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perchloric acid

chemical compound
Class type of: monoprotic acid, chlorine oxoacid Q193956

Facts

13 properties
Instance of
type of chemical entity
Subclass of
monoprotic acid, chlorine oxoacid[4][5]
Boiling point
+203[16]
Canonical SMILES
OCl(=O)(=O)=O[2]
Chemical formula
HClO₄[3]
Density
+1.76[13]
Has part(s)
hydrogen, oxygen, chlorine, perchloryl group, hydroxyl[6][7][8][9][10]
MCN code
2811.19.30[12]
Mass
+99.956336[14]
Melting point
-102[15]
PKa
-10[11]
Safety classification and labelling
NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response[18]
Standard enthalpy of formation
-40.4[17]
🏷️ Also known as
en HClO4 en perchloric acid ar حمض البيركلوريك cs HClO4 cs kyselina chloristá da Perklorsyre de Hydrogen-tetraoxochlorat(−I) de Perchlorsäure de HClO4 de Chlor(VII)-säure de Überchlorsäure el Υπερχλωρικό οξύ es Ácido perclórico es Acido perclorico es Acido perclórico es Ácido perclorico fa پرکلریک اسید fi HClO4 fi perkloorihappo fr 7601-90-3
🔖 Identifiers · 43
Library of Congress authority ID
sh89001749
GND ID
4341998-7
OpenAlex ID
C2778161354
Image (Wikimedia Commons)
Perchloric acid 60 percent.jpg ↗
CAMEO Chemicals ID
1292
CAS Registry Number
7601-90-3
ChEBI ID
29221
ChemSpider ID
22669
DSSTOX compound identifier
DTXCID6027004
DSSTox substance ID
DTXSID8047004
EC number
231-512-4
ECHA Substance Infocard ID
100.028.648
Show all 43 identifiers +31
Elhuyar ZTH ID
029501
Encyclopædia Britannica Online ID
science/perchloric-acid
Freebase ID
/m/0fn9p
Gmelin number
2137
Gran Enciclopèdia Catalana ID
acid-percloric
Gran Enciclopèdia Catalana ID (former scheme)
0130918
Great Norwegian Encyclopedia ID
perklorsyre
HCIS ID
3429
HSDB ID
1140
Human Metabolome Database ID
HMDB0256308
ICSC ID
1006
InChI
InChI=1S/ClHO4/c2-1(3,4)5/h(H,2,3,4,5)
InChIKey
VLTRZXGMWDSKGL-UHFFFAOYSA-N
Interlingual Index ID
i114148
J-GLOBAL ID
200907054100624845
KBpedia ID
HydrogenPerchlorate
Lex ID
perklorsyre
Microsoft Academic ID (discontinued)
2778161354
NDL Authority ID
00564389
National Library of Israel J9U ID
987007541765405171
Nikkaji ID
J43.590B
PubChem CID
24247
Quora topic ID
Perchloric-Acid
RTECS number
SC7500000
Römpp online ID
RD-16-00980
SureChEMBL ID
153001, 6611
UN number
1873
UNII
V561V90BG2
UniChem compound ID
334970
Yale LUX ID
concept/a50aa568-2b9d-4043-8aa2-64ced1fb7b98
ZVG number
3960

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🔗 Connections
Has part(s) 4
hydrogen, oxygen, chlorine, hydroxyl
Subclass of 1
monoprotic acid
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Summary

perchloric acid 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.

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). perchloric acid. Retrieved November 4, 2026, from https://4ort.xyz/entity/perchloric-acid
MLA “perchloric acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Nov. 2026, https://4ort.xyz/entity/perchloric-acid.
BibTeX @misc{4ortxyz_perchloric-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{perchloric acid}}, year = {2026}, url = {https://4ort.xyz/entity/perchloric-acid}, note = {Accessed: 2026-11-04}}
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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. 5w ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    ZVG number → 3960
    "/* wbsetclaimvalue:1| */ ZVG number: 3960, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  2. 6w ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    ZVG number → 3960
    "/* wbcreateclaim-create:1| */ ZVG number: 003960, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  3. 23w ago · Twofivesixbot bot · 2026-05-24 view diff on Wikidata ↗
    Instance of → type of chemical entity
    Safety classification and labelling → NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response
    Boiling point → {'amount': '+203'}
    PKa → {'amount': '-10'}
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|3 */ National Library of Israel J9U ID: 987007541765405171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.