For procurement managers and safety officers, the sodium metabisulfite SDS (Safety Data Sheet) is more than a regulatory document—it is the foundation for safe handling, compliant storage, and effective risk management across your supply chain. Sodium metabisulfite (Na2S2O5), a versatile inorganic compound, is used globally in water dechlorination, gold mining cyanide detoxification, food preservation, pulp bleaching, and textile processing. However, its reactive nature with acids and moisture demands that every buyer understands the hazards and protocols detailed in the SDS. This guide decodes the sodium metabisulfite SDS, explains its key sections, and connects safety data to practical industrial applications, helping you make informed procurement decisions with a reliable supplier like Hailei Chemical.
Sodium metabisulfite is a white or yellowish crystalline powder with a pungent sulfur dioxide odor. Chemically, it is a disulfite salt that readily releases sulfur dioxide (SO2) when dissolved in water or in contact with acids—making it a powerful reducing agent and preservative. With CAS number 7681-57-4 and typical purity levels of 97–98% for both food grade and industrial grade, it meets strict specifications for multiple sectors. Hailei Chemical supplies premium sodium metabisulfite in 25 kg woven bags or 1000 kg supersacks, tailored to the logistical needs of mining operations, water treatment plants, and food processing facilities worldwide. Before delving into applications, however, it is critical to examine the sodium metabisulfite SDS because the product’s safe handling directly impacts operational continuity and regulatory compliance.
The sodium metabisulfite SDS follows the Globally Harmonized System (GHS) and is structured into 16 sections. While all sections matter, industrial buyers should focus on those that affect worker safety, storage design, and emergency response. We break down the most relevant parts of a standard sodium metabisulfite SDS and explain their practical implications.
Sodium metabisulfite is classified as harmful if swallowed and causes serious eye irritation. The SDS will display the GHS05 (corrosion) and GHS07 (exclamation mark) pictograms, along with the signal word “Danger.” Hazard statements include H302 (harmful if swallowed) and H318 (causes serious eye damage). These classifications mandate strict personal protective equipment (PPE) protocols and influence engineering controls in facilities. When training handling staff, always refer to this section to ensure hazard awareness. In a procurement context, confirm that your supplier’s product matches the described hazards—inconsistencies may indicate incorrect labeling or impure batches.
Accidental exposure requires immediate action. The SDS details eye contact: rinse cautiously with water for several minutes and remove contact lenses if possible; skin contact: wash with plenty of water; inhalation: move to fresh air; ingestion: rinse mouth and do not induce vomiting. For large-scale operators, this section guides the placement of eyewash stations and the composition of spill response kits. When sourcing from high-purity sodium metabisulfite producers like Hailei Chemical, ensure that the supplied SDS is up-to-date and matches the product lot, so your facility’s emergency protocols remain accurate.
Proper handling and storage are non-negotiable. Sodium metabisulfite must be kept in a cool, dry, well-ventilated area, away from direct sunlight and incompatible materials—especially strong acids, oxidizers, and moisture. The SDS typically advises storage temperatures not exceeding 25°C to prevent decomposition. At 150°C, sodium metabisulfite decomposes, releasing toxic sulfur dioxide gas. Therefore, warehouses must have adequate ventilation and temperature monitoring. For buyers importing container loads, this section underpins the need for dry-container transport and fumigation protocols that avoid chemicals that could accelerate decomposition. Our product packaging includes moisture-barrier liners, extending shelf life under proper conditions.
Occupational exposure limits for sodium metabisulfite are often tied to sulfur dioxide release. Common thresholds include a TWA (Time-Weighted Average) of 2 mg/mÂł for inhalable dust. The SDS will mandate the use of safety goggles, protective gloves (e.g., nitrile), and dust masks or respirators if ventilation is insufficient. For bulk-handling environments such as water treatment dosing stations or mining reagent preparation areas, local exhaust ventilation is recommended. Evaluate your operational layout against these controls before ordering large volumes, and consider automated dosing systems to minimize human contact.
This section provides crucial specification data: molecular weight (190.11 g/mol), melting point (150°C decomposes), solubility in water (47 g/100 mL at 20°C), and pH (3.5–4.5 for a 5% solution). For procurement, the purity percentage (typically 97% minimum for industrial grade and 98% for food grade) and iron content (<50 ppm for food grade) are vital. Hailei Chemical’s sodium metabisulfite technical specifications sheet includes an assay report that matches the SDS, ensuring you receive a product that meets both safety and performance expectations.
