Sodium Sulphide (Na₂S), primarily traded in its 60% hydrated crystal form as yellow flakes, is a fundamental inorganic compound essential across key industrial sectors. The chemical composition is highly active, functioning as a powerful reducing agent, sulfiding agent, and precipitating agent. While historically available in red flakes due to higher iron impurities, modern high-tech processes focus on producing "Yellow Flakes."
The yellow coloration indicates a significantly lower iron (Fe) concentration—typically below 30 ppm, and often reaching under 10 ppm for specialty applications. This reduction in iron contamination is critical for textile processing, paper manufacturing, and leather tanning, where metal impurities can cause severe product staining, discoloration, or degradation.
Using low-iron yellow flakes prevents iron-tannin reactions in leather processing that create unsightly dark marks. In textile dyeing, it ensures color uniformity by preventing unwanted chemical interference during the sulfur-dye fixing process.
The global market for Sodium Sulphide is driven by rising mineral beneficiation activities and demand in the fashion and construction sectors. Currently, China stands as the primary global hub for production, offering significant cost efficiencies through optimized raw material access (primarily coal and sodium sulfate). This structural efficiency allows manufacturers like Shandong Pulisi Chemical to provide stable pricing models, insulated from regional energy shocks.
Procurement professionals are increasingly shifting focus from spot-market purchases to long-term supply partnerships. By ensuring stable delivery schedules, companies prevent production stoppages, especially in mineral extraction sectors like copper mining where Sodium Sulphide is crucial.
| Parameters | Standard Grade Specifications | Premium Low-Iron Grade | Testing Methodology |
|---|---|---|---|
| Sodium Sulphide (Na₂S) | ≥ 60.0% | ≥ 60.5% | GB/T 10500-2009 |
| Iron (Fe) Content | ≤ 30 ppm | ≤ 10 ppm | AAS (Atomic Absorption) |
| Sodium Carbonate (Na₂CO₃) | ≤ 2.0% | ≤ 1.5% | Volumetric Analysis |
| Water Insolubles | ≤ 0.20% | ≤ 0.10% | Gravimetric Method |
| Physical Appearance | Thin Yellow Flakes | Bright Yellow Flakes | Visual Quality Check |
Sodium Sulphide 60% is used across various high-value industries:
Serves as a sulfidizing agent in froth flotation of oxide ores, particularly for copper, lead, and zinc, transforming them to facilitate recovery.
Acts as an unhairing agent. It hydrolyzes keratin proteins in raw hides, ensuring rapid and safe hair removal without damaging the hide.
Used as a reducing agent in the application of sulfur dyes, rendering the dyes soluble so they can bind effectively to cotton fibers.
Precipitates heavy metals from industrial wastewater, reacting with dissolved metals to form insoluble sulfides for easy filtration.
Assists in the Kraft process by selectively dissolving lignin from wood chips, improving the strength and yield of the resulting pulp.
Used as a primary source of sulfur in synthesizing organic chemicals, including polysulfide elastomers and engineering plastics.
Due to its corrosive nature (Class 8 Hazardous Substance, UN 1849), shipping Sodium Sulphide requires specialized packaging and logistical expertise. Shandong Pulisi Chemical has built a robust supply chain network utilizing key ports:
Our warehouses are systematically managed to allow fast consolidation, customs clearance, and loading, ensuring lead times are kept to a minimum.
Shandong Pulisi Chemical Co., Ltd. was established in 2006 (Stock Code: 307785). The company focuses on petrochemicals, mining chemicals, feed chemicals, and pharmaceutical chemicals. At present, the company has established long-term and stable partnerships with Fortune Global 500 companies such as China National Petroleum Corporation and Saint-Gobain. We always take customer demand as the core orientation and provide tailored solutions to help customers strengthen their market competitiveness.
The company has passed ISO9001:2015 Quality Management System Certification and German BV Certification, and has been awarded multiple honors such as Foreign-Oriented Economic Enterprise, Alibaba Demonstration Base, and Contribution Enterprise. In 2023, the company successfully went public with stock code: 307785.
The company upholds the corporate culture philosophy of "Customer First, Rapid Response; Striving as the Foundation, Efficient Collaboration; Integrity and Uprightness, Agile Adaptation." We focus on providing compliant and high-quality products and supporting services, and are committed to becoming a long-term and stable partner for customers.
Meanwhile, the company has established mature warehousing and distribution systems at key logistics hubs, including Qingdao Port, Tianjin Port, and Xinjiang border ports (Alashankou, Khorgos). We are able to provide flexible supply solutions according to customer needs to ensure timely order delivery. No matter where customers are located, Shandong Pulisi Chemical will safeguard their business development with professional service systems and efficient response capabilities.
We always adhere to the mission of "creating value for customers and making their products better," based on reputation and guaranteed by service. We look forward to strengthening cooperation with partners to create a future together!
Strict Statement: Shandong pulisi has not established branches outside of Shandong Province. If there is any act of impersonating Shandong Pulisi, our company will reserve the right to pursue legal responsibilities.
Exporting to more than 100 countries and regions globally.
Over 20+ years of export experience, maintaining active partnerships with over 1,000 global entities.
ISO Certification, SGS certification, K-REACH Registration, FAMI-QS Certification.
We always provide competitive pricing based on packaging requirements and scale.
Large warehouses at key shipping ports support rapid transport logistics.
Efficient and professional sales teams offer direct post-sale technical support.
Since our founding in 2006, Shandong Pulisi Chemical has maintained a focused presence in major global chemical and mining trade forums. We participate in international platforms to present our sustainable production strategies and trace logistics updates directly to our partners.
Pulisi
