Explore our diverse range of certified industrial compounds sourced and shipped globally under strict quality control standards.
Understanding the Chemistry, Specifications, and Quality Indicators that Define Modern Industrial Standards.
Sodium Sulphide (Na₂S) 60% Red Flakes represent one of the most vital heavy-industrial chemicals utilized across multiple chemical process industries (CPI). Synthesized through the high-temperature carbothermic reduction of sodium sulfate (salt cake) or as a by-product of petrochemical refining processes, its chemical purity and concentration govern its performance as a reducing agent, sulfidizing agent, and chemical depilatory.
“The color differentiation of Sodium Sulphide flakes is primarily determined by trace transition metal impurities—predominantly iron (Fe). While 'Yellow Flakes' signify an iron concentration of under 30 ppm (typically targeted for precision textiles and paper finishing), 'Red Flakes' contain iron concentrations ranging up to 1500 ppm. This makes red flakes the cost-effective, high-efficiency choice for heavy mining beneficiation and raw hide processing where trace iron does not impact final material characteristics.”
For chemical procurement officers, choosing a supplier requires strict verification of safety and assay limits. As a public-listed manufacturer (Stock Code: 307785), Shandong Pulisi Chemical Co., Ltd. supplies high-precision OEM outputs meeting standard global tolerance matrices:
| Analytical Parameter | Standard Specification (Red Flakes) | Test Methodology (Typical) |
|---|---|---|
| Sodium Sulphide (Na₂S) Purity | ≥ 60.0% Min | Acid-base Iodometric Titration |
| Iron (Fe) Content | ≤ 1500 ppm Max (typically 1200 ppm) | Spectrophotometry (AAS) |
| Sodium Carbonate (Na₂CO₃) | ≤ 2.0% Max | Gravimetric Estimation |
| Water Insolubles | ≤ 0.2% Max | Quantitative Filtration |
| Physical Form | Thin, reddish-brown flakes | Visual Inspection |
By executing strictly monitored synthesis pathways and leveraging localized coal-to-chemical synthesis advantages, our factories yield flakes with optimal structural density, reducing dusting hazards while maintaining highly predictable dissolving rates in industrial dissolving tanks.
From deep-earth mineral recovery to high-end leather tanning—the critical roles of Na₂S in industrial transformation.
In South American and African mining corridors, Sodium Sulphide 60% Red Flakes act as a powerful sulfidizing agent. It coats oxidized base-metal minerals (like malachite or cerussite), rendering them responsive to collector molecules (like xanthates) during froth flotation, while serving as a crucial depressant for pyrite in complex sulfide systems.
In global leather hubs (Italy, Bangladesh, Brazil), Na₂S is key in beamhouse operations. It hydrolyzes disulfide bonds in keratin, allowing clean hair removal from animal hides. This process opens the fiber bundle structures, preparing the collagen matrices for subsequent chrome tanning steps.
Industrial wastewater containing heavy metals (such as copper, mercury, cadmium, and lead) cannot be safely discharged. Na₂S provides S²⁻ ions that form highly insoluble metal sulfide precipitates. These precipitates are easily filtered out, ensuring compliance with strict environmental regulations.
Within the textile industry, particularly in South and Southeast Asia, Sodium Sulphide serves as the reducing agent of choice for applying sulfur dyes. It reduces insoluble dyes into water-soluble leuco compounds, which can penetrate cotton fibers before being oxidized back into their fast, insoluble forms. Concurrently, in pulp factories utilizing the Kraft cycle, Na₂S is a core component of white liquor, acting alongside sodium hydroxide to selectively break down lignin bonds in wood chips while preserving cellulose yield.
How a publicly listed enterprise secures pricing stability, safety compliance, and global delivery times.
Global raw material procurement requires managing supply chain disruptions, energy costs, and maritime safety regulations. Shandong Pulisi Chemical Co., Ltd. mitigates these risks through integration at the chemical source and strategic warehouse hubs.
By positioning warehouses near major logistics centers (Qingdao Port, Tianjin Port) and overland rail gateways (Alashankou, Khorgos), we reduce transit times and eliminate long-distance drayage delays before vessel loading.
Sodium Sulphide is classified under UN 1849 as Class 8 Corrosive substances (Packaging Group II). We pack our products in moisture-barrier PP woven bags with PE inner liners (25kg or 1000kg jumbo configurations) and secure them in ocean containers to prevent ambient hydration.
Protecting your operations with full environmental compliance and certification assurance.