The phrase sodium metabisulfite used for uncovers a broad range of industries where the product’s reducing and preservative properties are essential. In each application, safe usage parameters directly tie back to the SDS. Here are the primary use cases:
Chlorine is widely used to disinfect potable water and treat wastewater, but residual chlorine must be removed before discharge or further treatment to protect aquatic life and downstream equipment. Sodium metabisulfite reacts rapidly with free chlorine, neutralizing it to harmless chloride ions. The stoichiometric ratio is approximately 1.34 mg of sodium metabisulfite per 1.0 mg of chlorine. Many plants also use sodium sulfite for dechlorination; however, sodium sulfite for dechlorination typically has a lower sulfur dioxide content and slower reaction kinetics. The SDS for sodium metabisulfite guides the design of dosing tanks—materials must resist acidic by-products, and storage areas must be dry to prevent caking. Understanding the sodium metabisulfite SDS helps water treatment managers avoid off-gassing incidents and maintain safe working atmospheres in pump rooms.
In gold leaching operations, sodium metabisulfite is used to detoxify cyanide in tailings before discharge, converting cyanide ions to less toxic cyanate via the SO2/air process. The SDS’s hazard statements become particularly relevant here, as mining sites often handle multiple hazardous chemicals. Proper PPE and emergency showers are mandatory. Bulk procurement for remote mine sites also demands packaging that withstands long transit and high humidity. Our 1000 kg supersacks with moisture barriers are designed to meet these exacting demands, ensuring product integrity from factory to mine.
Yes, sodium metabisulfite effectively inhibits bacterial growth, molds, and yeasts, which directly answers the question: does sodium metabisulfite kill bacteria? In the food industry, it is used as a preservative (E223) in dried fruits, wine, juices, and seafood. Its antimicrobial action comes from the release of sulfur dioxide, which penetrates microbial cells and disrupts enzyme systems. However, food-grade sodium metabisulfite must adhere to strict purity standards—arsenic, lead, and other heavy metal levels are tightly controlled. The SDS for food grade product will still list irritant properties; handlers must use appropriate gloves and masks to avoid respiratory sensitization. Buyers should always request a certificate of analysis confirming food-grade compliance alongside the SDS to meet FDA or EU regulations.
In pulp and paper manufacturing, sodium metabisulfite serves as a bleaching agent and an oxygen scavenger, while in textiles it neutralizes residual chlorine after bleaching processes, preventing yellowing and fiber damage. The textile industry often uses a dilute solution, which further emphasizes the need to understand the SDS for safe mixing and application. Ventilated areas and corrosion-resistant tanks are mandatory. Industrial buyers in these sectors look for consistent particle size and rapid dissolution rates—features that Hailei Chemical guarantees through rigorous quality control.
While both chemicals serve as oxygen scavengers and dechlorinating agents, there are distinct differences that affect procurement decisions. Sodium metabisulfite (Na2S2O5) contains about 65% available SO2 by weight, whereas anhydrous sodium sulfite (Na2SO3) offers roughly 25% SO2 equivalent. This means less sodium metabisulfite is needed to achieve the same dechlorination effect, reducing freight costs and storage space. Additionally, sodium metabisulfite solutions are more acidic, which can be either an advantage or disadvantage depending on the system’s pH tolerance. For large-scale water treatment, the faster reaction rate of metabisulfite often makes it the economical choice. But safety-wise, the sodium metabisulfite SDS indicates a stronger irritating potential than sodium sulfite, so hazard controls must be proportionally robust. Assess your system’s metallurgy and operator training level when making this choice.
An SDS is necessary but not sufficient to guarantee chemical performance. Discerning buyers evaluate additional parameters: purity (97% minimum, with 98%+ indicating premier grade), iron content (<50 ppm for food applications), heavy metals (<10 ppm), arsenic (<3 ppm), and selenite content. A trustworthy supplier provides batch-specific certificates of analysis (CoA) and technical data sheets that align with the SDS. Hailei Chemical maintains a robust quality management system, with third-party testing available upon request. When comparing international suppliers, also consider logistical reliability—our well-established export processes and packaging expertise ensure that the product arriving at your facility mirrors the documented specifications.
Transporting sodium metabisulfite, classified under UN number 1386, requires adherence to dangerous goods regulations (Class 8, packing group III). The SDS (Section 14) details transport information, including proper shipping name: “Sodium metabisulfite” and special provisions. Moisture is the biggest enemy during transit; our packaging includes inner polyethylene liners and desiccant bags to prevent caking. For ocean freight, we advise stowage away from sources of heat and acids. Pre-shipment inspections and verified gross mass (VGM) compliance are standard. By working closely with freight forwarders specializing in chemical cargo, we ensure that every shipment arrives safely and corresponds exactly to the SDS you have on file.
At Hailei Chemical, we believe that a comprehensive understanding of the sodium metabisulfite SDS is the first step toward building a safe, efficient, and compliant supply chain. Whether you require food-grade sodium metabisulfite for preservation or industrial grade for water treatment, our team stands ready to support your technical and logistical needs. Request a quote today and receive the full SDS and certificate of analysis specific to your order, ensuring peace of mind from procurement to production.
