Sodium Hydrosulfide
High Purity Sodium Hydrosulfide (NaHS) 70% Manufacturer – CAS 16721-80-5
Sodium hydrosulphide CAS 16721-80-5 provides ≥70% purity in flake form for mineral flotation, leather tanning, wastewater treatment, and pulp processing. Its reactive sulfur chemistry supports sulfidizing, reduction, and metal sulfide formation. In addition, good solubility and controlled composition help maintain stable performance in mining and metallurgical operations.
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Data Sheet
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Formula:
NaHS
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CAS Number:
16721-80-5
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Purity:
≥70%
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Product Name:
Sodium Hydrosulfide / Sodium Hydrosulphide
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Molecular Weight:
56.06
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Appearance:
Yellow to pale brown flakes
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Solubility:
Easily soluble in water and alcohol
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Odor:
Slight hydrogen sulfide odor
Chemical Formula of Sodium Hydrosulfide: NaHS
Sodium Hydrosulfide consists of sodium ions (Na⁺) and hydrosulfide ions (HS⁻), which provide strong sulfidizing properties when dissolved in water.This chemical property makes NaHS extremely effective in mineral flotation processes and heavy metal precipitation reactions.
Sodium Hydrosulphide for Sulfidizing and Mineral Flotation
Sodium hydrosulphide is an inorganic sulfur compound used in processes that need strong sulfur activity. This NaHS product carries CAS 16721-80-5 and offers ≥70% purity in flake form. Its reactive profile makes it useful in mineral flotation, metallurgical treatment, leather processing, wastewater treatment, and pulp production.
In mineral processing, sodium hydrosulphide works as a sulfidizing agent. It helps convert selected metal oxides into metal sulfides on particle surfaces. As a result, flotation reagents can interact more easily with target minerals during separation.
Key Features of Our Sodium Hydrosulfide
High Purity and Strong Chemical Activity
Our NaHS flakes provide consistent sulfur activity, ensuring reliable performance in mineral flotation and industrial chemical processes.
Fast Dissolution
The flake structure provides a large surface area, allowing rapid dissolution in water for efficient industrial dosing.
Low Impurity Content
Strict quality control during manufacturing helps reduce impurities that may affect flotation performance or chemical reactions.
Stable Industrial Supply
We maintain reliable production capacity and global export capability, ensuring stable supply for large-scale industrial customers.
Reactive Sulfur Flakes for Mining and Metallurgical Use
Mining operations often use NaHS in copper, lead, zinc, and other non-ferrous mineral systems. It can also act as a depressant in selected flotation circuits. Because ore types and flotation conditions vary, dosage control and solution preparation need careful adjustment during plant operation.
Leather tanning processes may use sodium hydrosulphide during hair removal and treatment stages. At the same time, wastewater treatment systems can apply it to precipitate heavy metals as sulfides. This reaction helps facilities manage metal-containing streams under controlled treatment conditions.
Pulp processing and chemical manufacturing also use sodium hydrosulphide where sulfur chemistry supports reduction or process modification. The ≥70% flake grade dissolves well and allows practical handling in many industrial systems. In addition, stable composition helps operators prepare working solutions with more predictable concentration.
Because NaHS has strong reactivity, storage and handling require suitable packaging, ventilation, and safety procedures. Vanchor supplies sodium hydrosulphide with specification checks, flake quality control, and export supply support. This helps mining, chemical, leather, and treatment operations source a consistent sulfur compound for demanding industrial use.
Major Industrial Applications of Sodium Hydrosulfide
Mining & Mineral Flotation
Sodium Hydrosulfide is widely used as a sulfidizing agent and depressant in mineral processing.
It is especially effective for the flotation of:
- Copper ores
- Molybdenum ores
- Lead and zinc minerals
NaHS improves mineral separation efficiency and recovery rates in flotation circuits.
Leather & Tanning Industry
In leather processing, Sodium Hydrosulfide is used during the liming and dehairing stage.
It helps:
- Remove hair from animal hides efficiently
- Improve pelt cleanliness
- Enhance leather quality and processing efficiency
Pulp & Paper Industry
NaHS is used in chemical pulping processes, particularly in the Kraft process, where it helps improve:
- Wood pulp yield
- Fiber strength
- Overall pulp quality
Wastewater Treatment
Sodium Hydrosulfide is highly effective in removing heavy metals from industrial wastewater.
Benefits include:
- Converts dissolved metal ions into insoluble metal sulfides
- Enables easier removal through sedimentation
- Allows efficient removal via filtration
These benefits make Sodium Hydrosulfide an effective agent for heavy metal wastewater treatment.
Sodium Hydrosulfide Technical Specifications
Sodium Hydrosulfide
Sodium Hydrosulfide
| Product Name | Sodium Hydrosulfide / Sodium Hydrosulphide |
| Chemical Formula | NaHS |
| Purity | 70% Min |
| CAS Number | 16721-80-5 |
| Molecular Weight | 56.06 |
| Appearance | Yellow to pale brown flakes |
| Solubility | Easily soluble in water and alcohol |
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Odor |
Slight hydrogen sulfide odor |
Packaging and Supply Options
We provide flexible packaging solutions for global industrial buyers.
Standard Packaging
- 25 kg plastic woven bags with PE inner liner
- 1000 kg jumbo bulk bags
- Palletized packaging for container shipping
Storage & Safety Handling
⚠ Safety Notice: Sodium Hydrosulfide is a hazardous chemical and must be handled carefully.
When exposed to acids, it may release hydrogen sulfide (H₂S) gas, which is toxic.
- Store in a cool, dry, well-ventilated warehouse
- Keep away from acids, heat sources, and moisture
- Use proper personal protective equipment (PPE)including gloves, goggles, and respirators
- Always follow the MSDS safety guidelines before handling.
Why Choose Our Sodium Hydrosulfide
High purity 70% NaHS industrial-grade flakes
Optimized flake size for fast dissolution and efficient processing
Stable bulk supply for mining and industrial customers
Full COA (Certificate of Analysis) and MSDS support
Professional international logistics and export documentation
Our Sodium Hydrosulfide products are exported worldwide and widely used by mining companies, leather processing plants, pulp mills, and wastewater treatment facilities.
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Global Sodium Hydrosulfide Manufacturer & Exporter
We supply bulk Sodium Hydrosulfide to customers worldwide, including markets in:
- Asia
- Europe
- Middle East
- North America
- South America
- Africa
Our experienced export team ensures reliable supply, competitive pricing, and efficient international delivery.
Sodium Hydrosulfide FAQs
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We can provide:
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Moisture-proof packaging
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