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Chemical substance record

Dinitrogen

7727-37-9N228.014 g/mol
ElementChEBI source record

An elemental molecule consisting of two trivalently-bonded nitrogen atoms. — ChEBI

Safety references

Safety documents & references

1 indexed references
JP · NITE

Government GHS classification

21A3543 · FY2009

View classification

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Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.

Identity & molecular properties

Source-linked values
CAS number7727-37-9ChEBI ↗
Molecular formulaN2ChEBI ↗
Molar mass28.014 g/molChEBI ↗
Monoisotopic mass28.00615 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:17997ChEBI ↗

Cross-source molecular data

PubChem
Molar mass28.014 g/molPubChem ↗
Exact mass28.006148008 DaPubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier
dinitrogen
dinitrogen
IJGRMHOSHXDMSA-UHFFFAOYSA-N
N#N
InChI=1S/N2/c1-2

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

antiviral agentantidepressantantipsychotic agentcardiovascular drugantineoplastic agentantifungal agentfood packaging gasfood propellant

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Safety classification · Japan

NITE / Japanese government
Japan · FY2009 source classification
Nitrogen · 21A3543
EndpointReported classification
Gases under pressureCompressed gas

Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.

Read the original NITE classification

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.0356964 mol

Uses 28.014 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
N
Nitrogen · 2 atoms
100.00%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations
Plants can use protein as a nitrogen source without assistance from other organisms. ↗Proceedings of the National Academy of Sciences of the United States of America · 2008 Mar 18 · PMID 18334638

Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:17997

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 947 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.