
Cupferron CAS 135-20-6 Supplier | Analytical Reagent & Chemical Raw Material

Cupferron CAS 135-20-6
CAS:135-20-6 | C6H9N3O2 |MW:155.15 | EINECS NO:205-183-2
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Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Transporta: Ocean, Land,Air, DHL,TNT
Port: Shanghai Port, Qingdao Port
Description
Cupferron, also known as ammonium N-nitroso-N-phenylhydroxylamine, is a chemical compound with CAS No. 135-20-6 and molecular formula C6H9N3O2. It has a molecular weight of approximately 155.15 g/mol and is commonly described as a cream-white to light yellow crystalline solid. Published chemical references report a melting point around 163–164°C, while its chelating behavior makes it useful in analytical chemistry, particularly for the separation and precipitation of metal ions.
For laboratories and industrial users, the value of Cupferron CAS 135-20-6 comes from its ability to form complexes with certain metal ions. It has been used as an analytical reagent for the separation of copper, iron, vanadium, thorium, tin and zinc, as well as in analytical procedures involving vanadates, titanium and aluminum. These characteristics make Cupferron chemical reagent relevant to analytical chemistry, inorganic chemistry, metal analysis, laboratory testing and chemical research.
For buyers, product identity and specification are important when sourcing this material. Depending on the intended application, purchasing teams may compare Cupferron purity, appearance, solubility, analytical performance, packaging and supporting documentation before approving a supplier. Commercial reagent products are available in defined grades and specifications, so buyers should always compare the supplier’s current specification with their own testing requirements.
| Property | Information |
|---|---|
| Product Name | Cupferron |
| CAS No. | 135-20-6 |
| Chemical Name | Ammonium N-nitroso-N-phenylhydroxylamine |
| Molecular Formula | C6H9N3O2 |
| Molecular Weight | 155.15 g/mol |
| Appearance | Cream-white to light yellow crystalline solid |
| Melting Point | Approx. 163–164°C |
| Chemical Type | Chelating / analytical reagent |
| Main Application | Metal ion separation and analytical chemistry |
| Solubility | Soluble in water, alcohol and ether |
| Synonyms | Cupferon, Kupferron, Ammonium Cupferron |
| EC Number | 205-183-2 |
Product Images & Packaging



Product Parameters
| Cupferron Chemical Properties |
| Melting point | 150-155 °C (dec.) (lit.) |
| Boiling point | 278.95°C (rough estimate) |
| density | 1.3092 (rough estimate) |
| refractive index | 1.6500 (estimate) |
| storage temp. | 2-8°C |
| solubility | well soluble in water and ethanol. |
| form | Powder |
| color | Needles from water |
| Water Solubility | <0.1 g/100 mL at 18.5 ºC |
| Merck | 14,2622 |
| BRN | 3919107 |
| Stability: | Stable, but may be moisture sensitive. Incompatible with strong oxidizing agents, strong bases, strong acids. |
Why Source Cupferron from Zhishang Bio?
For buyers of Cupferron CAS 135-20-6, supplier selection often comes down to three practical questions: Can the material meet the required specification? Can the supplier maintain consistent supply? And can the supplier provide the documents needed for purchasing and quality review?
Zhishang Bio focuses on the supply of chemical raw materials, pharmaceutical-related materials and specialty chemicals for international customers. For Cupferron orders, we can organize product information around the buyer’s intended application and provide the available specification, packaging details and quality documents for evaluation.
Controlled Production and Quality Management
Cupferron is a chemically defined material, so consistency between batches matters for laboratories and industrial users. Our production and quality workflow can be arranged around controlled raw materials, reaction conditions, separation, purification, drying and final quality inspection, with product release based on the applicable specification.
For customers requiring analytical documentation, available quality records may include a Certificate of Analysis (COA), Safety Data Sheet (SDS) and product specification. The exact testing items and acceptance criteria should be confirmed before an order is placed.
Supply Capacity and Inventory
For regular customers, we can coordinate production planning and inventory according to order volume and delivery requirements.
- Current supply capacity: 5 MT/month
- Available stock: 15 MT
- Standard package: 220 kg/drum or bag
- Sample availability: Yes
- Bulk order support: Yes
These figures should be updated according to the current production and warehouse situation before publication. We recommend buyers confirm available inventory and lead time with our sales team before placing time-sensitive orders.
Practical Support for International Buyers
A chemical supplier is not only responsible for providing a product name and price. Buyers also need clear communication about specification, packaging, documentation and delivery.
For Cupferron wholesale and bulk purchasing, Zhishang Bio can discuss package size, order quantity, documentation requirements and shipping arrangements before production or shipment. This helps purchasing teams evaluate the total supply condition rather than comparing price alone.
Cupferron's Procurement Guide
Procurement Guidelines
1. Sample Policy
We can provide a 2-3g free trial package (shipping fee required)
2. Batch procurement
Packaging: 25kg/bag; 220kg/barrel; Special packaging according to your needs
MOQ:1kg
3. Customized services
Concentration customization (90% -99%)
Paeonol’s outsourcing services

