Explore our top-tier industrial formulations manufactured under rigorous ISO standards for global export.
Sodium Sulphide (Na2S) 60% is a vital inorganic salt compound widely utilized in mining beneficiation, leather tanning, paper pulp manufacturing, and textile color reduction. Primarily traded globally in flake form, the chemical operates as a highly active reducing agent, precipitant, and depilatory solution. Sourcing Na2S of optimal purity and consistent iron content is crucial for downstream productivity, quality assurance, and plant safety.
For international buyers and processing facilities, specifying the right iron concentration defines the product's grade. While the standard red flake variety typically contains up to 1500 ppm of iron, the low-iron yellow flake variety maintains a strict cap (often < 10 ppm, < 30 ppm, or < 150 ppm). Iron contaminants react with organic materials and minerals to generate insoluble iron sulfides, which cause staining in leather processing and interfere with chemical synthesis. Choosing a verified OEM exporter like Shandong Pulisi Chemical Co., Ltd. guarantees tailored formulations matching specific process limits.
In mineral flotation, Sodium Sulphide 60% functions as a critical sulfidizing modifier for oxidized copper, lead, and zinc ores. Through chemical adsorption, the sulphide ions transform the surface of oxidized minerals (such as malachite or cerussite) into a thin sulphide film. This dynamic alteration enables efficient xanthate collector adsorption, drastically increasing recovery yields from complex or depleted deposits. The precision of the 60% concentration ensures stable hydration states, preventing the rapid weathering or degradation common in substandard flakes.
Designed exclusively for high-grade leather depilation and advanced dye synthesis where iron residue is strictly prohibited to prevent product staining.
Mainly used in mineral flotation, wastewater heavy metal precipitation, and industrial pulp bleaching where standard iron thresholds are acceptable.
We manufacture according to rigorous quality protocols, ensuring chemical purity and packaging integrity for transit.
| Analytical Parameter | High-Purity Low-Iron Grade | Standard Industrial Grade | Testing Standards |
|---|---|---|---|
| Sodium Sulphide (Na2S) | ≥ 60.0% min | ≥ 60.0% min | GB/T 10500-2009 |
| Iron (Fe) Content | ≤ 10 ppm / 30 ppm max | ≤ 1500 ppm max | Spectrophotometry / ICP-OES |
| Sodium Carbonate (Na2CO3) | ≤ 2.0% max | ≤ 5.0% max | Acid-base Titration |
| Water Insoluble Residues | ≤ 0.2% max | ≤ 0.4% max | Gravimetric Method |
| Appearance | Thin Yellow Flakes | Standard Red Flakes | Visual Assessment |
Established in 2006 (Stock Code: 307785), Shandong Pulisi Chemical Co., Ltd. is a major manufacturer of petrochemicals, mining chemicals, feed chemicals, and pharmaceutical raw materials. We build long-term, stable relationships with Fortune Global 500 enterprises, including China National Petroleum Corporation (CNPC) and Saint-Gobain, by prioritizing customer demand and providing tailored solutions that strengthen our partners' market competitiveness.
We hold ISO9001:2015 Quality Management System Certification and German BV Certification. Our accolades include Foreign-Oriented Economic Enterprise, Alibaba Demonstration Base, and Contribution Enterprise. In 2023, the company went public with stock code 307785.
Pulisi Chemical manages warehousing and distribution networks at key logistics hubs, including Qingdao Port, Tianjin Port, and western land border ports (Alashankou, Khorgos). This infrastructure allows us to offer flexible, fast supply solutions that ensure timely order delivery worldwide.
Strict Statement: Shandong Pulisi Chemical Co., Ltd. has not established any branch offices outside of Shandong Province. If there is any act of impersonating Shandong Pulisi, our company reserves the right to pursue legal responsibilities.
Our adherence to international regulatory standards is backed by industry honors and independent certifications.
