Aure Chemical: Your Reliable Source for High-Purity Sodium Thiosulfate Anhydrous (CAS 7772-98-7)
Aure Chemical is a premier global supplier of high-quality Sodium Thiosulfate Anhydrous (Na₂O₃S₂). Identified by its CAS number 7772-98-7, this anhydrous form of Sodium Thiosulfate is a white crystalline powder, highly soluble in water, and prized for its absence of crystalline water, leading to a higher concentration of active chemical by weight compared to its pentahydrate counterpart. It is a powerful reducing agent and finds critical applications across diverse industries, including its historical role as a photographic fixer, its modern use as an efficient dechlorinating agent in water treatment, and its importance in analytical chemistry and specialized industrial processes. Aure Chemical's commitment to excellence ensures that our Sodium Thiosulfate Anhydrous meets the stringent purity and performance requirements for your most demanding applications, guaranteeing consistency and reliability.
Product Overview & Key Properties of Sodium Thiosulfate Anhydrous
Sodium Thiosulfate Anhydrous (CAS No. 7772-98-7) is meticulously produced and rigorously tested to meet stringent quality standards. We ensure exceptional purity and consistent performance, essential for your operations:
| CAS No.: | 7772-98-7 |
| EC No.: | 231-867-5 |
| Linear Formula: | Na₂O₃S₂ |
| Molecular Weight: | 158.11 |
| Appearance: | Transparent Liquid |
| Melting Point: | 48°C |
| Boiling point | 100°C |
| Density: | 1.01 g/mL at 25 °C |
| Solubility: | Highly soluble in water. Insoluble in alcohol. |
| Concentration: | Offers a higher concentration of active Na₂S₂O₃ per unit weight due to the absence of water molecules. |
| Nature: | Strong reducing agent. Generally stable under normal conditions but can decompose in acidic solutions. |
| Chemical Structure: |  |
Our commitment to delivering high-purity Sodium Thiosulfate Anhydrous ensures a reliable and efficient component for your critical processes, particularly where water content is a concern.
Primary Applications of Sodium Thiosulfate Anhydrous (Na₂O₃S₂)
Sodium Thiosulfate Anhydrous's potent reducing capabilities, high purity, and efficient reactivity make it an incredibly valuable and widely used compound with applications across numerous industries:
Photographic Industry (Fixer):
It is extensively used as a fixing agent in both traditional black-and-white and color photographic processes. It dissolves unexposed silver halides from photographic film and paper, stabilizing the image and making it light-fast. The anhydrous form is preferred for some concentrated solutions or dry formulations.
Water Treatment and Dechlorination:
It serves as an efficient dechlorinating agent to neutralize residual chlorine and chloramines in municipal drinking water, wastewater, swimming pools, and industrial process water. This is vital before discharge or when chlorine interferes with other chemical processes, such as in brewing, aquaculture, and pharmaceutical production.
Analytical Chemistry:
Due to its high purity and consistent composition, Sodium Thiosulfate Anhydrous is an essential reducing agent and titrant in iodometric titrations, used to accurately determine the concentration of oxidizing agents in various samples.
Medical and Pharmaceutical Applications:
While often the pentahydrate form is used, Sodium Thiosulfate (including high-purity anhydrous for specific formulations) acts as an antidote for cyanide poisoning, converting cyanide to less toxic thiocyanate. It's also used topically for certain fungal skin conditions.
Gold and Silver Extraction:
In the mining industry, particularly in hydrometallurgy, it is used as a less toxic lixiviant (leaching agent) for the extraction of gold and silver from ores, especially for complex or refractory ores.
Chemical Manufacturing:
It serves as a reducing agent in various chemical synthesis processes and as an intermediate for the production of other sulfur-containing compounds.
Why Choose Aure Chemical for Your Sodium Thiosulfate Anhydrous Supply?
Aure Chemical is dedicated to providing superior chemical solutions and unparalleled customer support. By partnering with us for your Sodium Thiosulfate Anhydrous requirements, you benefit from:
Exceptional Purity & Concentrated Form: Our Sodium Thiosulfate Anhydrous is manufactured to stringent purity specifications, offering a higher active chemical concentration per unit weight, which is crucial for precise formulations and efficient processes.
Reliable Global Supply Chain: We maintain a robust and efficient supply network, guaranteeing timely and secure delivery of this essential chemical to your facilities worldwide, adhering to all strict safety and regulatory standards.
Expert Technical Support: Our team of experienced chemists and specialists is readily available to offer comprehensive guidance on product application, safe handling procedures, and optimal storage conditions for Sodium Thiosulfate Anhydrous.
