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Molecule
Disodium Hydrogen Arsenate
CAS: 7778-43-0 · H3AsNa2O4
2D Structure
3D Structure
Loading 3D structure...
Basic Information
- CAS Registry Number
- 7778-43-0
- Molecular Formula
- H3AsNa2O4
- Molecular Mass
- 187.92 g/mol
Identifiers
CAS Registry Number
7778-43-0
SMILES
O=[As](O)(O)O.[Na].[Na]
InChI Key
NRYOMRCWNKNXOX-UHFFFAOYSA-N
InChI
InChI=1S/AsH3O4.2Na/c2-1(3,4)5;;/h(H3,2,3,4,5);;
Names and Synonyms
- Disodium Hydrogen Arsenate Common Name
- Arsenic acid (H3AsO4), sodium salt (1:2) Synonym
- Arsenic acid (H3AsO4), disodium salt Synonym
- Sodium biarsenate Synonym
- Disodium arsenate Synonym
- Disodium hydrogen arsenate Synonym
- Sodium arsenate (Na2HAsO4) Synonym
- Disodium hydrogen orthoarsenate Synonym
- Disodium monohydrogen arsenate Synonym
- Hydrogen sodium arsenate (HNa2AsO4) Synonym
- Sodium arsenate dibasic Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 187.92 g/mol | CAS Common Chemistry |
| 187.922 g/mol | RDKit | |
| 189.938 g/mol | chempirical lib | |
| Density | 1.87 g/cm³ | CAS Common Chemistry |
| 1.87 g/cm3 | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Disodium_hydrogen_arsenate | CAS Common Chemistry |
| Canonical SMILES | [Na].O=[As](O)(O)O | CAS Common Chemistry |
| InChI | InChI=1S/AsH3O4.2Na/c2-1(3,4)5;;/h(H3,2,3,4,5);; | CAS Common Chemistry |
| InChI Key | InChIKey=NRYOMRCWNKNXOX-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | 57 °C | CAS Common Chemistry |
| Name | Sodium arsenate (Na2HAsO4) | CAS Common Chemistry |
| Heavy Atom Count | 7 | RDKit |
| Hydrogen Bond Acceptors | 1 | RDKit |
| Hydrogen Bond Donors | 3 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 77.76 Ų | RDKit |
| LogP | -2.9322000000000004 | RDKit |
| -2.9322 | RDKit | |
| Molar Refractivity | 24.604899999999997 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.0 | RDKit |
| Exact Mass | 187.90426863599998 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
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1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
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120
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20
0 ppm
| Shift (ppm) | DEPT | Assignment |
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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 = 187.92 g/mol; density = 1.870 g/mL. Edit any field — others recompute live.
