Description

Sodium Polysulfide is an inorganic chemical compound primarily known for its role as a versatile sulfur transfer agent and reducing agent. This product is critical for industrial processes requiring controlled sulfur chemistry, offering a stable and reactive source of polysulfide anions. Key industries that rely on this material include leather processing, specialty polymer synthesis, and metallurgical applications for ore flotation and metal recovery.

Application

• Leather Depilation: Used in the beamhouse process for unhairing hides, where it breaks down keratin.
• Polymer Modification: Acts as a cross-linking or vulcanizing agent in the synthesis of specialty rubbers and polysulfide polymers (Thiokol).
• Mining & Metallurgy: Employed as a flotation agent for the recovery of copper, lead, and other sulfide ores.
• Chemical Synthesis: Serves as a sulfurating or reducing agent in organic synthesis and the production of sulfur dyes.
• Wastewater Treatment: Used for the precipitation and removal of heavy metals (e.g., mercury) from industrial effluents.
• Agricultural Chemicals: A component in certain fungicides and pesticides.
• Analytical Chemistry: Utilized in specific qualitative and quantitative analytical methods.

Basic Information

Product Name	Sodium Polysulfide
CAS No.	1344-08-7
Molecular Formula	Na₂Sₓ (x typically 2-5)
Molecular Weight	Variable (based on sulfur chain length)
Synonyms	Sodium Polysulfide; Sodium Sulfide (Polysulfide); Sodium Polysulphide; Sodium Tetrasulfide; Sodium Pentasulfide; Sodium Hydrogen Sulfide (Polysulfide); Sodium Sulfide (Na₂Sₓ); Disodium Polysulfide
EINECS	215-715-5

Quality Control

Our Sodium Polysulfide is manufactured under strict process controls to ensure batch-to-batch consistency and reliability. Quality is verified through a series of analytical tests including assay (titration), sulfide and polysulfide content analysis, and impurity profiling. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizing agents. Due to its alkaline nature and sensitivity to oxidation and moisture, it is recommended to store under an inert atmosphere for long-term stability. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Reddish-brown to yellow solution or solid
Assay (as Na₂Sₓ)	≥ 40% (Solution) / Contact for details (Solid)
Sulfur Content (Sₓ²⁻)	Contact for details
pH (of solution)	≥ 12
Heavy Metals (as Pb)	< 10 ppm
Iron (Fe)	< 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.