- Potassium pyrosulfate
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- $0.00 / 25kg
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2025-12-01
- CAS:7790-62-7
- Min. Order: 1kg
- Purity: 98%
- Supply Ability: 1000kg
- Potassium pyrosulfate
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- $10.00/ kg
-
2025-02-13
- CAS:7790-62-7
- Min. Order: 1kg
- Purity: 99.99%
- Supply Ability: 10 tons
- Potassium pyrosulfate
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- $1.00 / 1KG
-
2019-07-14
- CAS:7790-62-7
- Min. Order: 1KG
- Purity: 995
- Supply Ability: 25kg
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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.) | | bulk density | 830kg/m3 | | 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 | | TSCA | TSCA listed | | HS Code | 2833 29 80 | | HazardClass | 8 | | PackingGroup | II |
| | Potassium pyrosulfate Usage And Synthesis |
| Chemical Properties | Potassium pyrosulphate, also known as potassium disulfate, appears as colorless needles or as a white crystalline powder or fused pieces. It is soluble in water, converting to potassium bisulfate. Specifically, it dissolves in cold water but decomposes in hot water to form potassium sulfate. It melts below 300 °C and decomposes at higher temperatures. This compound exhibits strong oxidizing properties and can form sulfates through eutectic fusion with certain metal oxides that are insoluble in water and acids. | | Uses |
Potassium disulfate (K2S2O7) can be used:
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As a salt catalyst for the conversion of hemicellulose into reducing sugars such as xylose and galactose by mechanocatalysis .
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In the preparation of diacylbenzenes via Pd-catalyzed decarboxylative acylation of aromatic ketones with oxocarboxylic acids.
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As an oxidant for the preparation of monosubstituted triazoles from aryl azides and propargyl alcohol using Ag2O as a catalyst.
| | Uses | Acid flux in analysis, laboratory reagent. | | Uses | Potassium disulfite supported on silica may be used for the synthesis of ethyl pyruvate. | | Preparation | Potassium pyrosulphate is obtained by heating potassium hydrogen sulphate to its melting point. | | General Description | Potassium disulfite (Potassium pyrosulfate) has been synthesized from potassium hydrogen sulfate, via melting. | | Flammability and Explosibility | Non flammable | | References | [1] P.J. MINEELY S. A T. Molten potassium pyrosulfate: The reactions of seven metal oxalates[J]. Thermochimica Acta, 1987, 114 2: Pages 281-286. DOI:10.1016/0040-6031(87)80049-7.
[2] CHUNBIN GUO. A novel perspective process for alumina extraction from coal fly ash via potassium pyrosulfate calcination activation method[J]. Journal of Cleaner Production, 2020, 271 1: 122703. DOI:10.1016/j.jclepro.2020.122703. |
| | Potassium pyrosulfate Preparation Products And Raw materials |
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