Product Description
Basic Information: Sodium thiosulfate/Hypo
chemical formula: Na2S2O3.5H2O
Sodium thiosulfate, chemically expressed as Na2S2O3 (frequently encountered as the pentahydrate Na2S2O3.5H2O), is an odorless, colorless crystalline compound that presents a cool tactile sensation and a bitter taste. Referred to as in Chinese and commonly denoted as "hypo" within industrial arenas such as photography, this substance exhibits high solubility in water, yielding a mildly alkaline solution. As the pentahydrate, it melts at approximately 48°C and undergoes decomposition at temperatures exceeding 100°C.
Functioning as a reducing agent, it engages in titration reactions with iodine and, when exposed to acidic environments, releases gas alongside elemental sulfur. Employed as a primary standard in iodometric analysis, a photographic fixative for eliminating unexposed silver halides, an antidote for cyanide intoxication, and across industries including textiles, wastewater treatment, and leather tanning, it must be stored in cool, dry locales away from acids to avert efflorescence or the emission of toxic.
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 intricate domain of photography, sodium thiosulfate serves as an indispensable fixing agent, meticulously halting the development process by dissolving unexposed silver halides from photographic emulsions, thus preserving the captured image with precision. Concurrently, within the specialized field of leather tanning, this versatile compound assumes dual roles as both a reducing agent and a mordant for dichromate salts, skillfully mediating the complex redox reactions and coordinate bonding essential for cross-linking collagen fibers, thereby ensuring the structural integrity and durability of tanned leather through its multifaceted chemical interactions.
At the same time, in the specialized field of leather tanning, this adaptable compound takes on two roles: a reducing agent and a mordant for dichromate salts. It skillfully controls the complex redox reactions and coordinate bonding necessary for cross-linking collagen fibers, ensuring the structural stability and durability of tanned leather through its diverse chemical interactions.
Sodium thiosulfate, through its unique chemical reactivity, emerges as a pivotal solution by engaging in intricate stoichiometric reactions that yield insoluble sulfide precipitates with specific heavy metal ions;In the elaborate realm of photography, sodium thiosulfate functions as a vital fixing agent, carefully terminating the development process by dissolving unexposed silver halides from photographic emulsions, thus accurately preserving the captured image.
In the complex landscape of industrial wastewater management, effluents frequently contain a diverse array of pernicious heavy metal ions, with lead standing as a prime example, whose persistence in the environment poses severe ecological risks and significant threats to biological systems.Within the intricate framework of industrial wastewater management, effluent streams commonly harbor a wide-ranging assortment of harmful heavy metal ions, with lead exemplifying a primary concern; their prolonged presence in the environment poses grave ecological hazards and substantial risks to biological organisms.
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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