Copper Powder, Copper Metallic Powder, Atomized Copper Powder, Spherical Copper Powder, Copper Granule, Copper Metallic Powder, 7440-50-8
COPPER POWDER – COPPER POWDER
1. CHEMICAL IDENTITY AND DEFINITION
| Parameter |
Information |
| Chemical Name |
Copper |
| Other Names |
Copper Metallic Powder, Atomized Copper Powder, Electrolytic Copper Powder, Micronized Copper, Nano Copper Powder, Copper Particles, Copper Pigment |
| Chemical Symbol |
Cu |
| Atomic Number |
29 |
| Atomic Weight |
63.546 g/mol |
| CAS Number |
7440-50-8 |
| EC Number (EINECS) |
231-159-6 |
| Purity |
≥ 99.9% |
| Appearance |
Reddish-orange / copper-colored fine powder |
| Odor |
Odorless |
| Physical State (20°C) |
Solid (powder) |
| Metal Class |
Transition metal |
2. WHAT IS COPPER POWDER?
Copper powder is a material consisting of finely ground or atomized copper particles. It has a reddish-orange color and possesses high electrical and thermal conductivity. It is a versatile metal powder used in many industries including electrical, electronics, metallurgy, chemicals, coatings, and 3D printing.
3. PRODUCTION METHODS
| Method |
Description |
| Atomization |
Molten copper sprayed with high-pressure gas or water |
| Electrolytic Production |
High-purity fine powder production via electrolysis |
| Chemical Reduction |
Chemical reduction of copper salts |
| Mechanical Grinding |
Grinding solid copper into powder |
| Hydrogen Reduction |
Reduction of copper oxides with hydrogen |
4. PHYSICAL PROPERTIES
| Property |
Value |
| Appearance |
Reddish-orange / copper-colored fine powder |
| Chemical Symbol |
Cu |
| Atomic Number |
29 |
| Atomic Weight |
63.546 g/mol |
| Density |
8.94 g/cm³ |
| Melting Point |
1,084.62 °C |
| Boiling Point |
2,562 °C |
| Particle Size |
15 – 250 microns |
| Specific Surface Area |
0.5 – 5 m²/g |
| Color |
Reddish-orange |
| Odor |
Odorless |
5. CHEMICAL PROPERTIES
| Property |
Information |
| Chemical Formula |
Cu |
| CAS Number |
7440-50-8 |
| EC Number |
231-159-6 |
| Purity |
≥ 99.9% |
| Common Oxidation States |
+1, +2 |
| Stability |
Stable in air, slowly oxidizes |
| Corrosion Resistance |
Good (natural oxide layer) |
| Reactivity |
Soluble in acids, sensitive to oxidizing agents |
| Oxide Layer |
Thin Cu₂O/CuO layer on surface |
6. ELECTRICAL AND THERMAL PROPERTIES
| Property |
Value |
| Electrical Conductivity |
59.69 m/Ω·mm² |
| Electrical Resistivity (20°C) |
1.68 × 10⁻⁸ Ω·m |
| Electrical Conductivity (IACS) |
~100% |
| Thermal Conductivity |
385 W/m·K |
| Coefficient of Thermal Expansion |
16.5 × 10⁻⁶ /K |
| Specific Heat (20°C) |
385 J/kg·K |
| Latent Heat of Fusion |
205 kJ/kg |
7. PARTICLE SIZE DISTRIBUTION
| Grade |
Particle Size |
Applications |
| Coarse Powder |
150 – 250 μm |
Powder metallurgy, sintering |
| Medium Powder |
50 – 150 μm |
3D printing, coatings |
| Fine Powder |
15 – 50 μm |
Electronics, catalysts |
| Micronized Powder |
5 – 15 μm |
Paints, pigments, catalysts |
| Nano Powder |
< 1 μm |
Specialty applications, nanomaterials |
8. POWDER MORPHOLOGY TYPES
| Type |
Description |
| Spherical Powder |
Produced by atomization; high flowability |
| Irregular Powder |
Produced by grinding; high surface area |
| Dendritic Powder |
Electrolytic production; porous structure |
| Flake Powder |
Flake form; for coatings and paints |
9. APPLICATIONS
9.1. Electrical and Electronics
| Application |
Description |
| Circuit Boards |
Conductive ink for PCBs and flexible circuits |
| Motor Parts |
Electric motor components |
| Electrical Contacts |
Switches, relays, and connectors |
