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| | Potassium pyrosulfate Basic information |
| Product Name: | Potassium pyrosulfate | | Synonyms: | POTASSIUM HYDROGEN SULFATE;POTASSIUM PYROSULFATE;POTASSIUM PYROSULPHATE;POTASSIUM DISULFATE;Disulfuricacid,dipotassiumsalt;DIPOTASSIUM DISULFATE;DI-POTASSIUM DISULPHATE;POTASSIUM DISULFATE R. G. | | CAS: | 7790-62-7 | | MF: | K2O7S2 | | MW: | 254.32 | | EINECS: | 232-216-8 | | Product Categories: | Inorganics | | Mol File: | 7790-62-7.mol |  |
| | Potassium pyrosulfate Chemical Properties |
| Melting point | 325 °C | | density | 2.28 g/mL at 25 °C (lit.) | | storage temp. | no restrictions. | | solubility | H2O: 0.1 M at 20 °C, clear, colorless | | form | Solid | | Specific Gravity | 2.28 | | color | White | | PH | 0.8 (50g/l, H2O, 20℃) | | Odor | Odorless | | PH Range | 1 - 2 at 25.5 g/l at 25 °C | | Water Solubility | MAY DECOMPOSE | | Sensitive | Hygroscopic | | Merck | 14,7664 | | Stability: | Stable. Incompatible with strong acids, strong bases. | | CAS DataBase Reference | 7790-62-7(CAS DataBase Reference) | | EPA Substance Registry System | Disulfuric acid, dipotassium salt (7790-62-7) |
| Hazard Codes | C | | Risk Statements | 34 | | Safety Statements | 26-36/37/39-45 | | RIDADR | UN 3260 8/PG 2 | | WGK Germany | 3 | | HS Code | 2833 29 80 | | HazardClass | 8 | | PackingGroup | II |
| | Potassium pyrosulfate Usage And Synthesis |
| Chemical Properties | Colorless needles or white, crystalline
powder or fused pieces.
Soluble in water ( converted to potassium bisulfate).
| | Uses | Acid flux in analysis, laboratory reagent.
| | Uses | Potassium disulfate (K2S2O7) can be used:
- As a salt catalyst for the conversion of hemicellulose into reducing sugars such as xylose and galactose by mechanocatalysis .
- In the preparation of diacylbenzenes via Pd-catalyzed decarboxylative acylation of aromatic ketones with oxocarboxylic acids.
- As an oxidant for the preparation of monosubstituted triazoles from aryl azides and propargyl alcohol using Ag2O as a catalyst.
| | Uses | Potassium disulfite supported on silica may be used for the synthesis of ethyl pyruvate. | | General Description | Potassium disulfite (Potassium pyrosulfate) has been synthesized from potassium hydrogen sulfate, via melting. | | Flammability and Explosibility | Nonflammable |
| | Potassium pyrosulfate Preparation Products And Raw materials |
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