Sodium Hydrosulfite, also known chemically as Sodium Dithionite, is a water-soluble white crystalline powder with strong reducing characteristics. Due to its superior reduction capabilities, it functions as a highly efficient decoloring, bleaching, and stabilizing chemical agent. It plays an indispensable role in massive industrial ecosystems worldwide, including textile manufacturing, pulp and paper processing, mineral flotation, and chemical synthesis.
However, the compound's reactivity poses complex packaging, logistics, and storage challenges. It is classified under UN 1384 as a Class 4.2 self-heating substance, demanding specialized manufacturing expertise, robust moisture-proof barriers, and meticulous supply chain systems to preserve purity and guarantee workplace safety. As leading manufacturers, we utilize advanced chemical engineering strategies to offer premium, optimized-grade Sodium Hydrosulfite that delivers consistent reduction yields even under demanding industrial conditions.
Understanding the core chemical synthesis paths is critical to sourcing high-purity Sodium Hydrosulfite. We employ state-of-the-art production routes to maximize efficiency and achieve ESG compliance.
This process reacts sodium formate with sulfur dioxide in an alcohol-water solution. It yields exceptionally high purity (up to 90% active content) with significantly reduced heavy metal trace elements, making it the preferred route for high-end applications like food-grade additives and pharmaceutical processing.
Historically common, this route involves reacting zinc dust with sulfur dioxide to form zinc dithionite, which is subsequently converted using sodium hydroxide. While cost-effective, it produces zinc-containing wastewater that presents significant environmental treatment challenges.
This process operates by utilizing sodium amalgam (produced via chlor-alkali electrolysis) to reduce sulfur dioxide. This method is heavily integrated into large-scale chlor-alkali production facilities to optimize upstream material efficiencies, though it requires strict mercury-free guarantees.
In major apparel manufacturing nations like Vietnam, Bangladesh, and Indonesia, Sodium Hydrosulfite is primary used to reduce water-insoluble indigo and vat dyes back to their soluble leuco forms. These regions suffer from high humidity, which accelerates product decomposition. Our customized moisture-sealed iron drums prevent degradation, ensuring stable dyeing processes and reducing batch defects.
North American and European paper mills demand high-efficiency bleaching agents to produce bright wood pulp with minimal environmental footprint. Our Sodium Hydrosulfite offers high reducing action, enabling paper manufacturers to meet strict local VOC emission targets and bleach pulp without compromising cellulose fiber strength.
In mineral flotation plants across Chile, Peru, and South Africa, Sodium Hydrosulfite acts as an effective depressant for zinc and copper minerals. Our bulk logistical solutions ensure consistent mineral extraction efficiency for mining companies operating in remote locations.
Municipalities and desalination plants utilize Sodium Hydrosulfite to remove free chlorine and reduce heavy metals (such as hexavalent chromium) in wastewater before environmental discharge, helping facilities comply with stringent environmental regulations.
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.
Global operations require reliable logistics, particularly when handling hazard-classified compounds like Sodium Hydrosulfite. We mitigate chemical transit risks and support punctual delivery schedules through a resilient supply network:
Since its establishment in 2006, the company has always adhered to the core corporate philosophy of "industrial, mining, and chemical raw material supply service provider", and is committed to becoming a leading global supplier of chemical raw materials. We adhere to the strategic orientation of "focusing on the development of quality chemical industry", which is not only reflected in our unremitting pursuit of product quality, but also in our continuous investment in technological innovation and service optimization. We are well aware that sustainable development is the source of vitality for enterprises, so the company attaches great importance to environmental protection and social responsibility, striving to promote economic development while safeguarding our shared blue sky and green space. We will continue to uphold our original intention, enhance our research and development capabilities, optimize supply chain management, and further enhance our core competitiveness. We look forward to working together with global partners to create a more brilliant tomorrow in the chemical industry!
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
Exporting to more than 100 countries and regions globally.
More than 20+ years of export experience, maintaining cooperative relations with more than 1,000 companies.
ISO Certification | SGS Certification | K-REACH Certification | FAMI-QS Certification.
We always provide reasonable prices based on customization and design requirements.
We have large warehouses in the port, which can realize fast transportation.
Efficient and professional sales team offer after-sale service.
Pulisi