When procurement teams and chemical engineers search for “aluminum potassium sulfate sds”, they are frequently looking for the safety documentation of a white crystalline powder used in fertilizer, glass, aluminum recycling, and pharmaceutical excipients. This query often leads to confusion because the compound they actually need is potassium sulfate (K₂SO₄)—not aluminum potassium sulfate (alum). At Hailei Chemical, we supply premium potassium sulfate (sulfate of potash) with minimum 50% K₂O, and we provide the correct Safety Data Sheet (SDS) that meets all international regulatory standards. This article clarifies the distinction, walks you through every section of a typical potassium sulfate SDS, and explains why accurate documentation is critical for your sourcing decisions, from crop nutrition to high-purity glass manufacturing.
The mix-up is understandable. Both compounds share the word “potassium sulfate” in some trade names. However, chemically they are completely different:
Many industrial importers type “aluminum potassium sulfate sds” into search engines when their real requirement is a chlorine-free potassium fertilizer, a fining agent for specialty glass, or a salt for pharmaceutical formulations. The result? They land on a safety sheet for alum, which has different hazard classifications, exposure limits, and handling requirements. For a buyer responsible for worker safety and customs clearance, this can cause delays, mislabeling, and even regulatory non-compliance.
If you are sourcing potassium sulfate for high-value agriculture, glass production, aluminum recycling, or as an excipient in drugs like glucosamine sulfate potassium chloride formulations, the document you need is the potassium sulfate safety data sheet. The genuine aluminum potassium sulfate sds applies to a different substance with distinct properties. In this guide, we will focus on the 16-section SDS for potassium sulfate (Kâ‚‚SOâ‚„) as supplied by Hailei Chemical, while helping you interpret the data through the lens of your specific application.
A Safety Data Sheet is far more than a bureaucratic form; it’s the foundation of responsible chemical management across the supply chain. For importers and industrial users of potassium sulfate, the SDS serves several vital functions:
When you partner with Hailei Chemical, you receive a GHS-compliant SDS that precisely describes our product: a white, odorless powder with CAS 7778-80-5, minimum 50% Kâ‚‚O, and no hazardous impurities. This transparency builds trust and accelerates your supply chain.
Following the Globally Harmonized System (GHS), every SDS is structured in a standardized 16-section format. Below we decode the key sections relevant to potassium sulfate, highlighting what industrial buyers must know for different end uses.
This section provides the product identifier, recommended uses, and supplier contact information. For Hailei’s potassium sulfate, the chemical name is potassium sulfate, with synonyms such as sulfate of potash, SOP, and potassium sulfate formula K₂SO₄. Recommended applications include fertilizer, glass manufacture, aluminum recycling flux, pharmaceutical excipient, and gypsum board additive. Our full contact details are listed so you can quickly request a hard copy of the SDS for your records.
Pure potassium sulfate is generally classified as non-hazardous under GHS. However, the SDS will clearly state that it may cause slight eye irritation in dust form and recommend avoidance of breathing dust. It carries no flammable or explosive warnings, no acute toxicity, and no environmental hazard classification. This benign profile is one reason why potassium sulfate fertilizer is preferred for sensitive crops—it’s safe for workers and soil biology when handled with basic precautions. Knowing this contrasts sharply with some industrial salts that require elaborate containment measures.
Here you will see the exact composition: ≥99.0% K₂SO₄, with water-insoluble matter ≤0.05% and chloride (Cl) ≤0.5%. The CAS number 7778-80-5 is confirmed. Trace elements are minimal. This purity data is essential for pharmaceutical buyers evaluating uses of glucosamine sulfate potassium chloride as an excipient, where even low levels of heavy metals or chlorides can disqualify a batch. Our typical heavy metal content is Pb < 5 ppm, As < 2 ppm—well within pharmacopoeia limits.
Simple but crucial: rinsing eyes with water, washing skin with soap and water, moving to fresh air after excessive dust inhalation. No special antidotes are needed. For bulk-handling facilities, this section confirms that medical emergencies are unlikely if basic hygiene is followed.
Potassium sulfate is non-combustible and can act as a flame retardant. The SDS advises using extinguishing media suitable for surrounding materials (water spray, foam, CO₂). Firefighters should wear standard protective gear—no special decomposition hazards arise from the compound itself.
Spilled material should be collected mechanically and placed in clean, dry containers. Avoid dust generation and prevent entry into surface water or groundwater. Because potassium sulfate is highly water-soluble, it can be flushed with water if local regulations permit. The low environmental risk is a selling point for applications like chlorine-free fertilizer that won’t harm aquatic systems.
