Industrial Sodium Sulfide
Product Features：
Red or yellow flakes with a little irritating odor.
Application Areas：
Used in Dying for produce sulfur dye, it is the raw material of sulfur blackand sulfur blue.
Used in printing and dyeing industry as an dyeing auxiliary of sulfide dyes;
Used in the leather tanning industry for hair remove.
Used in the paper making as a chemical of pulping digestion.
Also used as raw material for sodium hyposulfite, sodium polysulfide,sodium bisulfide and other.
Index | TLZ-SSD01 | TLZ-SSD02 |
Na₂S Content | 50% min | 60% min |
Na₂SO₃ Content | 2% max2% max | - |
Na₂S₂O₃ Content | 0.003 % | - |
lron | 3.5% max | 0.003% |
Na₂CO₃ Content | 0.2% max | 2.0% max |
Water Insoluble Content | 50% min | 0.05%max |
Industrial Sodium Sulfide is a crucial inorganic compound widely used in sectors such as mining, leather processing, water treatment, dye manufacturing, and the paper industry. With strong alkaline properties and excellent reducing capability, Industrial Sodium Sulfide plays a critical role in chemical reactions, desulfurization, and heavy metal removal.
In this comprehensive guide, we delve into the production, properties, uses, safety, and sourcing considerations of Industrial Sodium Sulfide, helping manufacturers and distributors make informed decisions.
🔍 What Is Industrial Sodium Sulfide?
Industrial Sodium Sulfide (Na₂S) is a yellow to red flake or crystalline solid with a distinctive odor of rotten eggs, due to hydrogen sulfide (H₂S) release upon contact with moisture. It's manufactured by reducing sodium sulfate or sodium carbonate with carbon and sulfur at high temperatures.
The compound is commercially available in various grades such as:
Sodium Sulfide Flakes (Na₂S ≥ 60%)
Low Iron Industrial Sodium Sulfide
Hydrated or Anhydrous forms
Its ability to act as a powerful reducing agent and alkaline cleaner makes it indispensable in industrial production.
⚗️ Chemical & Physical Properties of Industrial Sodium Sulfide
| Property | Specification |
|---|---|
| Chemical Formula | Na₂S |
| CAS Number | 1313-82-2 |
| Appearance | Yellow/red flakes or crystals |
| Odor | Strong sulfur (H₂S) smell |
| Solubility | Soluble in water, releases H₂S |
| Melting Point | ~1,175°C (anhydrous) |
| pH (1% solution) | >12 (strongly alkaline) |
| Industrial Grade Purity | 60–70% Na₂S |
Industrial Sodium Sulfide reacts easily with acids, oxidizers, and moisture, making storage and handling critical for safety and performance.
🏭 Main Applications of Industrial Sodium Sulfide
🪨 1. Mining and Ore Flotation
Industrial Sodium Sulfide is used to depress the flotation of iron pyrites in sulfide ores and to activate copper or lead ores. It enhances the selectivity and yield in mineral separation processes.
👞 2. Leather and Tanning Industry
In dehairing hides, Industrial Sodium Sulfide breaks down keratin and helps remove unwanted proteins. It is essential in the liming process for rawhide preparation.
🧪 3. Dye and Pigment Production
It serves as a raw material in the synthesis of sulfur-based dyes and intermediates, such as sulfur black and vat dyes. Its reducing power ensures consistent chemical reactions.
💧 4. Water Treatment
Industrial Sodium Sulfide precipitates heavy metals such as mercury, lead, and copper from wastewater, ensuring environmental compliance for factories and treatment plants.
📄 5. Pulp and Paper Manufacturing
Used in the Kraft process, Industrial Sodium Sulfide breaks down lignin, softens wood chips, and aids in producing high-strength paper pulp.
🔩 6. Chemical Synthesis and Desulfurization
It acts as a key reactant in chemical manufacturing and is also used to remove sulfur from petroleum and natural gas streams.
✅ Benefits of Industrial Sodium Sulfide
Cost-Effective Reducing Agent: Ensures high yield in redox reactions
Highly Reactive: Ideal for fast, efficient chemical processes
Multi-Industry Utility: Suits mining, tanning, textile, and more
Heavy Metal Removal: Enables safe and clean wastewater discharge
Custom Grades Available: Including low-iron, high-purity, and stabilized forms
📦 Packaging & Storage
Standard Packaging: 25kg or 50kg plastic woven bags with PE lining
Bulk Options: 1-ton jumbo bags for large-scale industrial use
Storage Guidelines:
Store in a cool, dry, ventilated area
Avoid moisture and direct sunlight
Keep away from acids and oxidizers
Proper packaging ensures long shelf life and safety of Industrial Sodium Sulfide during transport and storage.
⚠️ Handling & Safety Precautions
Due to its potential to release toxic hydrogen sulfide gas, Industrial Sodium Sulfide requires strict safety measures:
Wear chemical-resistant gloves, goggles, and protective clothing
Use in well-ventilated or exhaust-ventilated environments
Store away from water sources to prevent unwanted reactions
Refer to the MSDS (Material Safety Data Sheet) before use
In case of exposure, seek immediate medical attention
🌐 Sourcing Tips for Industrial Sodium Sulfide
To ensure process reliability and regulatory compliance, choose a trusted supplier that offers:
ISO-certified production
Third-party quality testing
Technical support for application optimization
Flexible packaging and bulk order options
Global shipping with proper hazard classification
Working with an experienced supplier ensures consistent quality and uninterrupted supply of Industrial Sodium Sulfide for your operations.
📈 Why Industrial Sodium Sulfide Is in Constant Demand
The growing need for efficient chemical processes, environmentally safe wastewater treatment, and high-performance materials is driving demand for Industrial Sodium Sulfide. Its ability to react precisely and consistently in diverse industrial scenarios makes it a cornerstone chemical in global supply chains.
Whether you’re a chemical processor, metallurgist, or manufacturer, sourcing high-quality Industrial Sodium Sulfide ensures safety, efficiency, and profitability.
