Selenium Sulfide/do Sulfide is used to treat dandruff and certain scalp infections.It reduces itching,flacking,irritation.It also used for the condition that causes discolouration of skin..
Application
Mainly used in dyeing industry ,nonferrous metallurgy industry as the floating agent, leather industry as the depilation agent ,
paper making industry and textile industry.
Application
Mainly used in dyeing industry ,nonferrous metallurgy industry as the floating agent, leather industry as the depilation agent ,
paper making industry and textile industry.
low oxygen Selenium Granules
Size: 2-6mm.3-5mm,1-10mm or as required
Molecular Formula - Se
Molecular Weight - 78.96
Melting Point - 217 C
Boiling Point - 684.9 + 1.0 C
Relative Density - 4.81 g /cm3
Purity - 99.99%
Appeaance - Black
Products name: sodium sulphide, sodium sulfide, molecular formula: na2s, character: solid-fused or granular, brown red color, soluble in water, presenting strong alkaline solution, easily oxidized when exposed to air, poisonus., used as making sulphur dyes or dyestuff intermediate reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in paper-making. Also widely in pigment and rubber industry, etc., , , ,
Sodium sulfide is a chemical compound known for its multiple industrial applications, primarily in the realm of metallurgy and the production of chemicals. It is a yellow to red solid or solution that serves as a powerful reducing agent, facilitating the removal of oxygen from various metal ores during ore processing, thereby aiding in the extraction of metals like copper, lead, and zinc. Sodium sulfide also plays a role in the leather industry for hair removal during leather processing and in the textile industry for dyeing and desulfurization. Additionally, it is used in wastewater treatment as a precipitating agent for heavy metals and in the production of various organic chemicals. Its versatility as a reducing and sulfur-bearing agent makes sodium sulfide crucial in multiple industrial processes.
Hydrogen sulfide is a hydride of sulfur with the chemical formula H2S. It is a colorless, foul-smelling (rotten egg) highly toxic gas. It is soluble in water and ethanol, with a specific gravity of 1.1906. The melting point is -85.5�°C, the boiling point is -60.4�°C, the critical temperature is 100.4�°C, and the critical pressure is 90.06�?105 Pa. The autoignition point is 260�°C, and it is flammable. It can cause explosive combustion when it encounters a spark. When mixed with air, it can cause an explosion, and the explosion limit is 4% to 44% (volume). It can react chemically with a variety of ions to produce water-insoluble sulfides, which can turn the surface of copper and silver black. It is widely present in the manufacturing industries of metal smelting, natural gas, hydrochloric acid and sulfuric acid. When manufacturing various sulfides such as sulfate pulp, rayon, artificial cotton, rubber, carbon disulfide, etc., hydrogen sulfide gas is often discharged. In some chemical reactions, unstable sulfur-containing compounds will also decompose into hydrogen sulfide. For example, in coking, refined petroleum and metal smelting, hydrogen sulfide, as a conventional waste gas, is very easy to leak into the air. The decomposition of sulfur dyes can also release hydrogen sulfide gas.
Chemical properties Hydrogen sulfide is a colorless, acidic gas with a rotten egg-like odor. Relative density 1.5392 (0â??). Melting point 85.5â??. Boiling point -60.3â??. Critical temperature 100.5â??. Critical pressure 9.0�?103Pa. Heat of vaporization 18.67kJ/mol; heat of fusion 23.80kJ/mol. Vapor pressure 2.7kPa (25.5â??). Vapor relative density 1.19. Ignition point 260â??. Explosion limits: lower limit is 4.3% (volume), upper limit is 40.0% (volume). The allowable concentration in the air is 10�?10-6 (ppm). Soluble in water, ethanol, glycerol, Chemicalbook, carbon disulfide. Extremely soluble in organic amines. Also highly soluble in caustic soda solutions. Burns in excess oxygen to produce sulfur dioxide and water, and produces water and free sulfur when oxygen supply is insufficient. Stable at room temperature. Uses Hydrogen sulfide is used in the synthesis of phosphors, electroluminescence, photoconductors, photoelectric exposure meters, etc. Reducing agent for organic synthesis. Used in metal refining, pesticides, medicines, and catalyst regeneration. General reagent. Preparation of various sulfides. Uses Used to separate and identify metal ions, purify hydrochloric acid and sulfuric acid, and prepare elemental sulfur Uses Can be used to convert sulfur and sulfuric acid, produce sodium sulfide and sodium hydrosulfide, or to produce organic sulfur compounds such as thiophene, mercaptans, and thioethers
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