Substance profile
Copper oxide (CuO)
Copper oxide (CuO) is black to brownish-black amorphous or crystalline powder or granules.
01 · Identification
What Copper oxide (CuO) is
Copper oxide (CuO) is black to brownish-black amorphous or crystalline powder or granules. Its molecular formula is CuO and its molecular weight is 79.55 g/mol. It boils at 1026 °C, melts at 1326 °C, is soluble in water.
Under the GHS it carries the signal word Warning.
02 · Identifiers
Copper oxide (CuO) identifiers and molecular data
Copper oxide (CuO) CAS number and EC number
Copper oxide (CuO) molecular formula and molecular weight
Other names for Copper oxide (CuO)
- copper(II) oxide
03 · GHS classification
Copper oxide (CuO) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Copper oxide (CuO) pictograms and signal word
Copper oxide (CuO) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | GHS09 |
Copper oxide (CuO) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Copper oxide (CuO). The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Copper oxide (CuO)
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Copper oxide (CuO) issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Copper oxide (CuO) precautionary statements
CLP Annex VI assigns 3 precautionary statements to Copper oxide (CuO). They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Copper oxide (CuO) name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | меден(II) оксид |
| Spanish español | Óxido de cobre (II) |
| Czech čeština | oxid měďnatý |
| Danish dansk | kobber(II)oxid |
| German Deutsch | Kupfer(II)-oxid |
| Estonian eesti | vask(II)oksiid |
| Greek ελληνικά | οξείδιο του χαλκού (II) |
| English English | copper(II) oxide |
| French français | oxyde de cuivre(II) |
| Croatian hrvatski | bakar(II) oksid |
| Italian italiano | ossido di rame (II) |
| Latvian latviešu | vara(II) oksīds |
| Lithuanian lietuvių | vario (II) oksidas |
| Hungarian magyar | réz(II)-oxid |
| Maltese Malti | ossidu tar-ram(II) |
| Dutch Nederlands | koper(II)oxide |
| Polish polski | tlenek miedzi(II) |
| Portuguese português | óxido de cobre (II) |
| Romanian română | oxid de cupru (II) |
| Slovak slovenčina | oxid meďnatý |
| Slovenian slovenščina | bakrov (II) oksid |
| Finnish suomi | kupari(II)oksidi |
| Swedish svenska | koppar(II)oxid |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Copper oxide (CuO) GHS label elements
Everything CLP Annex VI fixes for Copper oxide (CuO), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Copper oxide (CuO)
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Avoid release to the environment.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Copper oxide (CuO) in the GHS label constructor →
07 · Health hazards
Copper oxide (CuO) health hazards and exposure limits
Copper oxide (CuO) hazard summary
Acute copper poisoning after ingestion can cause liver injury, methemoglobinemia, and hemolytic anemia. Acute renal failure may result, secondary to massive hemoglobinuria. [Goldfrank, p. 1259] May cause irritation; Harmful by ingestion; [Alfa Aesar MSDS] See Copper.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Copper oxide (CuO) occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 1.0 [mg/m3], as Cu | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | TWA 0.1 mg/m3 | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | TWA 0.1 mg/m3 | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 100.0 [mg/m3], as Cu | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 100 mg/cu m (as Cu) | Hazardous Substances Data Bank (HSDB) |
| IDLH | 100 mg/m3 (as Cu) | The National Institute for Occupational Safety and Health (NIOSH) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Copper oxide (CuO) properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Copper oxide (CuO) boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 1026 °C (1878.8 °F) | decomp | HSDB |
| Decomposes | decomposes | NIOSH | |
| Decomposes at 1026 | decomposes | DrugBank |
Copper oxide (CuO) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 1326 °C (2418.8 °F) | HSDB | |
| 1227 °C (2240.6 °F) | DOE PAC | ||
| 1026 °C (1879 °F) | decomposes | NIOSH |
Copper oxide (CuO) density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 6.4 g/cm³ | CuO | NIOSH |
| 6.4 g/cm³ | at 25 °C | DOE PAC | |
| 6.315 g/cm³ | at 14 °C | HSDB |
Copper oxide (CuO) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Practically insol in water, alc; sol in dilute acids, alkali cyanides, ammonium carbonate soln; slowly sol in ammonia | HSDB | |
| SOL IN AMMONIUM CHLORIDE, POTASSIUM CYANIDE | HSDB | ||
| Soluble in acids; difficultly soluble in water | HSDB |
Copper oxide (CuO) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0 mmHg | approx | NIOSH |
Copper oxide (CuO) lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Explodes when heated with powdered aluminum; anilinium perchlorate; hydrogen; magnesium; and phthalic anhydride. | HSDB | |
| CuO: Noncombustible Solid | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Copper oxide (CuO) storage and handling
Copper oxide (CuO) incompatible materials
BORON REACTS VIOLENTLY WITH CUPRIC OXIDE AFTER WARMING, MELTING GLASS TUBING.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Copper oxide (CuO) in the storage compatibility matrix →
10 · Questions
Copper oxide (CuO) — frequently asked questions
What is the CAS number of Copper oxide (CuO)?
The CAS number of Copper oxide (CuO) is 1317-38-0. Its EC number is 215-269-1.
What is the chemical formula of Copper oxide (CuO)?
The molecular formula of Copper oxide (CuO) is CuO and its molecular weight is 79.55 g/mol.
What does a Copper oxide (CuO) label have to show?
Under CLP Annex VI the label for Copper oxide (CuO) carries the pictogram Environment and the signal word is Warning.
Is Copper oxide (CuO) flammable?
CLP Annex VI assigns Copper oxide (CuO) no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Copper oxide (CuO) a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Copper oxide (CuO). Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Copper oxide (CuO)?
The US occupational exposure limit reported for Copper oxide (CuO) is 1.0 [mg/m3], as Cu (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Copper oxide (CuO)?
The boiling point reported for Copper oxide (CuO) is 1026 °C (1878.8 °F), decomp (HSDB).
What is the melting point of Copper oxide (CuO)?
The melting point reported for Copper oxide (CuO) is 1326 °C (2418.8 °F) (HSDB).
Nearby
Substances next to Copper oxide (CuO)
Keep going: substances starting with C, or search the whole database by name, CAS number, pictogram or signal word.