Unlocking the industrial significance of dry-form Sodium Sulfide in modern chemistry and manufacturing processes.
Anhydrous Sodium Sulfide (Na2S) represents the pinnacle of concentration optimization, boasting active sulfide levels up to 98%+. Unlike traditional yellow flakes (which contain approximately 40% water content), the anhydrous variant significantly reduces shipping weights, minimizes crystallization challenges in low temperatures, and prevents hydration-induced container decay.
Classified under UN 1385 as a dangerous good (Class 4.2 self-heating substance), exporting anhydrous sodium sulfide requires rigorous adherence to international maritime guidelines. Dynamic trading centers are constantly demanding advanced packaging technologies, such as nitrogen-purged hermetically sealed containers, to prevent oxidation during intercontinental transit.
As the key pre-polymerizing building block for Polyphenylene Sulfide (PPS) high-performance plastics, high-purity anhydrous sodium sulfide has emerged as a bottleneck material in the aerospace and automotive lightweighting sectors. Factories are shifting towards custom synthesis to control ppm levels of impurities like iron and carbonate.
| Parameter Specifications | Industrial Grade Anhydrous Na2S | Standard Sodium Sulfide Flakes (60%) | Testing Methodology |
|---|---|---|---|
| Sodium Sulfide Content (Na2S) | ≥ 98.0% | ≥ 60.0% | Acid-base Titration |
| Iron Content (Fe) | ≤ 10 - 30 ppm | ≤ 1500 ppm | AAS / ICP-OES |
| Sodium Carbonate (Na2CO3) | ≤ 1.5% | ≤ 5.0% | Gravimetric Analysis |
| Water of Crystallization | < 1.5% | ~ 38.0% - 40.0% | Loss on Drying |
How Shandong Pulisi Chemical coordinates raw material access and regional infrastructure to deliver absolute reliability.
Based in Shandong Province—the heartland of Chinese petrochemical and inorganic synthesis—Shandong Pulisi enjoys direct pipeline access to high-purity sulfur feedstocks and sodium precursors. This eliminates regional transport costs and mitigates volatility in raw material pricing.
Our contracted manufacturing plants utilize eco-friendly, energy-efficient coal-reduction and high-temperature vacuum crystallization technologies. This ensures high-yield anhydrous conversion while capturing exhaust sulfur gases to satisfy strict environmental mandates.
We maintain dedicated hazardous chemicals warehousing at both Qingdao Port and Tianjin Port. By stockpiling high-turnover materials at port-adjacent zones, we reduce lead times to Southeast Asian and European destinations by up to 10 days.
Leveraging China's Belt and Road routes, we facilitate overland bulk shipping through Xinjiang border ports (Alashankou and Khorgos), offering uninterrupted rail transport directly to Central Asia and Eastern Europe.
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.
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 adherence to strict global quality, safety, and supply chain management standards ensures peace of mind for buyers.
From mineral beneficiation in South America to precision leather processing in Europe—how our chemical agents perform.
Chemicals For Textile, Printing & Dyeing & Leather
Agricultural Chemicals, Food And Feed Additives
Chemicals For Construction And Coatings
Chemicals For Mining & Flotation
Chemicals For Oil Drilling
Disinfectant And Solvent Chemicals
Chemicals For Water Treatment
Plastic Raw Material (PPS Polymerization)
In gold, copper, and nickel mining sectors across Australia and Chile, Anhydrous Sodium Sulfide functions as a highly effective depressant agent. It sulfidizes oxidized non-ferrous metal ores, creating an artificial sulfide film on mineral surfaces to selectively separate copper minerals from pyrite during flotation. By deploying dry form Na2S, remote mines minimize transport-related water mass while achieving reliable separation yields.
For high-end European tanneries, controlling the depilation process is key to leather softness and integrity. Sodium sulfide breaks the disulfide bonds in keratin, allowing hair removal from raw hides. High-purity anhydrous sodium sulfide avoids iron contaminants that otherwise cause staining, assuring uniform shade consistency in subsequent dyeing steps.
Balancing supply chain resiliency, purity standards, and chemical hazards mitigation.
Large-scale chemical buyers rarely buy off-the-shelf. As a premier ODM provider, our factory adapts concentrations, physical pellet sizing, and low-iron compounds tailored to proprietary customer recipes. This prevents unwanted reactions in downstream chemical synthesis.
Oxygen and moisture are the natural enemies of sodium sulfide, causing oxidation to sodium thiosulfate and sulfate. We utilize double-layer vacuum packaging filled with dry nitrogen in reinforced steel drums, protecting the chemical state over journeys exceeding 60 days at sea.
Sourcing chemical compounds requires extensive validation paperwork. Shandong Pulisi manages comprehensive safety and environmental certification profiles, including REACH dossiers, FAMI-QS documentation, and SDS reports compliant with global GHS standards.
Connecting face-to-face with buyers across chemical expos worldwide, showcasing Shandong Pulisi's technological growth.
We work with international businesses and leaders to deliver top-tier materials worldwide.
Strategic pathways towards green synthesis, ultra-pure electronics grade chemicals, and sustainable supply loops.
Emerging chemical demands highlight the shift towards high-purity crystalline formats. Specifically, the production of high-grade engineering polymers (like PPS plastics) requires anhydrous sodium sulfide with iron content under 10 ppm. Chinese factories are continually optimizing downstream filtration systems to meet these strict specifications.
Heavy energy use during the reduction phase of sodium sulfate represents an optimization challenge. Production setups are beginning to use waste heat capture and integrated hydrogen energy inputs to reduce overall carbon footprints, matching the procurement requirements of global buyers.
With maritime hazardous goods monitoring becoming stricter, suppliers are incorporating chemical IoT tags. These sensors track temperature fluctuations and humidity spikes within containers in real-time, allowing transport lines to detect seal failures early.
Our core structural advantages in serving international clients with high-end raw material logistics.
Exporting to more than 100 countries and regions with fully integrated border shipping protocols.
More than 20+ years of export experience, maintaining close partnerships with over 1,000 global companies.
ISO Certification | SGS Certification | K-REACH Certification | FAMI-QS Certification.
We always provide reasonable prices based on customization and client design requirements.
We have access to large warehouses at primary shipping ports, guaranteeing rapid transport response.
Our efficient and professional sales team provides continuous communication and post-delivery support.
Everything you need to know about sourcing, importing, and customizing Anhydrous Sodium Sulfide.
Pulisi
