# Sodium bicarbonate

**CAS:** 144-55-8  
**PubChem CID:** [516892](https://pubchem.ncbi.nlm.nih.gov/compound/516892)  
**Molecular formula:** NaHCO₃  
**Molar mass:** 84.007 g/mol  
**IUPAC:** sodium hydrogen carbonate  
**SMILES:** `C(=O)(O)[O-].[Na+]`  
**InChIKey:** `UIIMBOGNXHQVGW-UHFFFAOYSA-M`  
**InChI:** `InChI=1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 60.4 Ų |
| Hydrogen bond donors | 1 |
| Hydrogen bond acceptors | 3 |
| Rotatable bonds | 0 |
| Heavy atoms | 5 |

## 3D structure

The molecule contains 6 atoms connected by 5 chemical bonds. Interactive 3D model available at: https://molgod.org/molekula/144-55-8/

## Synonyms

- SODIUM BICARBONATE
- 144-55-8
- Sodium hydrogen carbonate
- Baking soda
- Sodium hydrogencarbonate
- Sodium acid carbonate
- Bicarbonate of soda
- Carbonic acid monosodium salt
- Monosodium carbonate
- Meylon

## Available in the shop

[Sodium Bicarbonate (CAS 144-55-8) — Xilong Scientific](https://molgod.org/sds-cards/sodium-bicarbonate-cas-no-144-55-cas-144-55-8-xilong-scientific/)

## Data sources

- [PubChem CID 516892](https://pubchem.ncbi.nlm.nih.gov/compound/516892)
- [Wikidata](https://www.wikidata.org/wiki/Q179731)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=144-55-8)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=144-55-8)

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*Last updated: 2026-09-02 · Generator: MOL-GOD v3.12.33*