Sodium hydrosulfide
| Price: | 35 UAH |
| Company: | HIMPRODUKT OOO |
| Seller: |  Otdel prodazh |
| Phones: |  +38(044) 228-08-72; +38(093) 880-15-15 Show phone |
| Address: | Ukraine, Kyiv |
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Hydrosulfide sodium
Hydrosulfide sodium acid sodium salt and hydrogen sulfide with the formula NaHS, white crystals. Forms several crystalline hydrates, for example NaHS•2H2O, NaHS•3H2O.
Hydrosulfide sodium is a white or colorless hygroscopic crystals very soluble in water. Crystalline forms. Is weak hydrolysis of salt - acidic salt of sodium and hydrogen sulfide. Melts without decomposition, molten sodium hydrosulfide is black. Typical the reducing agent is oxidized with oxygen in the air.
Density Of 1.79 g/cm3. The melting point of 350° C.
Hydrosulfide sodium (sulfhydrate sodium, sodium sulfur acid, sodium bisulfite) get the absorption of hydrogen sulfide gas (waste of various industries - carbon disulfide, 2-mercaptobenzthiazole) sodium hydroxide solution.
Chemical formula: NaHS
The invention relates to chemical industry and can be used to obtain the sodium hydrosulfide product is widely used in the production of soda ash, polysulfide plastics, pulp and paper, ore processing and leather industry.
Method obtaining of sodium hydrosulfide comprises the interaction of sodium sulphide with hydrogen sulfide. Used sodium sulfide pre-get recovery of sodium sulfate in the presence of calcium sulfate at a molar the ratio of Na2SO4:CaSO4, equal 1,0:0,5-1,25, next, the m leached, filtered and the filtrate containing the sodium sulfide is fed to the interaction with hydrogen sulfide, resulting from the interaction of sludge filtration with hydrochloric acid, and the solution formed is calcium chloride filtered from the sludge. The excess of hydrogen sulfide absorb an alkaline absorber. The present invention allows to reduce the cost of the process by using inexpensive and readily available raw materials. Additionally to chloride calcium is a valuable chemical product with wide application and stable market.
Hydrosulfide sodium is mainly used in nonferrous metallurgy in the beneficiation of ores non-ferrous metals by flotation. In flotation, it is reagent control in the beneficiation of copper, lead, zinc, molybdenum and armaniseries ores.
In the leather industry it is used as a component of the composition for removing the outer layer of the skins.
He also used as a raw material in the chemical industry (for the production of ethyl mercaptan, butifos, dyes).
In textile industry it is used in the production of artificial silk. Also, the sodium hydrosulfide is a bleach for cotton, linen, rayon and nylon.
Hydrosulfide sodium hydrosulfite is available in loose form (flaked) and solution. Packed in polypropylene bags weighing 25 kg. Transporterowych carload shipments by rail or small shipments road and river modes of transport in covered vehicles.
Hydrosulfide sodium is stored in closed dry storage spaces on wooden shelves or pallets at a relative humidity of not more than 70%. Selection from a solution of sodium hydrosulfide and hydrogen sulfide, therefore, unacceptable storage sodium hydrogen sulfide together with liquids, especially acids.
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