Description

Sodium Sulfide CAS NO 1313-82-2 is an inorganic compound widely recognized as a versatile reducing agent and sulfur source in industrial chemistry. Its strong nucleophilic and alkaline properties make it indispensable for processes requiring the cleavage of disulfide bonds or the precipitation of heavy metals. This chemical is a critical raw material for key industries including leather processing, textile manufacturing, pulp and paper production, and water treatment. We supply high-purity grades to meet the stringent demands of global industrial applications.

Application

• Leather Processing: As a key depilatory agent for unhairing hides and skins.
• Pulp & Paper Industry: Used in the Kraft process for digesting wood pulp and as a bleaching chemical.
• Textile Manufacturing: Employed as a reducing agent in sulfur dyeing and printing processes.
• Water Treatment: For the precipitation and removal of heavy metal ions from industrial wastewater.
• Chemical Synthesis: Acts as a sulfurizing agent and reducing agent in the production of various organic and inorganic chemicals.
• Mining & Metallurgy: Utilized in ore flotation and as a reducing agent in metal extraction processes.
• Dye & Pigment Production: Serves as a key intermediate in the manufacture of sulfur dyes and other colorants.

Basic Information

Product Name	Sodium Sulfide
CAS No.	1313-82-2
Molecular Formula	Na2S
Molecular Weight	78.04 g/mol (Anhydrous)
Synonyms	Sodium monosulfide; Disodium sulfide; Sodium sulfide (Na2S); Sulfurated soda; Sodium sulphide; Solfuro di sodio; Natriumsulfid; Sodium sulfide anhydrous
EINECS	215-211-5

Quality Control

Our Sodium Sulfide is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. Production adheres to relevant industrial and chemical standards. Comprehensive quality testing is performed, including assay, impurity profiling, and physical property verification. A Certificate of Analysis (COA) documenting all test results is provided with each shipment to guarantee product integrity and support your quality assurance protocols.

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 hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed to prevent absorption of atmospheric moisture and carbon dioxide. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	Yellow or red-brown flakes or lumps
Identification (IR)	Conforms
Assay (as Na2S)	≥ 60.0%
Iron (Fe)	≤ 0.003%
Water Insoluble Matter	≤ 0.2%
Sodium Carbonate (Na2CO3)	≤ 2.0%
Sodium Thiosulfate (Na2S2O3)	≤ 1.0%

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