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Sodium Sulfite Anhydrous (CAS No. 7757-83-7) is a white crystalline powder widely deployed as a reducing agent, oxygen scavenger, and preservative. Under modern hazard communication protocols, a comprehensive and precise Safety Data Sheet (SDS) is vital. A standard GHS-compliant SDS for Sodium Sulfite Anhydrous lists detailed toxicity indicators, handling procedures, and exposure thresholds to ensure high-level workplace safety and seamless environmental compliance.
Different jurisdictions (US OSHA, European REACH, China GB) require specific compliance parameters on Section 2 (Hazard Identification) and Section 3 (Composition/Information on Ingredients) of the SDS. Our technical team works continuously with global verification bodies to keep our documentation updated. This shields procurement divisions from regulatory friction during import operations and safety auditing processes.
The SDS outlines critical thermal stability profiles. While Sodium Sulfite Anhydrous is stable under normal conditions, exposure to acids releases toxic sulfur dioxide gas (SO₂). It also reacts slowly with moisture in air, oxidizing into sodium sulfate. Our specialized SDS outlines safe containment rules, protective equipment (PPE) recommendations, and emergency spill action protocols for hazardous industrial settings.
In the current chemical market, securing a stable and highly pure supply of Sodium Sulfite Anhydrous goes beyond evaluating FOB prices. Enterprise-level chemical sourcing managers face volatile maritime rates, tight ecological regulations, and the critical need for absolute batch consistency. Our production facility bridges these gaps by offering standardized, certifiable raw materials alongside transparent trade documentation.
Whether used in municipal water purification plants to scrub residual chlorine, or in gold flotation processes to repress zinc blende, performance is directly tied to chemical stability. Shandong Pulisi Chemical provides comprehensive solutions designed for different industrial sectors:
Each delivery matches the targeted physical and chemical requirements, supported by a batch-specific Certificate of Analysis (COA) and a multi-language SDS.
Founded in 2006 (Stock Code: 307785), Shandong Pulisi Chemical Co., Ltd. is a major chemical manufacturer specializing in petrochemicals, mining reagents, feed additives, and specialty industrial chemicals. We have built reliable partnerships with Fortune Global 500 companies, including China National Petroleum Corporation (CNPC) and Saint-Gobain, by prioritizing chemical consistency and responsive logistics.
We are certified under the ISO9001:2015 Quality Management System and carry official German BV accreditation. Recognized as an Alibaba Demonstration Base and a leading Foreign-Oriented Economic Enterprise, Pulisi went public in 2023 under stock code 307785, cementing our path of transparent growth and financial stability.
Our operation is anchored around "Customer First, Rapid Response; Striving as the Foundation, Efficient Collaboration; Integrity and Uprightness, Agile Adaptation." With key regional storage terminals situated at Qingdao Port, Tianjin Port, and various Xinjiang border hubs (Alashankou, Khorgos), we provide streamlined deliveries and reliable lead times worldwide.
In modern chemical processing, the synthesis of Sodium Sulfite Anhydrous is undergoing a push toward energy efficiency and green chemistry. Shandong Pulisi is upgrading its manufacturing processes to align with global carbon reduction targets and zero-liquid-discharge (ZLD) requirements.
Our plants utilize the sulfur dioxide absorption method, where high-grade gaseous SO₂ is introduced into a sodium hydroxide (NaOH) or sodium carbonate (Na₂CO₃) solution. The chemical equation is represented as:
Crucial to this process is the crystallization stage. Operating under strict temperature controls, we prevent the formation of sodium sulfite heptahydrate (Na₂SO₃·7H₂O), which naturally dehydrates into an unstable powder. Direct crystallization yields dense, dust-free anhydrous granules, significantly lowering clumping issues during maritime transport.
We produce varying specifications designed for specific industrial uses, ensuring that each buyer receives a grade matching their application needs:
| Analysis Parameter | Industrial Grade (Standard) | High-Purity / Photographic Grade |
|---|---|---|
| Na₂SO₃ Purity | ≥ 96.0% | ≥ 98.0% |
| Iron (Fe) Content | ≤ 0.005% | ≤ 0.002% |
| Free Alkali (as Na₂CO₃) | ≤ 0.10% | ≤ 0.05% |
| Water Insolubles | ≤ 0.05% | ≤ 0.02% |
Our chemicals support diverse applications across global manufacturing, metallurgy, and water treatment operations.
Used as an antichlor and bleaching agent to strip residual chlorine from fabrics after processing, preventing fiber degradation.
Preserves nutritional values and acts as a stabilizer, prepared under clean-room conditions to meet food-grade safety standards.
Used as a setting retarder and raw chemical intermediate in formulating high-performance concrete plasticizers.
Deploys as an effective depressant for zinc blende and copper sulfide ores during selective flotation separation.
Acts as a reliable oxygen scavenger in drilling muds and well injection fluids to suppress oxidation-induced corrosion.
Serves as a reducing agent in syntheses and as a stabilizer in formulated disinfectants.
Scavenges dissolved oxygen in industrial boilers and heating lines to prevent localized pitting and corrosion.
Used as a stabilizer and process agent in polymer manufacturing to preserve clarity and structural integrity.
Fully compliant with international chemical regulatory frameworks. We maintain up-to-date certificates for global shipments.
Building long-term logistics corridors and active partnerships at key chemical expos worldwide.
Since our inception in 2006, Shandong Pulisi Chemical has focused on the strategic positioning of "industrial, mining, and chemical raw material supply service provider". Sustainable sourcing, rigorous environmental management, and continuous supply chain upgrades define our roadmap. We invest heavily in safety systems, storage logistics, and regulatory adaptations, ensuring we consistently meet the import standards of over 100 countries.
How we guarantee stable material supplies, swift custom clearance, and optimized ocean freight rates.
We operate specialized warehouse hubs at key locations including Qingdao Port and Tianjin Port, allowing for immediate loading and shipping upon order confirmation.
Our logistics network stretches through Alashankou and Khorgos border crossings, enabling efficient overland transport to Central Asia and Europe.
Sodium Sulfite is highly moisture-sensitive. Our containers are lined with moisture-barrier film, and we offer palletized, shrink-wrapped, and customized packaging options.
Connecting supply chains alongside global energy companies, logistics firms, and research networks.
Find answers to common questions regarding regulatory compliance, pricing policies, logistics, and quality assurance.
Explore our secondary catalog of raw chemicals, manufactured under strict quality and safety guidelines.
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