We use cookies to improve your online experience. By continuing browsing this website, we assume you agree our use of cookies.
Oxide Powder

Cuprous Oxide Cu2O powder CAS 1317-39-1

Item No.: TR-Cu2O
Cuprous oxide is a bright red powder, almost insoluble in water, disproportionated into divalent copper and copper in acidic solution, and gradually oxidized into black copper oxide in moist air.
Purity: 99%
Particle size: 50nm, micron
Copper (I) Oxide Properties

About Cuprous Oxide Cu2O powder:

Cuprous oxide, or copper oxide cu2o, is an oxide of monovalent Copper. 

Specification for Cu2O powder Cuprous Oxide powder
Particle size : 1;   100nm (spherical);
                               300-500nm (spherical or irregularity);
                         2;   0.5-1um (spherical or irregularity)
                         3;   325mesh
chemical  result,wt%
Cu2O total  98.71
Cu metal 0.5
Cu2O 97.7
Cu total 88
Chloride 0.048
Sulphate(SO42-) 0.002
H2O 0.01
For more information XRD or SEM please contact us. 


What is the correct chemical name for Cu2O? 

Cuprous oxide, Copper (1+) oxide-copper, or Dicopper oxide is the correct chemical name for Cu2O.

Cu2O is a bright red powdery solid, almost insoluble in water. It disproportionates to divalent Copper and copper elements in an acidic solution and gradually oxidizes to black in the humid air. Copper oxide. Cuprous oxide is mainly used to manufacture antifouling paint on the bottom of ships (used to kill low-level marine animals), insecticides, various copper salts, analytical reagents, red glass, copper plating, and copper alloy plating solutions.

If used and stored following the specifications, the cuprous oxide will not decompose, and there is no known dangerous reaction; avoid oxides, moisture/humidity, and air. Cuprous oxide does not generate copper salts in dilute sulfuric and nitric acid. It will quickly turn blue in the air.

Although cuprous oxide is stable in dry air, it will slowly oxidize in humid air to produce copper oxide so that it can be used as an oxygen scavenger; in addition, it can be easily reduced to metallic Copper with a reducing agent. Cuprous oxide is insoluble in water, and it dissolves by forming a complex with aqueous ammonia solution and concentrated hydrohalic acid. It is easily soluble in an alkaline aqueous solution.


Cuprous oxide for sale

TRUNNANO is a trusted global Cuprous Oxide supplier. Feel free to inquire about the latest Cuprous Oxide price at any time.


What is the difference between CuO and Cu2O?

Cu2O is cuprous oxide, and CuO is cupric oxide.

Cu2O was obtained by a solution of copper oxide metal or an oxidation solution (II) solution of the sulfur oxide solution. CuO was obtained by extracting copper metal metallurgical methods from the ore. Many wood preservatives are made of Copper. It is also used as pigments to produce different glazes.


Is cuprous oxide dangerous?

Ingestion Toxic if swallowed. Skin May be harmful if absorbed through the skin. It may cause skin irritation. Eyes May cause eye irritation.


Performance of Cuprous Oxide Cu2O powder:

Cuprous oxide, also named Copper I Oxide, is an inorganic compound with the formula Cu2O. It is one of the principal oxides of Copper. This brown-red solid powder is a component of some antifouling paints.

Cuprous nanoparticles are a stable, red solid powder formed by reducing Cu2+ solutions and contain Cu+ ions in linear coordination with oxygen.

Technical Parameter of Cuprous Oxide Cu2O powder:


























How is Cuprous Oxide Cu2O powder produced?

The main methods for preparing cuprous oxide are as follows:

1. Dry method: After removing impurities, the copper powder is mixed with copper oxide and then sent into the calcining furnace to be heated to 800-900°C to be calcined into cuprous oxide. After taking it out, use a magnet to absorb mechanical impurities, and then pulverize to 325 mesh to prepare cuprous oxide. If copper sulfate is used as the raw material, the copper in the copper sulfate is first reduced with iron, and the subsequent reaction steps are the same as the method using copper powder as the raw material.

2. Glucose reduction method: the copper sulfate solution is mixed with glucose and then added with sodium hydroxide solution to react to produce the cuprous oxide, which is filtered, rinsed, dried, and crushed to obtain the cuprous oxide product.

