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hydrogen azide

unstable, toxic chemical compound
Class type of: monoprotic acid, azide, nitrogen hydride Q408925

Facts

16 properties
Instance of
type of chemical entity
Subclass of
monoprotic acid, azide, nitrogen hydride[4][5][6]
Boiling point
+37, +35.7[17][18]
Canonical SMILES
N=[N+]=[N-][2]
Chemical formula
HN₃[3]
Conjugate base
azide ion[21]
Density
+1.09[14]
Described by source
Encyclopædia Britannica 11th edition, Great Soviet Encyclopedia (1926–1947), Armenian Soviet Encyclopedia, vol. 1[10][11][12]
Different from
trichlormethine[13]
Electric dipole moment
+1.70[19]
Has part(s)
nitrogen, hydrogen[7][8]
Ionization energy
+10.72[20]
Mass
+43.017[15]
Melting point
-80[16]
PKa
+4.64[9]
Safety classification and labelling
NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response[22]
🏷️ Also known as
en N3H en azoimide en hydrazoic acid en hydrogen azide en HN3 en azoimid en [NNNH] en triazoic acid en HN₃ ar حمض الهيدرازويك cs Azoimid cs Kyselina azoimidová cs Azidovodík cs Kyselina dusíkovodíková cs kyselina azidovodíková cs N3H cs HN3 de HN3 de Stickstoffwasserstoffsäure es Acido azotidrico
🔖 Identifiers · 36
Library of Congress authority ID
sh85063479
GND ID
4183290-5
OpenAlex ID
C2779632193
BNCF Thesaurus ID
31773
CAS Registry Number
7782-79-8
ChEBI ID
29449
ChEMBL ID
CHEMBL186537
ChemSpider ID
22937
DSSTOX compound identifier
DTXCID701023866
DSSTox substance ID
DTXSID20884425
Dewey Decimal Classification
546.71122
EC number
231-965-8
Show all 36 identifiers +24
ECHA Substance Infocard ID
100.029.059
Encyclopædia Britannica Online ID
science/hydrazoic-acid
Freebase ID
/m/05ccw9
Gmelin number
773
Gran Enciclopèdia Catalana ID
acid-hidrazoic
Gran Enciclopèdia Catalana ID (former scheme)
0114210
Great Russian Encyclopedia Online ID (2017)
1805053
HSDB ID
7858
Human Metabolome Database ID
HMDB0253241
InChI
InChI=1S/HN3/c1-3-2/h1H
InChIKey
JUINSXZKUKVTMD-UHFFFAOYSA-N
Interlingual Index ID
i113815
J-GLOBAL ID
200907053566841459
Microsoft Academic ID (discontinued)
2779632193
National Library of Israel J9U ID
987007533733705171
Nikkaji ID
J59.889E
OSHA Occupational Chemical Database ID
795
PesticideInfo chemical ID
PRI3567
PubChem CID
24530
SureChEMBL ID
166 (166–16.2M, n=3)
UNII
6P5C4D5D7I
UniChem compound ID
85124
WordNet 3.1 Synset ID
14636942-n
ZVG number
570246

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🔗 Connections
Has part(s) 2
hydrogen, nitrogen
Subclass of 2
azide, monoprotic acid
Described by source 1
Encyclopædia Britannica 11th edition
Different from 1
trichlormethine
← Different from 1
trichlormethine
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Summary

hydrogen azide 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] ↑ . PubChem. Retrieved . wikidata.org.
  2. [3] ↑ . PubChem. Retrieved . 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] ↑ . PubChem. Retrieved . wikidata.org.
  15. [16] ↑ . Basic laboratory and industrial chemicals: A CRC quick reference handbook. wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . Basic laboratory and industrial chemicals: A CRC quick reference handbook. wikidata.org.
  18. [19] ↑ . Basic laboratory and industrial chemicals: A CRC quick reference handbook. wikidata.org.
  19. [20] ↑ . Basic laboratory and industrial chemicals: A CRC quick reference handbook. wikidata.org.
  20. [21] ↑ . wikidata.org.
  21. [22] ↑ . 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). hydrogen azide. Retrieved November 4, 2026, from https://4ort.xyz/entity/hydrogen-azide
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BibTeX @misc{4ortxyz_hydrogen-azide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{hydrogen azide}}, year = {2026}, url = {https://4ort.xyz/entity/hydrogen-azide}, 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. 23w ago · Twofivesixbot bot · 2026-05-25 view diff on Wikidata ↗
    PKa → {'amount': '+4.64'}
    Density → {'unit': 'Q13147228', 'amount': '+1.09'}
    Boiling point → {'unit': 'Q25267', 'amount': '+37'}, {'unit': 'Q25267', 'amount': '+35.7'}
    Instance of → —
    + 14 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|1 */ National Library of Israel J9U ID: 987007533733705171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.