Sodium nitrate
The inorganic nitrate salt of sodium. — ChEBI
Safety documents & references
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Identity & molecular properties
Source-linked values| CAS number | 7631-99-4 | ChEBI ↗ |
| Molecular formula | NO3.Na | ChEBI ↗ |
| Molar mass | 84.994 g/mol | ChEBI ↗ |
| Monoisotopic mass | 84.97759 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:63005 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 84.995 g/mol | PubChem ↗ |
| Exact mass | 84.97758714 Da | PubChem ↗ |
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 identifiersodium nitratesodium nitrateVWDWKYIASSYTQR-UHFFFAOYSA-NO=[N+]([O-])[O-].[Na+]InChI=1S/NO3.Na/c2-1(3)4;/q-1;+1Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Safety classification · Japan
NITE / Japanese governmentSodium nitrate · 22B4522
| Endpoint | Reported classification |
|---|---|
| Oxidizing solids | Category 3 |
| Serious eye damage/eye irritation | Category 2B |
| Germ cell mutagenicity | Category 2 |
| Specific target organ toxicity - Single exposure | Category 1 (blood) |
| Specific target organ toxicity - Repeated exposure | Category 1 (blood) |
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 classificationMass ↔ amount of substance
Calculated from sourced massUses 84.994 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsONaNCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
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Sources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
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.