Commitment to Quality & Safety: We adhere to the highest industry standards for quality management, safety, and environmental responsibility across all our operations, ensuring peace of mind for our clients.
Choose Aure Chemical for a trustworthy and dependable supply of high-quality Sodium Thiosulfate Anhydrous. We're ready to support your most demanding and innovative industrial processes.
Packaging, Transportation & Storage Solutions
At Aure Chemical, we understand the critical importance of rigorous packaging, transportation, and storage for chemical products. To ensure the safety and integrity of the products you purchase, and to comply with international and national regulations, we provide the following general guidelines. Please note that each specific product has its own Safety Data Sheet (SDS), which contains the most detailed and authoritative information on packaging, transportation, and storage. We strongly advise you to consult and strictly adhere to the SDS for the respective product.
| I. Packaging Solutions | II. Transportation Solutions | III. Storage Solutions |
We utilize various UN (United Nations) certified packaging containers based on the chemical nature, hazard class, and transportation requirements of our products. Common packaging types include, but are not limited to: Steel Drums: Suitable for a wide range of liquid and solid products, especially flammable liquids. Plastic Drums/Jerricans: Primarily used for corrosive liquids like acids and bases, or substances incompatible with metal. Composite Drums: Combine the corrosion resistance of a plastic inner liner with the strength of a steel or fiber outer shell. IBCs (Intermediate Bulk Containers): Often referred to as "Tote Bins" or "Cubic Tanks," these are used for larger volumes of liquid or solid dangerous goods, offering efficient storage and transport solutions. Lined Bags or Fibre Drums: Primarily used for powdered or granular solids. Glass Bottles: Typically used as inner packaging for small quantities of high-purity or specialized chemicals, requiring additional absorbent material and sturdy outer packaging (e.g., wooden crates, fiberboard boxes). Steel Cylinders: Specifically designed and constructed as pressure vessels for the storage and transport of compressed, liquefied, or dissolved gases. Available in various capacities and pressure ratings, they are built to withstand high internal pressures and ensure the safe containment of gaseous substances.
All packaging undergoes stringent testing and complies with UN packaging performance levels to ensure product safety under normal transport conditions. | We strictly adhere to international and regional regulations for the transport of dangerous goods, ensuring full compliance and safety from our facility to your delivery point. Sea Freight (IMDG Code): We strictly comply with the International Maritime Dangerous Goods (IMDG) Code, using UN-certified containers and ensuring proper dangerous goods declaration, marking, and stowage. Air Freight (IATA DGR): We follow the International Air Transport Association (IATA) Dangerous Goods Regulations, which impose the strictest requirements for packaging, labeling, documentation, and quantity limitations. Road/Rail Transport (ADR/RID & Local Regulations): We comply with the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR), the Regulations concerning the International Carriage of Dangerous Goods by Rail (RID), and specific national/regional regulations to ensure safe land transport.
Regardless of the transport mode, we will provide the following essential documentation: Safety Data Sheet (SDS/MSDS): Provides product hazard information, safe handling guidelines, emergency measures, etc. Dangerous Goods Declaration (DGD): Detailed information on dangerous goods, packing group, UN number, etc., for carriers and relevant authorities. Other Necessary Certifications or Documents: Such as Certificates of Analysis (COA).
Upon receiving your shipment, please carefully verify the integrity of the packaging and the label information.
| Proper storage is crucial for maintaining product quality and ensuring operational safety. The following are general storage principles: Dedicated Areas: Dangerous chemicals should be stored in designated warehouses or areas that meet safety standards, away from residential zones and densely populated areas. Segregated Storage: Strictly classify and segregate products according to their hazard class to prevent incompatible substances from being stored together and causing dangerous reactions (e.g., acids and bases separated, flammables away from oxidizers). Good Ventilation: Storage areas should maintain good natural or forced ventilation to prevent the accumulation of hazardous gases or vapors. Temperature & Humidity Control: Control the temperature and humidity of the storage environment according to the recommendations in the SDS. Avoid direct sunlight and extreme temperatures. Fire and Explosion Prevention: Storage areas for flammable and explosive products should be equipped with adequate fire-fighting equipment, prohibit open flames, and ensure electrical equipment meets explosion-proof standards. Clear Labeling: All storage containers and areas should have clear, conspicuous hazard labels and warning signs. Spill Response: Storage areas should be equipped with appropriate spill response equipment and materials, and personnel should be familiar with emergency procedures. Regular Inspections: Periodically inspect the integrity of storage containers to ensure no leaks or damage, and verify label information. Away from Food and Drinking Water: Avoid cross-contamination.
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| Should you have any questions regarding the packaging, transportation, or storage of specific products, or require a customized solution, please do not hesitate to contact us. |
