Product Description
Sodium thiosulfate, chemically formulated as Na2S2O3 (typically occurring as the pentahydrate Na2S2O3.5H2O), is an odorless colorless crystalline compound that feels cool to the touch and has a bitter taste. Referred to as in Chinese and commonly known as "hypo" in industrial sectors such as photography, this compound demonstrates high solubility in water, yielding a slightly alkaline solution. It melts at approximately 48°C as the pentahydrate and decomposes at temperatures exceeding 100°C. Functioning as a reducing agent, it participates in titrations with iodine and releases gas alongside elemental sulfur when exposed to acidic conditions. Widely utilized as a primary standard in iodometric analysis, a photographic fixer to eliminate unexposed silver halides, an antidote for cyanide poisoning, and across industries including textiles, wastewater treatment, and leather tanning, it requires storage in cool, dry environments away from acids to prevent efflorescence or the release 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.this mechanism not only enables the systematic removal of these toxic species from wastewater streams but also orchestrates a comprehensive purification process.a photographic fixer to eliminate unexposed silver halides, an antidote for cyanide poisoning, and across industries including textiles, wastewater treatment, and leather tanning, it requires storage in cool, dry environments away from acids to prevent efflorescence or the release of toxic.
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.
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; this mechanism not only enables the systematic removal of these toxic species from wastewater streams but also orchestrates a comprehensive purification process, effectively mitigating the environmental contamination caused by industrial discharges and underscoring the compound's critical role in sustainable wastewater treatment paradigms.
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.
Textile and Dyeing Industry
As a "dechlorinating agent", it removes residual or hypochlorite after bleaching to prevent fiber damage;
It is used in the synthesis of dye intermediates to adjust the conditions of redox reactions.
Leather and Paper Industry
As a reducing agent in leather tanning, it adjusts the oxidation state of the tanning agent;
In papermaking, it is used to bleach paper pulp and remove residual oxidizing bleaching agents.
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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