| Conductive Adhesives |
Electrically conductive adhesives |
| Electromagnetic Shielding |
EMI/RFI shielding materials |
9.2. Metallurgy and Powder Metallurgy
| Application |
Description |
| Sintering |
Powder metallurgy parts production |
| Alloy Production |
Bronze, brass, copper alloys |
| Automotive Parts |
Bearings, bushings, gears |
| Copper Alloys |
Powder metallurgy alloys |
9.3. 3D Printing Technology
| Application |
Description |
| Metal 3D Printing |
Laser powder bed fusion (L-PBF, DED) |
| Prototype Production |
Precision part manufacturing |
| Custom Parts |
Pre-production prototypes |
| Medical Implants |
Specialty medical applications |
9.4. Chemical and Catalyst Industry
| Application |
Description |
| Catalysts |
Hydrogenation and oxidation reactions |
| Chemical Synthesis |
Organic and inorganic syntheses |
| Petrochemicals |
Refinery catalysts |
| Environmental Chemistry |
Water and air treatment |
9.5. Coatings and Paint Applications
| Application |
Description |
| Antifouling Paints |
Marine coatings, boat protection |
| Conductive Paints |
Electromagnetic shielding |
| Decorative Coatings |
Conductive inks |
| Protective Coatings |
Wear and corrosion protection |
9.6. Other Applications
| Application |
Description |
| Welding Electrodes |
Welding consumables |
| Lubricants |
Solid lubricant additives |
| Brake Pads |
Wear resistance |
| Antimicrobial Products |
Bactericidal properties |
| Pyrotechnics |
Fireworks and special effects |
10. ADVANTAGES OF COPPER POWDER
| Advantage |
Description |
| High Electrical Conductivity |
Second highest conductivity among all metals |
| High Thermal Conductivity |
Excellent thermal conductivity |
| Corrosion Resistance |
Natural protective oxide layer |
| Antimicrobial Properties |
Natural effect against bacteria and viruses |
| Recyclability |
100% recyclable |
| High Purity |
≥ 99.9% purity options |
| Versatility |
Wide range of applications |
| Ductility |
Easily formable |
11. RECOMMENDED USAGE RATES
| Application |
Recommended Rate (%) |
| Conductive Inks |
60 – 85 |
| Sintering |
90 – 100 |
| 3D Printing |
95 – 100 |
| Catalysts |
0.1 – 5 |
| Coating Paints |
30 – 70 |
| Polymer Composites |
5 – 30 |
| Lubricant Additives |
1 – 10 |
12. POWDER METALLURGY PROCESS
| Step |
Description |
| 1. Mixing |
Copper powder + binder + other additives |
| 2. Compaction |
High-pressure shaping in a mold |
| 3. Sintering |
Heat treatment in furnace at 700-900°C |
| 4. Cooling |
Controlled cooling |
| 5. Finishing |
Sizing, surface treatment |
13. SAFETY AND HEALTH INFORMATION
| Parameter |
Information |
| Hazard |
Low toxicity |
| Dust |
Inhalation may cause respiratory irritation |
| Metal Fume Fever |
Prolonged exposure (melting fumes) |
| Skin Contact |
May cause mechanical irritation |
| Eye Contact |
May cause mechanical irritation |
| Ingestion |
Low toxicity |
| Carcinogenicity |
Not classified |
| Mutagenicity |
Negative |
| Aquatic Toxicity |
Moderate toxicity |
13.1. FIRST AID MEASURES
| Route of Exposure |
Action |
| Inhalation |
Remove to fresh air. If respiratory irritation, seek medical attention. |
| Skin Contact |
Wash with plenty of soap and water. |
| Eye Contact |
Rinse thoroughly with water for at least 15 minutes. Seek medical attention. |
| Ingestion |
Rinse mouth. Seek medical attention. |
14. STORAGE AND HANDLING
| Parameter |
Information |
| Storage Conditions |
Cool, dry, well-ventilated area |
| Container Requirements |
Tightly closed, under inert gas (preferred) |
| Protect From |
Moisture, acids, oxidizing agents, strong bases |