3. Electrolysis method in iron: in the electrolytic cell lined with polyvinyl chloride, the cast copper plate is used as the anode, the red copper plate is used as the cathode, potassium chromate is used as the additive, and the salt solution is used as the electrolyte. Under the conditions of 290~310g/L, potassium chromate 0.3~0.5g/L, temperature 70~90 ℃, pH 8~12, current density 1500 A/m2, electrolysis will produce the cuprous oxide, which will be separated by precipitation, rinsed, Filter and dry to obtain cuprous oxide.

4. Hydrazine reduction method: Pour 3~5mL 20% hydrazine aqueous solution into 50mL high-concentration copper acetate aqueous solution to reduce the divalent copper ions. The solution turns green at first and generates nitrogen gas. After some time, yellow to orange-yellow cuprous oxide is precipitated. The residue was washed with water, ethanol, and ether. Because excessive hydrazine can further reduce the cuprous oxide to metallic copper, the amount of hydrazine should not be excessive. 
How do you make Cu2O? Several methods may produce copper (I) oxide. Most straightforwardly, it arises via the oxidation of copper metal: 4 Cu + O2 → 2 Cu2O. Additives such as water and acids affect the rate of this process and the further oxidation to copper(II) oxides.

5. Glucose reduction synthesis method of film solution: 50g copper sulfate pentahydrate and 75g potassium sodium tartrate are dissolved in 200 cold water, and the two are mixed when the solution is cooled to room temperature. In addition, 75 g of sodium hydroxide was dissolved in 200 mL of water to prepare an alkaline solution. While stirring the mixed solution, slowly add the alkali solution, and be careful to maintain the solution's temperature so that the solution's temperature does not rise and the solution turns dark blue. The divalent copper salt solution is heated to a boil, and 10% glucose solution is added until the blue color disappears and red cuprous oxide is precipitated. Then, put it in 1L of cold water, let it stand for about 15 minutes, discard the supernatant liquid, add water, and stir. After decantation, Filter with a Buchner funnel; wash the precipitate twice with 15mL water, wash it with ethanol three times, and then dry it in an air bath.

6. Direct oxidation of metallic copper: Use platinum wire to hang metallic copper in a vertical tubular electric furnace and heat it at 1000°C for 24 hours in a nitrogen atmosphere containing 1% (volume fraction) of oxygen to obtain cuprous oxide. The stoichiometric mixture of metallic copper and copper oxide is enclosed in a vacuum tube and heated at 1000° C for 5 hours to react to obtain cuprous oxide.


Cuprous Oxide uses / Cu2O uses:

Cupric oxide is a pigment in ceramics to produces blue, red, and green, and sometimes gray, pink, or black glazes. It is also incorrectly used as a dietary supplement in animal feed. Due to low bioactivity, negligible copper is absorbed. It is also used when welding with copper alloys. In marine coatings, cuprous oxide is commonly used as a pigment, fungicide, and antifouling agent. Besides that, what is cuprous oxide used for?

1. Suitable for pesticides.

2. Suitable for antibacterial fibers and clothes.

3. Cuprous oxide is also suitable for agricultural fungicides.

4. As an antiseptic, it is suitable for ship primers to prevent pollution and microorganisms.

5. Used in the manufacture of various copper salts and analytical reagents.

6. Used as a catalyst for organic synthesis.

Storage Condition of Cuprous Oxide Cu2O powder:
Cuprous Oxide Cu2O powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition, should avoid the heavy pressure, according to ordinary goods transportation.

Packing & Shipping of Cuprous Oxide Cu2O powder:
It is packed in double plastic bags inside, which can be filled with argon in a vacuum; it can be vacuumed and filled with argon for protection.
Cuprous Oxide Cu2O powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Cuprous Oxide Cu2O powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
If you are looking for high-quality Cu2O powder, please feel free to contact us and send an inquiry. ([email protected])

Copper (I) Oxide Properties

Other Names cuprous oxide, red copper oxide, dicopper oxide, Cu2O powder
CAS No. 1317-39-1
Compound Formula Cu2O
Molecular Weight 143.09
Appearance Brownish-red Powder
Melting Point 1235 °C
Boiling Point 1800 °C
Density 6.0 g/cm3
Solubility in H2O N/A
Exact Mass 141.854 g/mol

Copper (I) Oxide Health & Safety Information

Signal Word Warning
Hazard Statements H302 + H332-H319-H410
Hazard Codes Xn, N
Risk Codes 22-50/53
Safety Statements 22-60-61
Transport Information UN 3077 9 / PGIII
Amorphous Boron Powder | High Purity Graphite Powder | Boride Powder | 3D Printing Powder | Zinc Sulfide ZnS Powder | Oxide Powder | Silicide Powder