FAQ
Cupferron is the ammonium salt of N-nitroso-N-phenylhydroxylamine. Its CAS number is 135-20-6, with a molecular formula of C6H9N3O2 and a molecular weight of approximately 155.15 g/mol. It is commonly supplied as a crystalline solid and is mainly associated with analytical and metal-ion separation applications.
Cupferron is primarily used as an analytical reagent because it can form complexes with certain metal ions. Published references describe its use in the separation and precipitation of metals such as copper, iron, vanadium and thorium, as well as analytical procedures involving several other metals.
When purchasing Cupferron CAS 135-20-6, buyers should check the product specification, purity or assay, appearance, packaging, batch information and available quality documentation. For laboratory or industrial applications, it is also useful to confirm whether the supplier can provide a COA, SDS and product specification that match the buyer’s requirements.
For Cupferron bulk supply, buyers should provide the required quantity, specification, package size and destination so the supplier can confirm current inventory or production availability. Zhishang Bio can discuss sample requirements, documentation, packaging, production scheduling and delivery arrangements according to the customer’s purchasing plan.
Related References
Manufacturer of Cupferron
Zhishang Bio is based in Shandong, serves the whole country, faces the world, and is determined to become an excellent supplier and service provider in the chemical industry.
As a top manufacturer of cosmetic raw materials, disinfectants, flavors and fragrances in China, we are committed to producing high-quality products and have won high praise from customers all over the world.
In the next 10 years or even longer, Zhishang Bio will always adhere to the tenet of quality first and reputation first, and devote itself to providing customers with thoughtful and perfect services.
As a professional Cupferron manufacturer, Zhi shang Bio has served more than 6,000 customers around the world. Because of our high-quality products and professional services, we have won high praise from most of our customers.
Zhishang Bio is a professional enterprise engaged in the research and development, production, and sales of chemical raw materials. It has a strong supply chain system and strict quality control standards to ensure the provision of high-quality products with high purity and stability to customers.
Zhishang Bio’s core strength is its independent research and design capabilities. It has advanced production equipment, testing laboratories and can customize chemical raw materials to meet the market demands. This includes pharmaceuticals, electronic, coatings and agricultural applications.
Zhishang Bio’s supply chain management is based on long-term relationships with domestic and international suppliers of high quality to guarantee a stable supply, optimize logistic systems, and achieve efficient distribution. This helps reduce the cost of customer purchases.
We adhere to international environmental standards and we also adhere to the concept that environmental protection and safety production are important. All production processes must comply with these standards in order to guarantee that our products will be green and sustainable.
With a professional technical team and comprehensive after-sales service, Zhishang Bio can provide customers with precise technical support, solve application problems, and help customers enhance product competitiveness.
We are always customer-oriented and committed to becoming a trusted chemical raw material partner.
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1. Custom-made Supply Solutions
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2. Strict quality assurance
Zhishang Bio utilizes advanced screening equipment and stringent quality examination procedures, in addition to various other files, to guarantee that every batch of products is certified with international criteria such ISO GMP, REACH, and so on. Customers are also given with full quality records and conformity documents.
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DO YOU ACCEPT SAMPLE ORDER?
We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.
WHAT’S YOUR MOQ?
Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.
IS THERE A DISCOUNT?
Different quantity has different discount.
HOW TO CONFIRM WHETHER THE PRODUCT QUALITY MEETS OUR NEEDS BEFORE PLACING AN ORDER?
You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.
DO YOU SUPPLY PRODUCT REPORT?
Yes. We’ll give you product analysis report before shipping.
LEARN MORE ABOUT US
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1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
Company Info
The company integrates research and development, production, and trade, with a modern production base, advanced testing equipment, and an experienced technical team to ensure that products reach industry-leading levels in purity, stability, and environmental friendliness.






