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chromium(IV) oxide

chemical compound
Class type of: chromium oxide Q2366389

Facts

13 properties
Instance of
type of chemical entity
Subclass of
chromium oxide[4]
Canonical SMILES
[O-2].[O-2].[Cr+4][2]
Chemical formula
CrO₂[3]
Crystal system
tetragonal crystal system[5]
Density
+4890.0[8]
Has part(s) of the class
oxygen, chromium[11][12]
Mass
+83.93[9]
Melting point
+648.15[10]
Point group
ditetragonal-dipyramidal[6]
Space group
space group P4₂/mnm[7]
Standard enthalpy of formation
-75.31[14]
Standard molar entropy
+269.24[13]
🏷️ Also known as
en chromium dioxide en chromium(IV) oxide en chromium oxide ar أكسيد الكروم الرباعي cs Oxid chromičitý de Chrom(IV)-oxid es dióxido de cromo es óxido de cromo(IV) fa اکسید کروم(IV) fi kromidioksidi fr dioxyde de chrome hi क्रोमियम(IV) ऑक्साइड it Diossido di cromo ja 酸化クロム(IV) ko 산화 크로뮴(IV) nl chroom pl tlenek chromu(IV) ro Oxid de crom ru оксид хрома(IV) sv Kromdioxid
🔖 Identifiers · 25
CAS Registry Number
12018-01-8
COD ID
9007540
ChEBI ID
48263
ChemSpider ID
34987119
DSSTOX compound identifier
DTXCID7033579
DSSTox substance ID
DTXSID7065174
EC number
234-630-4
ECHA Substance Infocard ID
100.031.470
Encyclopædia Britannica Online ID
science/chromium-dioxide
Freebase ID
/m/0cf_21
Gmelin number
18391
HSDB ID
1620
Show all 25 identifiers +13
ICSC ID
1310
InChI
InChI=1S/Cr.2O/q+4;2*-2
InChIKey
IAQWMWUKBQPOIY-UHFFFAOYSA-N, AYTAKQFHWFYBMA-UHFFFAOYSA-N
Microsoft Academic ID (discontinued)
2781184570
PesticideInfo chemical ID
PRI2074
PubChem CID
73415796
RTECS number
GB6400000
RxNorm CUI
1312546
ScienceDirect topic ID
chemistry/chromium-dioxide
SureChEMBL ID
139979, 119614
UNII
7BHJ7466GL
UniChem compound ID
27306474
ZVG number
5070

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🔗 Connections
Has part(s) 2
oxygen, chromium
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Summary

chromium(IV) 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.

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). chromium(IV) oxide. Retrieved November 7, 2026, from https://4ort.xyz/entity/chromium-iv-oxide
MLA “chromium(IV) oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 Nov. 2026, https://4ort.xyz/entity/chromium-iv-oxide.
BibTeX @misc{4ortxyz_chromium-iv-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{chromium(IV) oxide}}, year = {2026}, url = {https://4ort.xyz/entity/chromium-iv-oxide}, note = {Accessed: 2026-11-07}}
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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 → 5070
    "Changed claim: ZVG number: 5070, см. / see autofix на / on P679"
  2. 6w ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    ZVG number → 5070
    "Created claim: ZVG number: 005070, batch #275042"
  3. 11w ago · Baum64 · 2026-08-23 view diff on Wikidata ↗
    Point group → ditetragonal-dipyramidal
    Melting point → 648.15
    Has part(s) → —
    Standard enthalpy of formation → -75.31
    + 2 other properties 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 → tetragonal crystal system
    COD ID → 9007540
    Space group → space group P4₂/mnm
    Density → 4,890
    "Created claim: COD ID: 9007540, batch #269136"
  5. 20w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Instance of → type of chemical entity
    Subclass of → chromium oxide
    Mass → 83.93
    Has part(s) → —
    "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.