Sodium Sulfide (Na₂S)

Product Overview

Sodium Sulfide is a highly reactive inorganic chemical widely used in pulp and paper, leather processing, water treatment, and chemical manufacturing. Known for its strong reducing properties and ability to release hydrogen sulfide, it serves as a key reagent in industrial applications requiring sulfide ions.

Typically supplied as a yellow to red crystalline solid or flakes, Sodium Sulfide provides consistent reactivity, high purity, and ease of handling for industrial processes.

Key Product Identification

• Product Name: Sodium Sulfide

• Chemical Formula: Na₂S

• CAS Number: 1313-82-2

• Molecular Weight: 78.04 g/mol

• HS Code: 28301000

• Appearance: Yellow to red crystalline solid or flakes

• Odor: Characteristic sulfur odor

• Solubility: Highly soluble in water, forming an alkaline solution

Chemical & Physical Properties

Manufacturing & Quality Control

Sodium Sulfide is manufactured by reacting sulfur with sodium hydroxide or sodium carbonate under controlled conditions. Strict quality control ensures high purity, stable sulfide content, and minimal impurities.

Quality assurance includes:

• Assay and purity testing

• Moisture and solubility analysis

• Heavy metals and impurity monitoring

• Batch traceability with COA

Available grades:

• Industrial Grade

• Leather Grade

• Technical Grade

Applications of Sodium Sulfide

Pulp & Paper Industry

• Used in the Kraft process for wood pulping

• Enhances delignification and fiber separation

Leather Processing

• Dehairing and depilation of hides

• Reduces sulfide-based tanning agents efficiently

Chemical Manufacturing

• Intermediate in the production of thiochemicals, sulfur dyes, and sulfur-containing compounds

• Acts as a strong reducing agent in chemical reactions

Water Treatment

• Precipitation of heavy metals

• Sulfide-based treatment for wastewater and industrial effluents

Packaging & Storage

• Packaging Options:

• 25–50 kg kraft paper bag with PE liner

• 500–1,000 kg jumbo bag

• Custom packaging available

• Storage Conditions:

• Store in a cool, dry, ventilated area

• Protect from moisture, acids, and oxidizing agents

• Keep containers tightly closed

• Shelf Life: 12 months under proper storage conditions

Safety & Handling

• Corrosive and strongly alkaline; handle with care

• Avoid skin and eye contact; use gloves, goggles, and protective clothing

• Strong odor of H₂S; ensure adequate ventilation

• Refer to SDS / MSDS for detailed safety instructions

Regulatory & Compliance

Available documentation:

• COA (Certificate of Analysis)

• SDS / MSDS

• REACH and export compliance

• Industry-specific certificates

Why Choose Our Sodium Sulfide?

• ✔ High purity and consistent sulfide content

• ✔ Suitable for pulp, leather, chemical, and water treatment industries

• ✔ Reliable supply and competitive pricing

• ✔ Strict quality control and traceable batches

• ✔ Professional technical support

Frequently Asked Questions (FAQ)

Q1: What is Sodium Sulfide used for?

It is used in pulp and paper, leather processing, chemical manufacturing, and water treatment.

Q2: How should Sodium Sulfide be stored?

Store in a cool, dry, ventilated area, away from acids and moisture.

Q3: Is it soluble in water?

Yes, it dissolves readily in water, forming a strongly alkaline solution.

Q4: Is it safe to handle?

It is corrosive and releases H₂S gas; proper PPE and ventilation are required.