In modern chemical distribution, product delivery must be accompanied by comprehensive regulatory documentation. Under the European Union REACH framework and Korean K-REACH regulations, import clearance requires matching registration tokens. Shandong Pulisi Chemical Co., Ltd. provides complete regulatory documentation for smooth border clearance, saving customers from cargo detentions and heavy customs fines.
For feed additives and specialized processing, our supply chain is certified under the FAMI-QS Code of Practice, alongside Kosher and Halal validations. This allows food-processing-adjacent chemical processes to meet audit requirements without complications. Our manufacturing plants undergo regular third-party facility audits conducted by German BV (Bureau Veritas), verifying that our actual environmental management, labor safety, and output capacities match our public statements.
Versatile chemical compounds designed to deliver performance in demanding manufacturing conditions.
Chemicals For Textile, Printing & Dyeing & Leather
Agricultural Chemicals, Food And Feed Additives
Chemicals For Construction And Coatings
Chemicals For Mining
Chemicals For Oil Drilling
Disinfectant And Solvent Chemicals
Chemicals For Water Treatment
Plastic Raw Material
A Publicly Traded Industrial Leader (Stock Code: 307785) Committed to Long-Term Global Partnerships.
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.)
Our commitment to compliance, transparency, and operational excellence recognized by industrial standards.
Rigorous test clearances validating chemical compliance for seamless international customs processing.
Our journey of developing chemical value across global borders, establishing connections with over 100 countries.
A specialized range of chemical compounds formulated to meet strict industrial specifications.
What differentiates Shandong Pulisi in the international chemical landscape.
Exporting to more than 100 countries and regions, securing critical channels in Europe, the Americas, and Asia.
More than 20+ years of export experience, maintaining stable cooperative relations with more than 1,000 global partners.
Full certification compliance including ISO 9001, SGS, K-REACH, and FAMI-QS to meet diverse safety requirements.
We always provide competitive, reasonable pricing structures based on customization, packaging, and logistical requirements.
Strategic warehousing systems situated in key domestic loading ports, allowing rapid local rail and ocean dispatch.
Our responsive sales and support teams handle pre-shipment testing, compliance filings, and after-sale support.
Building long-term cooperation with leading global enterprises and Fortune 500 corporations.
Clear responses to technical, operational, and commercial inquiries about our sourcing process.
Is it possible to print our logo on the product packaging?
Of course you can. Just send us your logo design and dimensions. We provide custom labeling and packaging modifications (OEM) according to your local market requirements.
Do you accept small orders?
If you are a small retailer or entrepreneur, we would absolutely love to grow with you. We look forward to building a long term relationship with you. Please contact our sales team to discuss initial order requirements.
What is the price? Can it be cheaper?
We always put our customers' interests first. Prices are negotiable under different conditions, and we guarantee that you will get a competitive price based on raw material costs and order volume.
Do you provide free samples?
Yes, we provide free samples (postage/shipping fees generally covered by the buyer). Please send your delivery details and specific chemical parameters to our sales office.
Can you deliver on time?
Yes, of course! We have been specializing in this field for many years. Our warehousing centers in Qingdao and Tianjin ports enable us to meet shipping deadlines and minimize transit delays.
What are your payment terms? Do you accept third party payment?
We accept T/T, L/C, D/P, and O/A. Third-party transaction clearances are subject to verification checkups in compliance with international banking trade standards.
Can I visit your factory in China?
Of course, you are very welcome to visit our company in Zibo, China. (Located approximately 1.5 hours' drive from Jinan airport). Please schedule your visit with our team beforehand so we can prepare your site pass.
How can I place an order?
You can send an inquiry directly to our sales representative for detailed order information. We will guide you through the process, from chemical specification confirmation to logistics arrangement.
What is the difference between Red Flakes and Yellow Flakes in Sodium Sulphide?
The difference lies in the iron (Fe) impurity concentration. Yellow Flakes have low iron content (under 30 ppm) and are used in textile dyeing, fine paper, and cosmetics. Red Flakes contain up to 1500 ppm of iron and are suitable for mining flotation, wastewater treatment, and leather processing.
How do you manage the hazard and storage safety of Sodium Sulphide 60% Flakes?
Sodium Sulphide is classified under UN 1849 as Class 8 corrosive. It must be stored in dry, well-ventilated spaces away from acids, oxidizers, and moisture, as contact with acids releases toxic hydrogen sulfide gas. We use sealed double-layer packaging to prevent air exposure.
Providing compliant and high-quality products to support your business development.
Pulisi