Ammonium Thiosulfate CAS 7783-18-8
Free Sample Ammonium Thiosulfate
- Appearance:Powder
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: Ammonium Thiosulfate
CAS:7783-18-8
MOQ: 1KG
Directory Guidance on Ammonium Thiosulfate
Chemical Structure
Basic Info:
| Melting point | 150 °C (lit.) |
| density | 1.679 g/mL at 25 °C (lit.) |
| solubility | H2O: very soluble(lit.) |
| form | Crystalline Powder |
| color | White |
| Odor | Ammonical odour |
Product Introduction:
Ammonium Thiosulfate, chemical formula H8N2O3S2, is an important inorganic compound with the chemical formula of H8N2O3S2. At room temperature it forms a colorless monoclinic crystal system characterized by delixability and with an approximate relative density of 1.679. It is highly soluble in water but only slightly so in acetone; alcohol and ether do not dissolve it completely. When heated to 150F it decomposes into ammonium Sulfite plus sulfur before decomposing further into ammonium Sulfite plus ammonia plus hydrogen sulfide + water when heated this compound unstable in air but relatively stable when stored near ammonia environments so special care must be paid in regards to sealing and environmental conditions when stored – special attention should be paid when stored next time.
There are two primary methods for the production of Ammonium Thiosulfate: traditional calcium salt method and improved barium salt method. The traditional calcium salt method involves reacting ammonium bicarbonate with sulfur dioxide and water to form ammonium sulfite, and then reacting this product with sulfur to produce Ammonium Thiosulfate; however this requires refrigeration conditions, has lower product purity levels, freezing needs as well as some disadvantages such as lower purity levels and additional cost for refrigeration compared with barium salt method which utilizes intermediate product barium Thiosulfate to Ammonium Thiosulfate; its advantages over traditional methods make this more suitable for large-scale production facilities.
Ammonium Thiosulfate has many applications across several fields. Within photography, it serves as an efficient photographic fixer with faster fixing speed and reduced wash time compared to traditional sodium thiosulfate fixers. Furthermore, ammonium Thiosulfate can also be found as an electroplating complexing agent which replaces highly toxic sodium cyanide for cyanide-free electroplating processes, metal cleaning agent for aluminum magnesium alloy casting protection agents as well as chemical reagent.
Ammonium Thiosulfate requires careful storage and transportation conditions when being stored and transported, in terms of both environmental conditions as well as its storage environment. For optimal storage conditions it should be stored in a cool, dry warehouse with minimal moisture content; ammonia-filled closed equipment is recommended to prevent decomposition and deterioration from occurring; packaging usually consists of plastic woven bags lined with polyethylene plastic bags each net weight 25kg in weight; due to its hazardous by-products (hydrogen sulfide), good ventilation conditions should be maintained during both its operation and storage conditions in order for it to function optimally.
Ammonium Thiosulfate stands out as a multifunctional chemical product with vast market prospects. Future development should focus on high efficiency and environmental protection. Due to digital photography’s increased adoption, traditional photography may diminish in demand but will likely find use elsewhere such as medicine, water treatment or agriculture. As chemical safety requirements rise further still, high purity special grade versions will become sought-after commodities on the market.
Nature and Specifications:
| Item | Specification |
| Product Name | Ammonium Thiosulfate |
| CAS No. | 7783-18-8 |
| Appearance | Powder |
| Shelf Life | 2 years |
| Packing | As your requirements |
| Water Solubility | Soluble in water, slightly soluble in acetone. Insoluble in ethanol and diethyl ether. |
| Sensitive | Hygroscopic |
| Merck | 14,562 |
| Stability: | Stable. Hygroscopic. |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
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1. Photography and imaging
Ammonium Thiosulfate is a key chemical in photographic, black and white and color film and photographic paper development processes. It fixes the image by removing unexposed silver halide crystals, so the image does not fade or blur in subsequent processing. Compared with the traditional sodium thiosulfate (Hypo) fixer, it has a faster dissolution rate and a shorter fixing time, so it can greatly improve the development efficiency. It is also used in photographic chemical formulations, such as developer and stop developing solution.
