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Sodium Sulfide ($Na_2S$) at 60% concentration is a fundamental inorganic compound utilized across heavy industries. Commercially, it exists as crystalline flakes containing water of crystallization. The standard 60% content is dictated by active anhydrous $Na_2S$, with the remaining 40% comprising water molecules and negligible trace impurities.
For global buyers, the key differentiator when sourcing from top exporters lies in the iron ($Fe$) content. Yellow flakes indicate Low Iron Sodium Sulfide (typically containing $<30\text{ ppm}$ or $<15\text{ ppm}$ of $Fe$). Conversely, red or brown flakes denote Industrial Grade Sodium Sulfide, containing up to $1500\text{ ppm}$ of iron. Understanding these chemical configurations is critical for avoiding process failures in delicate tanning and textile operations.
| Chemical Parameter | Low-Iron (Yellow) | Industrial (Red) |
|---|---|---|
| Active $Na_2S$ | ≥ 60.0% | ≥ 60.0% |
| Iron ($Fe$) Content | ≤ 30 ppm (or ≤ 10 ppm) | ≤ 1500 ppm |
| Sodium Carbonate ($Na_2CO_3$) | ≤ 2.0% | ≤ 5.0% |
| Water Insolubles | ≤ 0.2% | ≤ 0.4% |
How macroeconomic pressures, environmental compliance, and transport regulations shape the logistics of Sodium Sulfide.
Sourcing chemical materials requires alignment with strict global safety protocols. Quality systems such as REACH, K-REACH, and FAMI-QS govern chemical handling to guarantee occupational safety and ecological protection.
Sodium Sulfide is classified under UN 1849, Class 8 (Corrosive substances). Transport requires close proximity to modern maritime ports (Qingdao, Tianjin) and land border ports (Alashankou, Khorgos) to ensure secure logistics.
Because of its highly hygroscopic nature, Sodium Sulfide 60% must be stored in airtight, double-layered PP bags with inner PE liners. Preventing atmospheric exposure prevents oxidation to thiosulfate and hydrogen sulfide outgassing.
Established in 2006 (Stock Code: 307785), Shandong Pulisi Chemical Co., Ltd. has developed into a dominant force in petrochemicals, mining chemicals, feed chemicals, and pharmaceutical raw materials. Over the last two decades, the company has forged long-term, stable partnerships with Fortune Global 500 giants, including China National Petroleum Corporation (CNPC) and Saint-Gobain. Operating on the core values of "Customer First, Rapid Response; Striving as the Foundation, Efficient Collaboration; Integrity and Uprightness, Agile Adaptation," Pulisi ensures compliance, technical precision, and stability.
Our state-of-the-art warehouses are strategically located near Qingdao Port, Tianjin Port, and major inland border ports such as Alashankou and Khorgos in Xinjiang. These configurations ensure swift domestic transport and secure export routes, regardless of your global operational hub.
* Strict Statement: Shandong Pulisi has not established branches outside of Shandong Province. Any acts of impersonation will be prosecuted to the full extent of the law.
Recognized as an Alibaba Demonstration Base, Foreign-Oriented Economic Enterprise, and a trusted public entity.
A deep look into how Sodium Sulfide 60% functions as an indispensable catalyst in global processes.
Used as a sulfidizing agent for oxide ores (copper, lead, zinc) to prepare the mineral surfaces for collector adsorption. It serves as a selective depressant for iron sulfide minerals in complex polymetallic separation.
Acts as the active chemical in the liming/dehairing stage. High-purity low-iron flakes are crucial for luxury leather production to prevent unsightly iron-tan stains on top-grain hides.
Used to reduce insoluble sulfur dyes into their soluble leuco forms during cotton fabric coloration, maintaining high chemical colorfastness and dye uniformity.
Utilized in municipal and factory effluent systems to precipitate toxic heavy metals (like mercury, lead, and cadmium) as extremely stable and insoluble metal sulfides.
Premium grade minerals, salts, and organic compounds directly manufactured and exported from our facilities.
Why Fortune Global 500 chemical companies trust Shandong Pulisi Chemical as their premier partner.
Robust trading channels reaching over 100 countries and regions globally. Active rail routes to Central Asia and ocean transport to EU/US.
More than two decades of deep industry involvement, keeping stable partnerships with over 1000 multinational operations.
Fully backed by ISO 9001:2015, SGS inspections, K-REACH and FAMI-QS compliance to satisfy strict health regulations.
Extensive warehousing footprints in major shipping corridors for direct, rapid, and low-cost ocean transport.
Proof of our commitment to transparency, technical excellence, and chemical compliance.
Building strong international partnerships through regular face-to-face exchanges at trade events.
Maintaining stable cooperative networks with some of the world's most trusted brands.
The global chemical sector is shifting toward energy-efficient, low-carbon technologies. Traditionally, Sodium Sulfide manufacturing relies on coal reduction of sodium sulfate ($Na_2SO_4 + 2C \rightarrow Na_2S + 2CO_2$), which emits significant amounts of greenhouse gases.
Our forward-looking development roadmap centers on migrating to catalytic gas-phase reduction systems. By utilizing hydrogen or carbon monoxide as reducing agents, we can drastically lower emissions. Additionally, integrated closed-loop sulfur recovery systems capture trace hydrogen sulfide ($H_2S$) gas, converting it back into elemental sulfur or hydrosulfide derivatives to prevent waste.
Comprehensive guide to chemical specifications, order logistics, payment models, and factory inspections.
Yes, we offer custom packaging and branding options. You can send your logo specifications and packaging requirements to our design team, and we will prepare a layout proof for your review before production begins.
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.
We always put our customers' interests first. Prices are negotiable under different conditions, and we guarantee that you will get the most competitive price.
Yes, we provide free samples for quality evaluation and lab testing. Buyers only need to cover the international shipping and handling charges.
Yes, of course! We have been specializing in this field for many years and many of our customers have made deals with me because we can deliver on time and guarantee top quality goods!
We support various payment terms, including T/T, L/C, D/P, and O/A. Third-party inspections and payments through certified trade agents are also accepted.
Of course, you are very welcome to visit our company in Zibo, China. (1.5 hours drive from Jinan).
You can send your specific chemical requirements directly to our sales representatives. We will guide you through the process, including sample approval, packaging details, and logistics setup.
High iron concentrations in industrial red flakes can react with tannins in leather processing or organic molecules in dye formulations, causing dark staining. Low-iron yellow flakes (Fe < 30ppm) prevent this, ensuring clean leather and vibrant textiles.
Further industrial reagents, catalysts, and additives engineered for consistent performance.
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