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copper(II) oxide

chemical compound
Class type of: copper oxide Q421787
copper(II) oxide
User Walkerma on en.wikipedia · Public Domain · Wikimedia

Facts

23 properties
Instance of
type of chemical entity
Subclass of
copper oxide[4]
Associated hazard
copper(II) oxide exposure
Boiling point
+2000[13]
Canonical SMILES
O=[Cu][2]
Chemical formula
CuO[3]
Crystal system
monoclinic crystal system[5]
Decomposition point
+1879[14]
Density
+6.4[10]
Described by source
Meyers Konversations-Lexikon, 4th edition (1885–1890)[8]
Has part(s) of the class
oxygen, copper[18][19]
Immediately dangerous to life or health
+100[16]
Mass
+78.924512[11]
Melting point
+1446[12]
NIOSH Pocket Guide ID
0151[9]
Point group
monoclinic-prismatic[6]
Safety classification and labelling
NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response
Space group
space group 15[7]
Standard enthalpy of formation
+306.27, -156.06[23][24]
Standard molar entropy
+234.62, +42.59[21][22]
Subject has role
trace metal[20]
Time-weighted average exposure limit
+0.1[17]
Vapor pressure
+0[15]
🏷️ Also known as
en copper oxide en copper(II) oxide en cupric oxide en copper monoxide en Cu(II) oxide ar أكسيد النحاس الثنائي ar Copper(II) oxide ar أكسيد نحاس ثنائي ar CuO cs Oxid měďnatý cs CuO cs Kysličník měďnatý da Kobber(II)oxid da CuO de Kupfer(II)-oxid de Kupfermonoxid de CuO de Cuprioxyd es Oxido de cobre(II) es Oxido cuprico
🔖 Identifiers · 37
CAB ID
311386
CAS Registry Number
1317-38-0
COD ID
1571907
ChEBI ID
47286
ChemSpider ID
144499
DSSTOX compound identifier
DTXCID101333885
DSSTox substance ID
DTXSID5034488
EC number
215-269-1
ECHA Substance Infocard ID
100.013.882
Encyclopædia Britannica Online ID
science/cupric-oxide
Freebase ID
/m/04dpyy
HCIS ID
5663
Show all 37 identifiers +25
HSDB ID
266
IEDB Epitope ID
190360
InChI
InChI=1S/Cu.O
InChIKey
QPLDLSVMHZLSFG-UHFFFAOYSA-N
KBpedia ID
CopperIIOxide
MeSH descriptor ID
C030973
Microsoft Academic ID (discontinued)
2778874844
Museum-digital tag ID
2021, 10509
NDF-RT ID
N0000148095, N0000146051, N0000146019
NSC number
83537
PDB ligand ID
C1O
PDB structure ID
1GSK, 1OF0, 1AOZ, 3G5W
PesticideInfo chemical ID
PRI2244
Probes And Drugs ID
PD073858
PubChem CID
164827, 14829
Quora topic ID
Copper-Oxide-1
RTECS number
GL7900000
Reaxys registry number
8128137
RxNorm CUI
21837
Spectral Database for Organic Compounds ID
40119
SureChEMBL ID
22084, 980035
UMLS CUI
C0056598
UNII
V1XJQ704R4
UniChem compound ID
24509339
ZVG number
1990

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🔗 Connections
Has part(s) 2
oxygen, copper
Belongs to 1
tenorite
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Summary

copper(II) oxide is a type of chemical entity[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . wikidata.org.
  19. [20] ↑ . wikidata.org.
  20. [21] ↑ . wikidata.org.
  21. [22] ↑ . wikidata.org.
  22. [23] ↑ . wikidata.org.
  23. [24] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). copper(II) oxide. Retrieved November 11, 2026, from https://4ort.xyz/entity/copper-ii-oxide
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    ZVG number → 1990
    "Changed claim: ZVG number: 1990, см. / see autofix на / on P679"
  2. 7w ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    ZVG number → 1990
    "Created claim: ZVG number: 001990, batch #275042"
  3. 11w ago · Baum64 · 2026-08-23 view diff on Wikidata ↗
    Point group → monoclinic-prismatic
    Has part(s) → —
    Standard enthalpy of formation → 306.27, -156.06
    Has part(s) of the class → oxygen, copper
    + 1 other property edited (see Wikidata diff for full list)
    "Created claim: Has part(s) of the class: oxygen, batch #269324"
  4. 12w ago · Baum64 · 2026-08-18 view diff on Wikidata ↗
    Crystal system → monoclinic crystal system
    COD ID → 1571907
    Space group → space group 15
    "Created claim: COD ID: 1571907, batch #269136"
  5. 20w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Density → 6.4
    Vapor pressure → 0
    UNII → V1XJQ704R4
    Decomposition point → 1,879
    + 12 other properties edited (see Wikidata diff for full list)
    "Changed [tr] labels, descriptions or aliases: QuickStatements 3.0 batch #37300"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.