(Na2S)
Sodium sulfide (Na₂S) is a highly versatile inorganic chemical widely used in chemical, textile, and metallurgical industries. It is produced in various purity grades, including technical-grade (≥60%) and high-purity grade (≥98%), catering to industrial, laboratory, and commercial applications. The purity determines its suitability for specific processes such as leather processing, chemical synthesis, and water treatment. Proper production ensures consistent reactivity, minimal impurities, and compliance with international standards.
Sodium sulfide is available in solid and aqueous solution forms. Solid forms include yellow to red-yellow granules, flakes, or powder, depending on the grade and moisture content. Solutions are typically colorless to yellowish, highly alkaline, and caustic. Analytical testing includes sulfide content, alkalinity, moisture, and impurity levels to guarantee product quality and performance for all industrial applications.
Production follows ISO, ASTM, and national standards to ensure chemical composition, purity, and safety. Quality control includes testing for sulfide concentration, sodium content, and heavy metal impurities, along with moisture and pH measurements. Certificates of Analysis (COA) are provided to confirm compliance, reliability, and suitability for various industrial applications.
Sodium sulfide has a wide range of applications across multiple sectors:
Leather Industry:
Used in dehairing hides and skin processing.
Textile Industry:
Serves in bleaching, dyeing, and desulfurization of fibers.
Chemical Industry:
Employed in the production of sulfur dyes, rubber chemicals, and other sodium compounds.
Metallurgy & Mining:
Used in flotation processes, metal recovery, and ore treatment.
Water Treatment:
Acts as a precipitating agent for heavy metals and as a sulfide source for specific chemical processes.
Pulp & Paper Industry:
Used for delignification and in sulfur-based processing.
Leather Industry:
Used in dehairing hides and skin processing.
Textile Industry:
Serves in bleaching, dyeing, and desulfurization of fibers.
Chemical Industry:
Employed in the production of sulfur dyes, rubber chemicals, and other sodium compounds.
Metallurgy & Mining:
Used in flotation processes, metal recovery, and ore treatment.
Water Treatment:
Acts as a precipitating agent for heavy metals and as a sulfide source for specific chemical processes.
Pulp & Paper Industry:
Used for delignification and in sulfur-based processing.
Sodium sulfide is available in 25–50 kg polyethylene or plastic bags, 500–1000 kg jumbo bags, and bulk containers. Packaging is designed to protect from moisture and prevent accidental reactions, ensuring safe storage, handling, and transportation. Proper packaging also preserves chemical quality and minimizes environmental hazards.
Sodium sulfide is highly caustic and toxic, releasing hydrogen sulfide (H₂S) when in contact with acids or moisture. Direct contact with skin and eyes may cause severe irritation or burns, and inhalation of dust or vapors is hazardous. Proper personal protective equipment (PPE) including gloves, goggles, and respiratory protection is mandatory. Spills should be contained and neutralized immediately. Environmental precautions include preventing runoff into water bodies due to potential toxicity to aquatic life.
Sodium sulfide should be stored in cool, dry, and well-ventilated areas, away from acids, moisture, and incompatible materials. Solid forms must be sealed in moisture-proof, corrosion-resistant containers, while solutions require properly labeled chemical-resistant tanks. Safe storage preserves product stability, minimizes hazard risks, and ensures long shelf life.
Sodium sulfide is a critical industrial chemical used in leather, textile, chemical, metallurgical, and water treatment applications. With multiple grades, standardized production, and strict quality control, it offers reliable performance across industries. Adhering to proper handling, storage, and safety protocols ensures operational efficiency, environmental responsibility, and safe use of sodium sulfide in all industrial processes.