Ammonium Thiosulfate CAS 7783-18-8
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Factory Supply Ammonium Thiosulfate CAS 7783-18-8 with Best Price
- Appearance: White powder
- Purity: 99. 0%min
- Stock: In stock
- Sample: Available
- Zhishang Chemical: Ammonium Thiosulfate Supplier & Manufacturer
Ammonium Thiosulfate: The Complete Guide
- Item 1: Basic Info
- Item 2: What is Ammonium Thiosulfate?
- Item 3: Ammonium Thiosulfate Uses
- Item 4: The Manager has Something to Say
- Item 5: Application of Ammonium Thiosulfate
- Item 6: Production Method of Ammonium Thiosulfate
- Item 7: Quality Control of Ammonium Thiosulfate
- Item 8: Hot Sale Products
- Item 9: Get Ammonium Thiosulfate Quotation
Ammonium Thiosulfate for Sale
Basic Info
Basic Info
Chemical Properties
Other Info
Basic Info
| Chemical Name: | Ammonium Thiosulfate |
| Other Name: | AMMONIUM HYPOSULFITE; Thiosulfuricacid,diammoniumsalt; Ammonium cyanide |
| CAS: | 7783-18-8 |
| EINECS: | 231-982-0 |
| Type: | Inorganic salt; Pesticide intermediate |
| Molecular Formula: | H8N2O3S2 |
| Molecular Weight: | 148.21 |
Chemical Properties
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 |
Water Solubility | Soluble in water, slightly soluble in acetone. Insoluble in ethanol and diethyl ether. |
Sensitive | Hygroscopic |
Merck | 14,562 |
Stability: | Stable. Hygroscopic. |
Other Info
| Brand Name: | Zhishang Chemical |
| Provide: | Ammonium Thiosulfate MSDS; Ammonium Thiosulfate COA |
What is Ammonium Thiosulfate?
Ammonium thiosulfate, chemical formula (NH4)2S2O3. Molecular weight 148.20. Colorless monoclinic crystals. The melting point is 150°C (decomposition), and the relative density is 1.679. Soluble in water, insoluble in ethanol, slightly soluble in acetone. Its aqueous solution has long-standing sulfur precipitation. Its concentrated aqueous solution above 50°C gradually decomposes into sulfur and sulfate. Ammonium thiocyanate and ammonium sulfite are formed in the presence of ammonia and hydrocyanic acid. Aqueous solution can dissolve silver halide. Its ability to dissolve silver chloride and silver bromide is greater than that of sodium thiosulfate, so it is also used for fast fixing. However, it has a dissolution effect on the metallic silver that constitutes the image.
Preparation method: It can be prepared by adding excess ammonium carbonate to calcium thiosulfate aqueous solution, or can be prepared by mixing ammonium bisulfide and ammonium bisulfite aqueous solution at an accurate molar ratio of 1:2, and reacting; it can also be obtained by freezing and crystallizing after double decomposition reaction of ammonium sulfite and ammonium polysulfide to remove sulfur.
Ammonium Thiosulfate Uses
- Clean “white” metal; In terms of photography; Lubricant used for metal cold working.
- Ammonium thiosulfate is used for semiconductor parts, synthesis of Organoboron chemistry, plasticizer, welding flux.
- Ammonium thiosulfate can be used to leach gold and silver because it forms a solid complex. It is widely used as a photographic fixer, and its effect is faster than that of Sodium thiosulfate fixer. It is used as fertilizer. As an additive for coal waste mixtures, it can inhibit the formation of hazardous dioxins and furans. Used as an analytical reagent in the laboratory.
- Ammonium thiosulfate acts as a complexing agent in cyanide free electroplating, and Thiosulfuric acid combines with silver ion to form Thiosulfuric acid silver complex ion. Improve the cathodic polarization effect, making the silver plating layer crystallize finely and have good coverage ability. The general dosage is 200-250 g/L.
- The photographic market is made use of as a photographic fixer. Compared with sodium salt, the solution movie of Silver halide is less complicated to liquify. It has the advantages of brief washing time and simple silver healing. Likewise used as the primary component of silver plating baths; Detergent for metal surfaces; Aluminum magnesium alloy spreading protective representative. Made use of as a fungicide as well as analytical reagent in medicine.
- Ammonium thiocyanate, also known as Ammonium cyanide, is used to synthesize tert butyl Thiocyanic acid, an intermediate of the insecticide thiazinone, and thiosemicarbazide, an intermediate of the insecticide zolimicarb, the fungicide lobazole, and the herbicide fluthiazolamide. In addition, it is also used as an auxiliary raw material and dye for manufacturing hydrogen peroxide, and as a polymerization catalyst for organic synthesis.
The Manager has Something to Say
This is William, CEO of Zhishang Chemical Co., Ltd.
Welcome to visit our factory . As the top chemical manufacturer, we have been striving for product quality, innovation , R&D, and customer service for the past 7 years. In the next 10 years or even longer, we are committed to becoming the most reliable chemical supplier in the world , creating a well-known international brand trusted by customers, with the spirit of “one meter wide, ten thousand meters deep”, we continue to focus on product research and development, continue to focus on customer service, continue to improve the supply chain service system, to create a professional chemical supply service team, to achieve win-win long-term cooperation. Please feel free to contact us if you have any questions.
