical Reagents; Other Raw Materials; Raw Materials; Chemical Raw Materials; Bulk; Chemical Materials; Inorganic Salts; Inorganics; Potassium; Synthetic Reagents

Introduction

Potassium thiosulfate is a kind of sulfur fertilizer and potash fertilizer used in crop planting and production, an effective soil nitrification inhibitor, and can also be used as a photographic fixer, a metal cleaner, a silver-plating electroplating solution, and a bleaching agent for cotton fabrics. Chlorine and printing and dyeing auxiliaries, can also be used as organic synthesis and analysis reagents.

Chemical properties

Use

●  Potassium thiosulfate is an inorganic salt compound that can be used to prepare other thiosulfate complexes or as a fertilizer to provide potassium and sulfur; it can also be used as a reducing agent and chemical analysis reagent. On the other hand, it can also be used as a photographic fixer, a metal cleaner, an electroplating solution for silver plating, a dechlorination agent for cotton fabrics after bleaching, and a printing and dyeing auxiliaries.

●  ①3K2S2O3·5H2O=661.07, colorless orthorhombic crystal. When heated, it decomposes into potassium sulfide and potassium sulfate without melting. Soluble in water, the aqueous solution is weakly alkaline. In case of acid, it decomposes to release sulfur dioxide and precipitate sulfur. ②K2S2O3·1/2H2O=196.34, colorless monoclinic deliquescence crystal. The relative density is 2.590 (anhydrous is 2.23), and the crystal water is lost at 200 ° C, and it will decompose if it continues to heat. Soluble in water, insoluble in ethanol. Restorative. It is prepared by co-cooking with potassium sulfite and sulfur.

Production method

●  First absorb sulfur dioxide into potassium sulfite with potassium carbonate solution, then add sulfur to boil, filter, concentrate and crystallize to obtain:

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