| Shelf Life |
12-24 months (with proper storage) |
| Oxidation |
Slowly oxidizes in air; color change during long-term storage |
| Dust Precautions |
Prevent dust formation; dust explosion hazard |
15. TRANSPORT INFORMATION
| Parameter |
Information |
| UN Number |
3089 |
| Hazard Class |
4.1 (Flammable Solid) |
| Packing Group |
III |
| ADR/RID |
4.1 |
| IMDG Code |
4.1 |
| IATA (Air) |
4.1 |
| Marine Pollutant |
No |
16. PACKAGING OPTIONS
| Packaging Type |
Quantity |
Material |
| Kraft Bag |
25 kg |
Kraft + PE liner |
| Plastic Bucket |
5-25 kg |
HDPE |
| Plastic Drum |
25-50 kg |
HDPE |
| Big Bag |
500-1000 kg |
Polypropylene |
| Aluminum Foil Bag |
1-5 kg |
Laminated aluminum |
17. REGULATORY STATUS
| Region / Authority |
Status |
| European Union (REACH) |
Registered substance |
| USA (EPA TSCA) |
Listed on TSCA inventory |
| Turkey |
Registered substance |
| China |
Listed on inventory |
| Japan (CSCL) |
Listed on CSCL inventory |
18. OTHER NAMES AND SYNONYMS
| Type |
Name |
| Turkish Names |
Bakır Tozu, Mikronize Bakır, Nano Bakır Tozu, Bakır Partikülleri |
| English Names |
Copper Powder, Copper Metallic Powder, Atomized Copper Powder, Electrolytic Copper Powder, Flake Copper Powder |
| CAS Number |
7440-50-8 |
19. SUMMARY AND CRITICAL WARNINGS
Product Summary
| Parameter |
Value |
| Product |
Copper Powder |
| CAS Number |
7440-50-8 |
| Purity |
≥ 99.9% |
| Appearance |
Reddish-orange / copper-colored powder |
| Particle Size |
15 – 250 μm |
| Density |
8.94 g/cm³ |
| Melting Point |
1,084.62 °C |
| Primary Applications |
Electrical, electronics, metallurgy, 3D printing, coatings |
CRITICAL WARNINGS
1. Dust Explosion Hazard: Copper powder is combustible in air. Dust clouds can pose an explosion risk. Keep away from sparks, open flames, and static electricity. Proper grounding must be ensured.
2. Particle Size Selection: Select the appropriate particle size based on application. Spherical powder (15-50 μm) for 3D printing, fine powder (5-15 μm) for catalysts.
3. Oxidation: Copper powder slowly oxidizes in air. Oxide layer may reduce conductivity. Use inert atmosphere or anti-oxidant coating to prevent oxidation.
4. Purity: For high-purity applications (electronics, 3D printing), ≥99.9% purity powder should be used.
5. Antimicrobial Properties: Copper has natural antimicrobial properties. Certification may be required for specialty applications.
6. Storage: Store in a dry, inert environment. Inert gas (N₂, Ar) storage is recommended to prevent oxidation.
7. Recycling: 100% recyclable. Copper scrap has high commercial value.
8. Transport: UN 3089, Class 4.1 (Flammable Solid). Packing Group III.
9. Metal Fume Fever: Prolonged exposure to melting or welding fumes may cause metal fume fever. Ensure proper ventilation.
10. Conductivity: In electrical applications, the oxide layer may reduce conductivity. Surface treatment may be required.
11. Coating Applications: Exhibits antifouling properties in marine coatings. Formulations should comply with environmental regulations.
12. 3D Printing: Spherical morphology powders provide better flowability and density in 3D printing.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is prepared based on available technical data. The user is responsible for determining the suitability of the product for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, use, handling, disposal, and regulatory compliance information, refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. This document is not a substitute for professional or medical advice.
