Sodium hydrogencarbonate
Sodium hydrogencarbonate is indexed in ChEBI under CHEBI:32139, with the reported formula CHO3.Na. Use the source record and structural identifiers below to confirm the material you need. — ChEBI
Safety documents & references
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Identity & molecular properties
Source-linked values| CAS number | 144-55-8 | ChEBI ↗ |
| Molecular formula | CHO3.Na | ChEBI ↗ |
| Molar mass | 84.006 g/mol | ChEBI ↗ |
| Monoisotopic mass | 83.98234 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:32139 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 84.007 g/mol | PubChem ↗ |
| Exact mass | 83.98233817 Da | PubChem ↗ |
| Topological polar surface area (Ų) | 60.4 | PubChem ↗ |
| H-bond donors | 1 | PubChem ↗ |
| H-bond acceptors | 3 | PubChem ↗ |
| Rotatable bonds | 0 | 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 hydrogencarbonatesodium hydrogencarbonateUIIMBOGNXHQVGW-UHFFFAOYSA-MO=C([O-])O.[Na+]InChI=1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1Classification & 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 hydrogen carbonate · 25A0045
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 84.006 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsONaCHCalculated 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.