The properties and uses of sodium sulfide nonahydrate

Physicochemical properties of sodium sulfide nonahydrate: The anhydrate is white crystals, which are easy to deliquesce. Industrial products are often pink, brown-red, and khaki due to impurities.

Melting point 1180 ℃ Relative density 1.856 (14 ℃) Solubility soluble in water (solubility is 15.4g / 100ml water at 10 ℃, 57.2g / 100ml water at 90 ℃). Slightly soluble in alcohol, insoluble in ether. The aqueous solution is strongly alkaline. Soluble in sulfur to produce sodium sulfide.

Sodium sulfide nonahydrate uses:

Used in the manufacture of sulfur dyes, leather depilatory agents, metal smelting, photography, rayon denitration, etc. Widely used in leather making, paper making, mineral processing, dye production, organic intermediates, printing and dyeing, pharmaceuticals, monosodium glutamate, man-made fibers, special engineering plastics, polyphenylene sulfide, polyalkali rubber, also used in the production of sodium hydrosulfide, sodium polysulfide , Sodium thiosulfate, etc., also have certain uses in the military industry.

â‘  It is used in the dye industry to produce sulfur dyes and is the raw material for sulfur blue and sulfur blue.

â‘¡ Printing and dyeing industry used as a dyeing aid for dissolving sulfur dyes.

â‘¢ In the leather industry, it is used to hydrolyze and dehair the rawhide. It is also used to formulate sodium polysulfide to accelerate the soaking of the dry skin and soften it.

â‘£ Used as a cooking agent for paper in the paper industry.

⑤ Textile industry used for manmade fiber denitrification and nitrate recovery

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