Rhenate (ReO41-), potassium, (T-4)-
Potassium perrhenate(VII)
CAS: 10466-65-6
Molecular Formula: KO4Re
Rhenate (ReO41-), potassium, (T-4)- - Names and Identifiers
| Name | Potassium perrhenate(VII) |
| Synonyms | POTASSIUM PERRHENATE POTASSIUM PERRHENATE(VII) Potassium perrhenate(VII) potassiumrheniumoxide(kreo4) PERRHENIC ACID POTASSIUM SALT potassium oxido(trioxo)rhenium (beta-4)-rhenate(reo41-potassium Rhenate (ReO41-), potassium, (T-4)- |
| CAS | 10466-65-6 |
| EINECS | 233-953-8 |
| InChI | InChI=1/K.4O.Re/q+1;;;;-1;/rK.O4Re/c;1-5(2,3)4/q+1;-1 |
Rhenate (ReO41-), potassium, (T-4)- - Physico-chemical Properties
| Molecular Formula | KO4Re |
| Molar Mass | 289.3 |
| Density | 4.887 g/mL at 25 °C (lit.) |
| Melting Point | 550 °C (lit.) |
| Boling Point | 1370 °C |
| Water Solubility | Soluble in water. |
| Appearance | Crystalline |
| Specific Gravity | 4.887 |
| Color | White |
| Refractive Index | 1.643 |
| Physical and Chemical Properties | Boiling Point: 1370 Melting Point: 550 density: 4.88 |
| Use | For the preparation of pure rhenium |
Rhenate (ReO41-), potassium, (T-4)- - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S17 - Keep away from combustible material. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1479 5.1/PG 2 |
| WGK Germany | 3 |
| RTECS | SE1400000 |
| TSCA | Yes |
| Hazard Class | 5.1 |
| Packing Group | II |
Rhenate (ReO41-), potassium, (T-4)- - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | potassium perrhenate is a white crystalline powder with a density of 4.89g/cm3 and a melting point of 550 ℃, boiling point 1360~1370 ℃. Refractive index 1.643, slightly soluble in water, insoluble in ethanol. The solubility varies greatly with temperature. The solubility is 0.36g at 0 °c and 3.3g at 50 °c. If KCl or other potassium salts are added, the solubility is less. |
| Application | potassium perrhenate can be used as a strong oxidant, and also used in spectral analysis, tungsten cathode coating color film and as a catalyst. Potassium perrhenate is used as a strong oxidant for the synthesis of technetium and rhenium organometallic radiopharmaceuticals. |
| Use | for the preparation of pure rhenium oxidant. Spectral analysis. Preparation of rhenium compounds. |
| production method | potassium hydroxide or potassium carbonate is formed by dissolving perrhenium acid. Take 500g of the perrhenium acid or heptanium oxide, dissolve in 500ml of water, filter, boil the filtrate, and neutralize with 5% potassium hydroxide (neutral red as an indicator) with constant stirring to precipitate a large number of white crystals. Cooling, Suction filtration crystallization, drying, to obtain the finished product. The mother liquor can be used to dissolve the high rhenium acid (or seven rhenium oxide) in the next batch of synthesis, or concentrated treatment. |
| category | oxidant |
| toxicity grade | poisoning |
| Acute toxicity | intraperitoneal-mouse LD50: 692 mg/kg |
| explosive hazard characteristics | mixed with reductant, sulfur, phosphorus, etc, friction can burst |
| flammability hazard characteristics | toxic potassium oxide smoke from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Light loading and light unloading; With organic matter, reducing agent, sulfur, separate storage of phosphorus flammability |
| fire extinguishing agent | water, sand, foam |
Last Update：2024-04-10 22:29:15
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