Free Sample Cupferron CAS 135-20-6


Free Sample Cupferron CAS 135-20-6

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  • Min: 10 Gram
  • Delivery: 7 Days
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  • Port: Shanghai Port, Qingdao Port


Name: Cupferron
Cas: 61789-32-0
Purity: 99%min
Brand: zhishang chem

Chemical Formula: 

Basic Info:

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.



Cupferron is an important analytical reagent, which is the ammonium salt of n-nitrosohydroxylamine, commonly known as cupferron. Usually, it is white or light yellow, bright scaly crystal, with sweet taste. After a long time, the color will darken due to slow decomposition, but in fact, it can also be used in analysis. It is easily soluble in water, benzene, alcohol and ether. The reagent is thermally decomposed into nitrobenzene by chemicalbook. It is unstable in light and air and needs to be stored in a brown ground reagent bottle. Usually, a small amount of ammonium carbonate wrapped in paper or cloth is placed in the bottle as a preservative and placed in a sealed, dark and cool place. It can be used as precipitant and solvent extractant of copper, iron, tin, titanium, vanadium, chromium and other elements, and the determination of rare earth as masking agent.


Product NameCupferron
CAS No.135-20-6
Appearance  white
Content99% min
Shelf Life2 years
Packing1kg/bag,25kg/bag or as your requirements


Colorimetric determination of aluminum, bismuth, copper, iron, mercury, zinc, manganese, niobium, gallium, tantalum, thorium, titanium, vanadium, tin and other elements. Quantitative determination of iron in strong acid solution, quantitative analysis of vanadate, separation of copper and iron when together with other metals, as a masking agent when measuring rare earth.

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1. ≤50kg, we recommend express delivery, usually called DDU service;

2. ≤500kg, air transportation is generally recommended, usually called FOB, CFR or CIF service;

3.>500kg, sea freight is generally recommended, usually called FOB, CFR or CIF service;

4. For high-value products, please choose air and express to ensure the safety of the products.


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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.

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Yes. We’ll give you product analysis report before shipping.