We maintain full regulatory compliance, including ISO 9001:2015, FAMI-QS, Halal, Kosher, and K-REACH, backed by verified SGS testing.
ISO Certificate (EN/CN)
FAMI-QS Certificate
Kosher Certificate
Halal Certificate
ISO 9001 Quality System
Acetic Acid SGS Report
Calcium Formate SGS Report
Formic Acid SGS Report
Quality Verification Badge
Oxalic Acid SGS Report
Sodium Formate SGS Report
Sodium Hydrosulfide SGS Report
Chemical Component Testing
The global Sodium Sulphide market is shifting due to dynamic regulatory environments, volatile raw material costs, and strict environmental mandates. As a compound with high alkalinity and reducing power, Na2S is subject to scrutiny regarding transport safety and wastewater management. OEM exporters must provide technical value and compliance documentation alongside the physical product.
The global leather processing and luxury goods industries are reducing tolerances for process defects. Standard sodium sulphide with high iron content leaves dark iron sulfide stains on hides, affecting the quality of premium leathers. Consequently, demand is moving toward low-iron sodium sulphide (Fe < 10 ppm - 30 ppm). Clean chemistry practices also favor yellow flakes over red flakes in premium dye synthesis, as low-iron variants prevent side reactions that dull color brightness.
Mineral processing facilities face challenging copper, lead, and zinc ore profiles. With dropping ore grades, flotation circuits require precise dosages of sulfidizing agents. High-quality Sodium Sulphide 60% optimizes sulfidization without over-depressing targeted copper-activated zinc minerals. Operators are seeking suppliers that offer stable hydration states and packaging that resists oxidation to preserve chemical potency over long transit times.
Recent supply chain volatility highlights the importance of reliable supplier infrastructure. Standard Class 8 dangerous goods transport (UN 1849) requires specialized freight handling and port coordination. Shandong Pulisi Chemical maintains warehousing at major transit hubs—including Qingdao Port, Tianjin Port, and key border ports like Alashankou and Khorgos. This network ensures reliable delivery to mining operations in Central Asia and processing hubs in Southeast Asia, Europe, and the Americas.
Shandong Pulisi Chemical regularly participates in key international chemical and mining trade exhibitions, strengthening partnerships in more than 100 countries.
Premium performance chemicals for diverse industrial, agricultural, and mineral processing applications.
Our chemical portfolio provides critical raw materials for a wide range of industrial applications.
Sourcing chemical raw materials from China requires verifying supplier capacity, quality control, and logistics infrastructure. Shandong Pulisi Chemical provides reliability across the supply chain, from bulk production to customs clearance.
Industrial chemistry is modernizing to meet green initiatives and process-efficiency requirements. Pulisi Chemical is aligning its production processes with environmental standards through several key initiatives:
Our engineering focus is on optimizing carbothermic reduction efficiency ($Na_2SO_4 + 2C \rightarrow Na_2S + 2CO_2$). We use high-efficiency kiln systems and exhaust gas filtration to capture greenhouse emissions and sulphur dioxide byproducts, recycling thermal energy back into crystallization stages to reduce our environmental footprint.
Worker health and safety is a priority in processing facilities. Traditional thin flakes break down into fine dust during packaging and transport, presenting inhalation hazards. We are developing flake formulations with higher physical density and improved resistance to mechanical breakdown, reducing dust generation during automatic unloading and feed operations.
Sodium sulphide is highly hygroscopic and susceptible to ambient oxidation. To extend product shelf life and preserve chemical activity, we are updating our packaging options. New offerings include multilayer polymer bags with an inner aluminum vapor barrier and nitrogen-flushed sealing. This packaging keeps the flakes dry and active, even during extended storage in tropical and high-humidity mining environments.
Answers to common inquiries regarding sourcing, quality control, shipping logistics, and compliance.
We work with major global enterprises and chemical distributors to ensure stable supply chains.
We export high-performance organic and inorganic compounds worldwide, backed by technical support.
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