2. Synthesis of drugs and chemicals
Ammonium Thiosulfate is widely used in drug synthesis, antidote preparation and drug quality control. It is a weakly reducing agent; Therefore, it can be used to prepare organic compounds such as sulfides and thiocyanates. It is also used in the preparation of intermediates for certain drugs, mainly those involved in the reduction reaction step. Another application of Ammonium Thiosulfate in chemical synthesis is as a detection and quantitative analysis agent.
3. Water treatment and environmental protection
Ammonium Thiosulfate is mainly used for water treatment to remove metal contaminants from industrial wastewater. It can form stable complexes with heavy metal ions (such as mercury, cadmium, lead, etc.), thus allowing these toxic elements to be removed from water by precipitation. Ammonium Thiosulfate can also be used for high concentration ammonium sulfate waste treatment; It converts sulfate to thiosulfate through biological sulfate reduction (BSR) technology, reducing ammonia nitrogen in waste.
4. Agriculture and soil improvement
Ammonium Thiosulfate is mainly used in agriculture as a fertilizer and soil amendment. It can provide plants with two essential nutrients, nitrogen and sulfur, thus promoting plant growth and increasing production. Studies have shown that it can also inhibit methane emissions from rice fields and reduce greenhouse gas emissions by stimulating the activity of sulfate reducing bacteria (SRB). In addition, it can also be used as a complex agent of trace elements, improve the freezing point of fertilizer, and enhance the stability and effectiveness of fertilizer.
5. Industry and material processing
Ammonium Thiosulfate used in industry for metal surface treatment and electroplating process. It acts as a reducing agent and a complexing agent to remove the oxide layer on the surface of the metal, making it cleaner and brighter. It can replace sodium cyanide, which is highly toxic in cyanide-free electroplating, for electroplating metals such as silver and copper. This means environmental protection and safety. Ammonium Thiosulfate is also used in the manufacture of lubricants, herbicides, and defoliants.
Ammonium Thiosulfate is of great significance in various fields such as photography, medicine, water treatment, agriculture and industrial applications due to its unique chemical properties. With the advancement of technology and the improvement of environmental protection requirements, its application range will increase.
Ammonium Thiosulfate is a versatile inorganic compound that has advantages in many fields due to its unique chemical properties. Ammonium Thiosulfate is used in agriculture as a highly efficient liquid fertilizer through which it provides two very essential nutrients to crops, namely nitrogen and sulfur, to promote plant growth. It contains 12% nitrogen and 26% sulfur, which can quickly replenish nutrients and improve fertilizer utilization while reducing nitrogen volatilization losses. It can also improve soil structure, reduce soil alkalinity, and flexibly meet crop needs through multiple applications, such as drip and spray irrigation.
Ammonium Thiosulfate has many advantages in this regard. It is used for photographic fixing; It is more effective than traditional sodium thiosulfate (Hypo). It can greatly reduce fixing and cleaning time and help recover silver. In the electroplating industry, it is used as a complexing agent for cyanide-free electroplating, replacing highly toxic sodium cyanide and reducing environmental pollution. It can also be used to clean metal surfaces and protect aluminum-magnesium alloy castings. It is very effective in reducing metal corrosion.
Ammonium Thiosulfate also has vital benefits in terms of chemical analysis and environmental control. It is an important reducing and complexing agent because it reduces metal ions, allowing analysts to perform quantitative analyses. In environmental applications, it can be used to remove heavy metal ions from water; It precipitates and separates contaminants by forming stable complexes. It also reduces ammonia volatilization and methane emissions from the soil, thus reducing greenhouse gas production.
Ammonium Thiosulfate is very convenient and economical in preparation and storage. The product obtained by barium salt method has high purity, no need for freezing conditions, simple operation, low cost, and will not cause environmental pollution. It is stable in ammonia environment; It is not easy to decompose, and its long-term storage suitability makes it less advantageous in practical applications, but an advantage.
In short, Ammonium Thiosulfate has great significance in various fields such as industry, agriculture, chemical analysis, environmental protection and so on. It is a highly effective active agent, can improve the efficiency of agricultural production, while replacing toxic chemicals in industry, reduce environmental pollution; It is of great significance in chemical analysis and environmental management. As long as the technology continues to develop, its application prospects will be better and better.
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