High-purity technical compounds manufactured under strict ISO and international standards for global industrial applications.
Sodium Hydrosulphide (NaHS) is an inorganic chemical compound of critical value across modern metallurgy, industrial processing, and chemical synthesis. Industrially produced primarily via the absorption of hydrogen sulfide gas in sodium hydroxide, NaHS serves as a highly active source of hydrosulfide sulfur ($HS^-$) in aqueous environments. In mineral flotation, it functions as a highly effective depressant for copper minerals and a primary sulfidizing agent for oxide ores, enabling maximum recoveries of valuable base and precious metals.
Beyond mining, NaHS acts as a foundational reactant in leather beamhouse processing for hair removal, reducing structural hide degradation and pollution footprint compared to legacy sulfidation agents. It also finds heavy utilization in dyestuffs manufacture, paper pulp processing (Kraft process), and organic chemical synthesis. Understanding the thermodynamic properties, purity constraints, and chemical stability of NaHS is critical for international supply chains demanding high performance, long shelf-life, and process optimization.
As leading chemical engineering exporters, Shandong Pulisi Chemical Co., Ltd. supplies premium-grade solid flakes (typically 70% min) and liquid concentrates optimized for custom industrial processes globally. All formulations undergo strict quality assessments to ensure minimized iron impurities and maximum active assay concentration.
Established in 2006 (Stock Code: 307785), Pulisi is a benchmark enterprise in global petrochemicals, mining chemicals, and advanced industrial reagents.
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 (CNPC) 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.
Pulisi manufactures and supplies a comprehensive portfolio of inorganic salts, carboxylic acid derivatives, and high-performance mining chemicals.
Providing critical technical support across multiple industrial sectors, helping our clients optimize yields and maintain high environmental compliance.
Sulfidation, hair removal in beamhouses, reduction of dye baths, and optimization of leather mechanical properties.
High-bioavailability calcium source, performance enhancers, preservatives, and safe feed additive processing.
Polycarboxylate plasticizers, early strength agents for concrete, concrete formulations, and high-durability coatings.
Depressants for molybdenum and copper flotation, high-activity sulfidizing agents, and beneficiation catalysts.
Drilling mud additives, fluid stabilizers, scale inhibitors, and catalytic chemical reagents for downstream refining.
Synthetically pure solvent products, microbial control reagents, and pharmaceutical grade precursors.
Precipitation of heavy metals from industrial effluent, pH buffering agents, and specialized anti-scalants.
Polymer precursors, cross-linking chemicals, chain extenders, and raw additives for plastics manufacturing.
Pulisi leads research into cleaner chemical synthesis, lower-emission processes, and custom molecular engineering.
In response to changing global carbon standards, Shandong Pulisi is actively refining its continuous manufacturing loops. Standard NaHS production creates trace hydrogen sulfide emission risks. Our upcoming synthesis roadmap integrates sealed, negative-pressure loop reactors equipped with automatic sulfur extraction. This technology significantly minimizes waste gas release, converting raw petrochemical sulfur byproducts into high-value flotation agents. This closed-loop design ensures our clients receive products with a minimized scope 3 carbon footprint.
Industrial flotation circuits are sensitive to iron contamination, which can inadvertently depress precious metals like gold or platinum group elements. Pulisi's current engineering focus targets a low-iron solid Sodium Hydrosulphide formulation (< 10 ppm iron content) utilizing specialized nickel-alloy crystallizers. By modifying standard cooling and crystallization rates, our process avoids the inclusion of sodium thiosulfate and sodium carbonate inside the solid matrix, providing a more stable, higher-activity flake suitable for the most sensitive metallurgical flowsheets.
Our industrial complexes utilize automated digital control systems (DCS) and direct hub logistics to stabilize chemical prices and delivery times.
Centred in Zibo, Shandong's historical petrochemical industrial zone, Pulisi leverages direct raw material integration. By sourcing high-quality sodium hydroxide ($NaOH$) and hydrogen sulfide ($H_2S$) streams directly from centralized chlor-alkali pipelines, we minimize freight costs and bypass supplier intermediaries. This integration protects our international buyers from price fluctuations during periods of energy cost instability.
Our packaging facilities utilize automated vacuum-sealing and nitrogen-purging lines. Because NaHS is highly hygroscopic and oxidizes rapidly upon contact with ambient air, nitrogen blanket packaging preserves active assay purity throughout transoceanic shipping. Furthermore, our strategically distributed port-side warehouses in Qingdao and Tianjin enable immediate loading upon order confirmation. For overland trade lanes, our dedicated rail-cargo protocols through Alashankou and Khorgos border ports deliver secure chemical consignments directly into Central Asian and Eastern European industrial centers with minimal transit delays.
Full compliance with international standards for chemical transport, environmental impacts, and quality management.
We deliver integrated logistics, reliable chemical purity, and comprehensive technical support globally.
Exporting high-quality chemicals to more than 100 countries and regions with zero major customs delays.
Over 20+ years of chemical export experience, maintaining deep cooperative relations with more than 1,000 global companies.
ISO Certification, SGS audits, K-REACH pre-registration, and FAMI-QS standard approvals for feed-grade chemicals.
Providing stable and competitive B2B contract pricing models based on custom design and purity specifications.
Large dedicated port-side chemical warehouses in Qingdao, Tianjin, and border ports to enable rapid dispatch.
Our efficient and professional technical sales team provides 24/7 post-delivery and application support.
Pulisi actively connects with trade associations and metallurgical enterprises at major worldwide trade fairs.
Key information on packaging standards, safety procedures, shipping, and chemical specifications.
Browse our broader range of industrial intermediates, solvents, and specialty chemicals.
Pulisi maintains strategic supply relationships with leading global chemical, mining, and manufacturing companies.
Pulisi