Sodium Sulphide Yellow Flakes

Sodium Sulphide (Yellow Flakes) is a versatile industrial chemical, particularly valued for its strong reducing properties and its ability to react with metals, organic compounds, and other chemicals. Its wide range of applications across industries such as leather tanning, textiles, and chemicals underscores its importance in industrial processes. However, due to its toxic nature, careful handling and storage are essential.

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CAS: 1313-82-2

HSN Code: 28301000

Chemical Formula: Na₂S

Applications

Properties

• Leather Industry: Dehairing Agent: Used extensively in the leather tanning industry as a dehairing agent to remove hair from animal hides during the unhairing process. Lime Sulphide Depilation: In combination with lime, it helps in depilation and loosening of the hair on hides.
• Textile Industry: Dyeing: Used as a reducing agent in the dyeing process for certain dyes, particularly in the production of sulphur dyes. Textile Processing: "Employed in the treatment of textiles to improve dye uptake and finish.
• Pulp and Paper Industry: Kraft Process: Used in the kraft process for paper pulping, where it acts as a source of sulphide ions, breaking down the lignin in wood to produce pulp.
• Chemical Industry: Production of Sulphur Compounds: A key raw material in the production of sulphur-containing compounds such as sodium thiosulfate, sodium polysulfides, and other chemicals. Ore Flotation: Used in the mining industry as a flotation agent for ore beneficiation, particularly in the recovery of certain metals like copper, lead, and zinc.
• Water Treatment: Wastewater Treatment: Employed in the treatment of industrial wastewater to precipitate heavy metals, converting them into insoluble metal sulphides that can be easily removed.
• Photographic Industry: Used in the manufacture of photographic chemicals, where it acts as a reducing agent.
• Rubber and Plastics Industry: Vulcanization: Utilized in the vulcanization process of rubber to cross-link polymers, enhancing the strength and elasticity of rubber products.
• Oil Refining: Desulfurization: Applied in the oil refining industry to remove sulphur compounds from petroleum products.
• Pharmaceutical Industry: Used in the synthesis of certain pharmaceutical intermediates and active ingredients.

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