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| CAS No.: | 13870-29-6 |
|---|---|
| Name: | Sodium pyrosulfate |
| Molecular Structure: | |
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| Formula: | Na2S2O7 |
| Molecular Weight: | 222.10 |
| Synonyms: | Disulfuricacid, disodium salt (9CI);Pyrosulfuric acid, disodium salt (8CI);Sodiumpyrosulfate (6CI);Disodium disulfate;Disodium pyrosulfate;Pyrosulfuric acidsodium salt (1:2);Sodium disulfate;Sodium pyrosulfate (Na2S2O7);Sodiumsulfate (Na2S2O7); |
| EINECS: | 237-625-5 |
| Density: | 2.475g/cm3 |
| Melting Point: | 396 °C |
| Boiling Point: | 330 °C at 760 mmHg |
| Appearance: | solid |
| Safety: | 24/25 |
| PSA: | 140.39000 |
| LogP: | 0.08500 |
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Specification
The Sodium pyrosulfate ,its cas register number is 13870-29-6.It also can be called as Disodium disulfate and the IUPAC name about this chemicals is disodium disulfate .It belongs to the Inorganics. It has another related registry number is 7783-05-3 (Parent). Following are the chemical properties about this chemical:(1)Enthalpy of Vaporization: 62.94 kJ/mol ; (2)Vapour Pressure: 3.35E-05 mmHg at 25°C
The Sodium pyrosulfate is a colorless translucent crystals or white lumps and have hygroscopicity.It can soluble in water and to be sodium bisulfate, the solution is acid, also soluble in fuming sulfuric acid and insoluble in alcohol. It is a salt of sodium and pyrosulfate, also, it can be obtained by the dehydration of sodium bisulfate. This is an intermediate stage in the preparation of sulfur trioxide.
This chemicals can be described computed from structure:
(1)Canonical SMILES: [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Na+].[Na+]
(2)InChI: InChI=1S/2Na.2H2O4S/c;;2*1-5(2,3)4/h;;2*(H2,1,2,3,4)/q2*+1;;/p-4
(3)InChIKey: ZQOMKIOQTCAGCM-UHFFFAOYSA-J