# 焦硫酸钠 (CAS 13870-29-6)

**CAS:** 13870-29-6  
**PubChem CID:** [156591895](https://pubchem.ncbi.nlm.nih.gov/compound/156591895)  
**Molecular formula:** Na₂O₇S₂  
**Molar mass:** 201.14 g/mol  
**SMILES:** `OS(=O)(=O)OS(=O)(=O)O.[Na]`  
**InChIKey:** `HRDAJTRXAABFOE-UHFFFAOYSA-N`  
**InChI:** `InChI=1S/Na.H2O7S2/c;1-8(2,3)7-9(4,5)6/h;(H,1,2,3)(H,4,5,6)`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 135 Ų |
| Hydrogen bond donors | 2 |
| Hydrogen bond acceptors | 7 |
| Rotatable bonds | 2 |
| Heavy atoms | 10 |

## 3D structure

The molecule contains 12 atoms connected by 10 chemical bonds. Interactive 3D model available at: https://molgod.org/molekula/13870-29-6/

## Synonyms

- RefChem:931930
- 13870-29-6
- Disulfuric acid, disodium salt
- Sodium Pyrosulfate
- SCHEMBL29863512

## Available in the shop

[焦硫酸钠 (CAS 13870-29-6) — Beijing Tong Guang](https://molgod.org/sds-cards/%e7%84%a6%e7%a1%ab%e9%85%b8%e9%92%a0-cas-13870-29-6-beijing-tong-guang-2/)

## Data sources

- [PubChem CID 156591895](https://pubchem.ncbi.nlm.nih.gov/compound/156591895)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=13870-29-6)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=13870-29-6)

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