This section is indispensable for warehouse managers. K₂SO₄ should be stored in a cool, dry, well-ventilated area, away from strong acids and moisture. It is hygroscopic over ~85% relative humidity, so packaging integrity matters. Our standard packing—25 kg, 50 kg PE-lined bags, or 1000 kg big bags—preserves quality. The SDS also specifies that the product is non-corrosive to most materials, so carbon steel silos are acceptable, reducing infrastructure costs compared to chloride-based salts.
Occupational exposure limits for potassium sulfate are typically 10 mg/mÂł (total dust) in many jurisdictions. The SDS recommends local exhaust ventilation in dusty processes, safety glasses, protective gloves (e.g., nitrile), and long-sleeved clothing. For high-volume blending of what is potassium sulfate fertilizer, the emphasis is on dust masks (N95 equivalent) to prevent inhalation nuisance. This practical advice helps you design safe production lines.
Key data points: appearance (white crystalline powder), odor (none), pH (7–9 in 5% solution), melting point (1069 °C), solubility (120 g/L at 25 °C), bulk density (1.2–1.4 kg/L). These properties are referenced when formulators calculate blending ratios and when glass makers verify that the product melts evenly in the batch without introducing bubbles or color.
Potassium sulfate is stable under normal conditions. It does not undergo hazardous polymerization. Incompatible materials include strong acids (may release sulfur oxides) and strong reducing agents. This stability is a major logistics advantage—no temperature-controlled shipping, no time-sensitive reactivity, and a shelf life exceeding 24 months when properly stored.
The SDS will show that acute oral toxicity (LD50, rat) is >2,000 mg/kg, meaning low toxicity. It is not a skin sensitizer, carcinogen, or mutagen. These data points support pharmaceutical applications and confirm that even if used in animal feed (an emerging use), the risk is negligible under normal conditions.
Kâ‚‚SOâ‚„ is not classified as ecotoxic. In fact, as a fertilizer, it provides essential nutrients. However, very high concentrations can contribute to salinity; the SDS advises preventing release to sensitive groundwater systems. This balanced approach helps EHS managers communicate sustainability credentials.
Material can be reused if uncontaminated. Otherwise, disposal must comply with local regulations, typically through permitted waste treatment facilities or as agricultural soil amendment where allowed. Our SDS helps you avoid classification as hazardous waste, reducing disposal costs.
Not classified as dangerous goods for road, rail, sea, or air according to ADR, IMDG, IATA. UN number: not applicable. This drastically simplifies logistics documentation, especially compared to ammonium nitrate or chlorinated compounds. When your consignment arrives at port, the SDS confirms that no special placarding or segregation is required.
Lists all relevant safety, health, and environmental regulations for the substance. For EU markets, this includes REACH registration. For US buyers, it covers TSCA status and DOT exceptions. Having a fully compliant SDS from Hailei Chemical means you can immediately demonstrate conformance to downstream regulators.
Includes the date of SDS preparation (or revision), an explanation of abbreviations used, and a disclaimer. Always verify you have the latest version. At Hailei, we update our SDS whenever there is a change in classification, composition, or regulatory requirements and immediately provide the new document to our clients.
While the core SDS is the same, certain sections take on greater importance depending on your sector:
A genuine aluminum potassium sulfate sds (for alum) differs markedly from Kâ‚‚SOâ‚„. Alum solutions can be slightly acidic, and the powder may cause more pronounced irritation due to its acidic nature when hydrated. Alum also has different solubility curves and cannot be used as a chlorine-free fertilizer. If you order potassium sulfate but receive SDS for alum, you risk importing the wrong chemical, leading to crop damage or glass defects. Always insist on product-specific documentation. Hailei Chemical attaches the precise SDS to every shipment, and our commercial team is trained to distinguish between the two compounds immediately.
Even experienced buyers can miss critical details in the SDS. Watch for these issues:
By scrutinizing these elements, you protect your operation and avoid sourcing from substandard producers.
At Weifang Hailei Fine Chemical Co., Ltd., we treat the SDS as a living document. Our dedicated quality team continuously monitors regulatory changes across major markets—REACH, OSHA, CLP, GSO—and updates the safety sheet accordingly. When you request a quote, we provide the latest SDS in PDF along with the Certificate of Analysis (COA) and, for pharmaceutical customers, BSE/TSE-free and GMO-free statements. This comprehensive documentation package helps you clear customs faster, qualify for tenders, and meet supplier audit requirements.
If you have been searching for “aluminum potassium sulfate sds” but actually need safety data for premium potassium sulfate, you’ve found the right partner. We invite you to visit our product page to download a specimen SDS or to speak with our technical specialists about your specific application—whether it’s high-purity glass, high-value vegetable nutrition, or a glucosamine sulfate potassium chloride formulation.
Ensure your next bulk order comes with accurate, current, and application-relevant safety documentation. Contact us today for a customized SDS and competitive pricing on potassium sulfate that meets international standards.