Molekula
Copper (II) oxide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Copper (II) oxide is a black crystalline solid composed of copper in its +2 oxidation state, widely used as a pigment in ceramics, a catalyst in chemical reactions, and in electronics for superconducting materials. This inorganic compound has a CAS number of 1317-38-0, with the molecular formula CuO and a molecular weight of 79.55 g/mol. It is stable under ambient storage conditions but requires careful handling, as indicated by its signal word "Warning." Molekula supplies Copper (II) oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — $47.20 per pack
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500 g — $135.80 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Orange/Red powder |
| Assay | ≥97% |
| Assay as Cu (Complexometric) | ≥86.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Monoclinic crystals or black powder |
| Melting Point | 1326 °C |
| Boiling Point | 1026 °C (decomp) |
| Solubility (other solvents) | Soluble in acids; difficultly soluble in water |
| Vapour Pressure | 0 mmHg (approx) |
Source: PubChem CID 164827 (HSDB, The National Institute for Occupational Safety and Health (NIOSH))
Identification
| Property | Value |
|---|---|
| SKU | 67300009 |
| CAS Number | 1317-38-0 |
| IUPAC Name | copper oxygen(2-) |
| EC Number | 215-706-6 |
| Molecular Formula | CuO |
| Molecular Weight | 79.55 |
| Exact Mass | 78.9245 |
| SMILES | [O-2].[Cu+2] |
| InChIKey | KKCXRELNMOYFLS-UHFFFAOYSA-N |
| InChI | InChI=1S/Cu.O/q+2;-2 |
| PubChem CID | 164827 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2825.50.2000 |
| Tariff Code | 2825500030 |
Safety & GHS
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Hazardous to the Environment
GHS09
Hazard statements
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Banacobru ol
- Black copper oxide
- Boliden Salt K-33
- Boliden-CCA Wood Preservative
- C.I. 77403
- Copper oxide (CuO)
- Copper Oxide 0.4
- Copper(2+) oxide
- Cuprite 3 Special Order
- Cuprum oxydatum nigrum
Frequently asked questions
What is copper(II) oxide commonly used for?
Copper(II) oxide is primarily used in the production of ceramics, glass, and as a pigment in paints, as well as in chemical synthesis and as a catalyst.
What is the chemical formula and molecular weight of copper(II) oxide?
The chemical formula is **CuO**, and the molecular weight is **79.55 g/mol**.
What safety classification does copper(II) oxide fall under?
Copper(II) oxide is classified with the signal word Warning because it is very toxic to aquatic life with long-lasting effects (H400, H410), so releases to the environment should be avoided.
How should copper(II) oxide be stored?
It should be stored in a **cool, dry place at ambient temperature**, away from incompatible substances.
Does Molekula supply copper(II) oxide in bulk quantities?
Yes, Molekula can supply copper(II) oxide in bulk, with quantities tailored to your requirements—please contact us for pricing and availability.
What documentation is provided with an order of copper(II) oxide?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.