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Application of Ammonium Thiosulfate
Ammonium thiocyanate is commonly utilized as a photographic fixer, steel cleaner, electroplating service and also minimizing agent.
In farming, it is used to synthesize the intermediate tert-butyl isothiocyanate of the insecticide buprofezin, and the intermediate thiosemicarbazide of the pesticide pyraprocarb, the fungicide euconazole, and the herbicide flufenacet; additionally, it is likewise utilized as a complementary resources and also dye for the manufacturing of hydrogen peroxide, as well as a polymerization catalyst for natural synthesis.
In the photosensitive market; used as a photo fixer, it is much easier to liquify the silver halide emulsion than sodium salt, and has the advantages of brief washing time and also simple silver recovery; it is likewise made use of as the main element of the silver plating bathroom, and is used as a complexing representative in cyanide-free electroplating. Thiosulfate radicals combine with silver ions to create silver thiosulfate complicated ions. Enhance the cathodic polarization, make the crystallization of the silver plating layer penalty, and also the covering capability is excellent. The general dose is 200 ~ 250g/L.
It is also utilized in the synthesis of natural boron compounds, plasticizers, welding fluxes; steel surface cleaners; aluminum-magnesium alloy casting security representatives. It is utilized as a fungicide and analytical reagent in medication.
Production Method of Ammonium Thiosulfate
Ammonium sulfite technique
Ammonium bicarbonate method
Carbon disulfide approach
Sulfur approach
Ammonium sulfite technique
Add NH3 water into the response pot, and go through SO2 to get ammonium sulfite for later usage.
Include ammonium polysulfide to the response kettle, add water to dissolve, slowly add the above option under mixing, respond at 30-55 ° C, and also keep the response remedy dark orange during the response process. The amount of ammonium sulfite solution included is somewhat less than the theoretical amount. After the ammonium sulfite service is added, heavy steam for numerous hrs to repel the ammonium sulfide. The reaction solution was filteringed system, steamed under the defense of nitrogen, and decolorized with turned on carbon to get rid of sulfur. Freezing condensation, centrifugal dehydration, and also drying out under the defense of ammonia gas to get the ended up product.
Ammonium bicarbonate method
Ammonium sulfite is developed by the activity of ammonium bicarbonate, sulfur dioxide and water. After filtering to get rid of pollutants, it is warmed as well as steamed with sulfur to respond, and afterwards filtered, vaporized, cooled and taken shape, and centrifuged to obtain the finished item of ammonium thiosulfate.
Its 2NH4HCO3+ SO2+ H2O →( NH4) 2SO3 +2 WATER +2 CO2 ↑; (NH4) 2SO3+ S →( NH4) 2S2O.
Carbon disulfide approach
Mix carbon disulfide as well as slightly excess fluid ammonia with water, react for about 20 hrs under the problems of pressure 5.88 × 105Pa and also temperature level 100 ° C, eliminate hydrogen sulfide from the response option by evaporation under lowered pressure, remove iron as well as heavy metals with ammonium sulfide at a liquid temperature of 105 ° C, filter, concentrate the filtrate under lowered pressure, cool and crystallize in a crystallizer, and after that centrifuge and dry to obtain ammonium thiocyanate.
Response formula: CS2 +3 NH3= NH4SCN+ NH4HSNH4HS= NH3 ↑+ H2S ↑.
Sulfur approach
Mix an appropriate amount of water and also sulfur powder into a slurry in a reactor, slowly include solid sodium cyanide in stages, and also react at concerning 110 ° C to produce salt thiocyanate, then add strong ammonium chloride to respond to generate ammonium thiocyanate, after that include barium thiocyanate to the reaction option to remove impurities as well as clarify, the supernatant is vaporized under lowered pressure, focused and also precipitated sodium chloride, and after that filtered, cooled and also crystallized, separated as well as dried to get ammonium thiocyanate.
Response formula: NaCN+ S= NaSCNNaSCN+ NH4Cl= NaCl+ NH4SCN.
Reference
- MSDS – Ammonium Thiosulfate
- J. J. Barbera; A. Metzger; M. Wolf (2012). “Sulfites, Thiosulfates, and Dithionites”. Ullmann’s Encyclopedia of Industrial Chemistry.
Ammonium Thiosulfate Supplier and Manufacturer
As a ammonium thiosulfate supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best ammonium thiosulfate raw materials to customers all over the world.
Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.
If you have a demand for ammonium thiosulfate and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.
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Pre-Sales Service
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* Every batch of products will be tested to ensure its quality.
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* Any inquiries will be replied to within 24 hours.
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* Product has any problem can return.
FAQ
Do you accept sample order?
We will make samples before mass production, and after the sample is approved, we’ll begin mass production. Doing 100% inspection during production, then doing random inspection before packing.
What’s your MOQ?
Our MOQ is 1kg. But usually we accept less quantities, such as 100g on the condition that the sample charge is 100% paid.
Is there a discount?
The different quantity has different discount.
HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS?
You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests, we will manufacture the products according to your requests.
Do you supply product report?
Yes. We’ll give you product analysis report before shipping.
Shipping
1. ≤50kg, Express delivery recommended, usually called DDU service;
2. ≤500kg, Air shipping recommended, usually called FOB, CFR, or CIF service;
3. >500kg, sea shipping recommended, usually called FOB, CFR, or CIF service;
4. For high-value products, please select air shipping and express delivery for safe.
Quality Control of Ammonium Thiosulfate
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