Sodiumpyrosulphate
disodium disulphate
CAS: 13870-29-6
Molecular Formula: Na2O7S2
Sodiumpyrosulphate - Names and Identifiers
| Name | disodium disulphate |
| Synonyms | disulfuric acid SODIUM DISULFATE disodium disulfate Disodium disulfate Sodiumpyrosulphate SODIUM PYROSULFATE Sodium pyrosulfate disodium disulphate Disodium disulphate SodiuM anhydrosulfate Disulfuricacid,disodiumsalt Sodium acid sulfate anhydrous Disulfuric acid, disodium salt |
| CAS | 13870-29-6 |
| EINECS | 237-625-5 |
| InChI | InChI=1/2Na.2H2O4S/c;;2*1-5(2,3)4/h;;2*(H2,1,2,3,4)/q2*+1;;/p-4 |
Sodiumpyrosulphate - Physico-chemical Properties
| Molecular Formula | Na2O7S2 |
| Molar Mass | 222.11 |
| Density | 2.67 |
| Melting Point | 396 °C |
| Boling Point | 330°C at 760 mmHg |
| Solubility | Soluble in water and decompose at 460 ℃. Soluble in water to form sodium bisulfate, the solution is acidic, soluble in fuming sulfuric acid, insoluble in ethanol. |
| Vapor Presure | 3.35E-05mmHg at 25°C |
| Appearance | Solid |
| Storage Condition | Room Temprature |
| Use | Acid melting agent, molten ore. |
Sodiumpyrosulphate - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| HS Code | 28331900 |
Sodiumpyrosulphate - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | acidic melting agent, molten ore. |
| production method | 1. the reagent sodium bisulfate monohydrate is heated to 200~250 ℃ to melt, the salt boils and loses crystal water, and then the temperature is raised to 320 ℃: when light sulfur trioxide smoke appears in the molten salt, the reaction is over, and after a little cooling, it can be crushed. |
Last Update：2024-04-09 21:01:54
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