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Molecule
Potassium Pyrosulfate
CAS: 7790-62-7 · H2K2O7S2
2D Structure
3D Structure
Loading 3D structure...
Basic Information
- CAS Registry Number
- 7790-62-7
- Molecular Formula
- H2K2O7S2
- Molecular Mass
- 256.34 g/mol
Identifiers
CAS Registry Number
7790-62-7
SMILES
O=S(=O)(O)OS(=O)(=O)O.[K].[K]
InChI Key
ACABCPPEQRRHDN-UHFFFAOYSA-N
InChI
InChI=1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)
Names and Synonyms
- Potassium Pyrosulfate Common Name
- Disulfuric acid, potassium salt (1:2) Synonym
- Pyrosulfuric acid, dipotassium salt Synonym
- Disulfuric acid, dipotassium salt Synonym
- Potassium pyrosulfate (K2S2O7) Synonym
- Dipotassium pyrosulfate Synonym
- Potassium pyrosulfate Synonym
- Potassium disulfate Synonym
- Dipotassium disulfate Synonym
- Potassium sulfate (K2S2O7) Synonym
- Potassium disulfate (K2S2O7) Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 256.34 g/mol | CAS Common Chemistry |
| 256.339 g/mol | RDKit | |
| 258.341 g/mol | chempirical lib | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Potassium_pyrosulfate | CAS Common Chemistry |
| Canonical SMILES | [K].O=S(=O)(O)OS(=O)(=O)O | CAS Common Chemistry |
| InChI | InChI=1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6) | CAS Common Chemistry |
| InChI Key | InChIKey=ACABCPPEQRRHDN-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | 335 °C | CAS Common Chemistry |
| Name | Potassium pyrosulfate | CAS Common Chemistry |
| Heavy Atom Count | 11 | RDKit |
| Hydrogen Bond Acceptors | 5 | RDKit |
| Hydrogen Bond Donors | 2 | RDKit |
| Rotatable Bonds | 2 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 117.97000000000001 Ų | RDKit |
| 117.97 Ų | RDKit | |
| LogP | -2.1529999999999996 | RDKit |
| -2.153 | RDKit | |
| Molar Refractivity | 35.6902 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.0 | RDKit |
| Exact Mass | 255.85160776400002 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
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3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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MW = 256.34 g/mol. Edit any field — others recompute live.
