Overview
Copper (CAS 7440-50-8 ), abbreviated Cu and approved as food colorant E115 , is a base metal supplied in refined elemental form for industrial, agricultural, and chemical processing applications.
It functions as a biocide, catalyst, and conductive material across a broad range of manufacturing and treatment processes. In water treatment, copper is used in algaecide and antifouling systems.
These systems control microbial growth in cooling towers, reservoirs, and distribution infrastructure. Agriculture relies on copper-based formulations, including fungicides and soil amendments, to manage crop disease.
It is also used to correct mineral deficiencies in livestock feed. Electronics and surface finishing industries consume refined copper for electroplating, conductive coatings, and printed circuit board fabrication.
In chemical processing, copper serves as a catalyst or catalyst precursor in hydrogenation, oxidation, and organic synthesis reactions. Copper is supplied as cathode sheets, powder, granules, wire, and flakes.
Purity grades range from standard technical to high-purity electrolytic (99.99%). Powder grades are available in varying mesh sizes to suit catalyst preparation, pigment blending, or metallurgical applications.
Recognized commercial grades include electrolytic tough pitch (ETP) and oxygen-free (OF) copper for electrical and precision uses. This material meets rigorous industrial and chemical specifications.
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Physical Properties
| Melting Point | 1083 °C |
| Boiling Point | 2595 °C |
| Density | 8.94 g/cm³ |
| Flash Point | -23 °C |
| Appearance | Copper is a reddish-brown metal which occurs free or in ores, such as malachite, cuprite, and chalcopyrite. |
| Color | Rust-brownish |
| Form | wire |
| Water Solubility | insoluble |
| Vapor Pressure | 0Pa at 20℃ |
| pH | 3.2 (20°C in H2O) |
Safety & Handling
Warning GHS09 GHS07 GHS08 Hazard Statements H302 Harmful if swallowed H317 May cause an allergic skin reaction H335 May cause respiratory irritation H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H411 Toxic to aquatic life with long lasting effects Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P333+P317 Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed.
Trade & Regulatory
| HS Code | 74081900 |
| UN Number | 3089 |
| ADR Class | 4.1 |
| Packing Group | II |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 7440-50-8
- EC Number
- 231-159-6
- Mol. Weight
- 63.55
- HS Code
- 74081900
- Category
- Pigments & Colorants