Product Description
This colorless, transparent monoclinic crystal features a cool tactile sensation and a bitter taste, dissolving readily in water to form a weakly alkaline solution. Sodium thiosulfate, with the chemical formula Na2S2O3 (commonly occurring as the pentahydrate Na2S2O3·5H2O), is widely recognized as sodium hyposulfite or hypo. It melts at approximately 48°C and decomposes at temperatures exceeding 100°C. As a significant inorganic compound, its thiosulfate ion (S2O3²) imparts unique chemical properties: both reducibility and complexing ability. Upon reaction with acids, it decomposes to yield elemental sulfur and gas, while forming stable complexes with silver ions. In photography, it functions as a fixing agent by dissolving unexposed silver halides to preserve the image.
In medicine, it acts as an antidote for cyanide poisoning, where rhodanese catalyzes the conversion of cyanide ions into non-toxic thiocyanates. In analytical chemistry, it serves as a reference reagent for iodometric titrations. Industrially, it is employed in wastewater treatment for heavy metal removal, textile dechlorination, and leather tanning processes. For storage, it must be sealed and kept in a cool, dry location, away from acidic substances to prevent decomposition and the release of toxic gases, as well as to avoid purity degradation due to weathering.
Product Parameters
| ITEMS |
UNIT |
QUALITY STANDARD |
RESULTS
|
| Sodium Thiosulfate Content (Mass Fraction as Na2S2O3·5H2O) |
% |
≥98.0 |
99.01 |
| Ferric Content(Mass Fraction as Fe) |
% |
≤0.002 |
0.001 |
| Water Insoluble Substance (Mass Fraction) |
% |
≤0.01 |
0.002 |
Sulfide Content
(Mass Fraction as Na2S) |
% |
≤0.001 |
0.0008 |
| Sodium Chloride Content (Mass Fraction Basis for NaCl ) |
% |
≤0.05 |
0.04 |
| PH Value(200g/L solution) |
- |
6.5-9.5 |
8.0 |
| Appearance |
Transparent crystalline particles |
Conclusion
|
Qualified |
Application
In the elaborate realm of photography, sodium thiosulfate serves as a vital fixing agent, meticulously halting the development process by dissolving unexposed silver halides from photographic emulsions, thus precisely preserving the captured image. It skillfully governs the complex redox reactions and coordinate bonding essential for cross-linking collagen fibers, ensuring the structural integrity and durability of tanned leather through its multifaceted chemical interactions.Leather and Paper Industry In leather tanning, it acts as a reducing agent to adjust the oxidation state of tanning agents, influencing the tanning efficiency. Within papermaking, it is employed to bleach pulp, effectively removing residual oxidative bleaching agents to achieve desired whiteness.
Simultaneously, within the specialized field of leather tanning, this versatile compound assumes dual roles: as a reducing agent and a mordant for dichromate salts. Textile and Dyeing Industry As a dechlorinating agent, it eliminates residual hypochlorite post-bleaching, safeguarding fibers from damage. It participates in the synthesis of dye intermediates, regulating the conditions of redox reactions to facilitate optimal chemical processes.In doing so, it underscores the compound's indispensable role in advancing sustainable wastewater treatment paradigms that balance industrial productivity with ecological stewardship, offering a paradigm of chemical ingenuity in addressing one of modern industry's most pressing environmental challenges.
Within the intricately interconnected framework of industrial wastewater management, effluent streams often contain a wide-ranging and pernicious assortment of heavy metal ions, with lead exemplifying a particularly insidious contaminant whose prolonged environmental persistence poses profound ecological disruptions and grave threats to biological organisms at every trophic level. Sodium thiosulfate, by virtue of its uniquely tailored chemical reactivity, emerges as a cornerstone solution in this context, engaging in sophisticated stoichiometric interactions that yield insoluble sulfide precipitates with specific heavy metal species.
This mechanistic approach not only enables the systematic and targeted eradication of these toxic ions from industrial wastewater effluents but also orchestrates a comprehensive purification cascade, effectively mitigating the deleterious environmental impacts of industrial discharges. In doing so, it underscores the compound's indispensable role in advancing sustainable wastewater treatment paradigms that balance industrial productivity with ecological stewardship, offering a paradigm of chemical ingenuity in addressing one of modern industry's most pressing environmental challenges.
Packaging & Shipping
Packing: Package in 25/500 Kg bag, also accpet customer OEM packing.
Storage: Keep in a cool, dry, dark location in a tightly sealed container or cylinder.
Certifications and Reviews
Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc. Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!
FAQ
Q: How long is your delivery time?
A: It usually takes 7-10 days if the goods are in stock, or 10-15 days if the goods are not, depending on the quantity ordered.
Q: Can you support OEM ?
A: Yes, we can make products as your request.
Q: Do you provide samples?
A: Yes, we could offer the sample for free by requests but are not responsible for the freight cost.
Q: What payment terms do you accept?
A: We accept T/T, L/C at sight;
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