dipotassium wolframate
Potassium tungstate
CAS: 7790-60-5
Molecular Formula: K2O4W
dipotassium wolframate - Names and Identifiers
| Name | Potassium tungstate |
| Synonyms | Potassium tungstate POTASSIUM TUNGSTATE POTASSIUM WOLFRAMATE dipotassium wolframate POTASSIUM TUNGSTEN OXIDE Potassium tungstate Dihydrate Potassiumtungstatewhitepowder Dipotassium dioxido(dioxo)tungsten dipotassium dioxido(dioxo)tungsten POTASSIUM TUNGSTATEPOTASSIUM TUNGSTATEPOTASSIUM TUNGSTATEPOTASSIUM TUNGSTATE |
| CAS | 7790-60-5 |
| EINECS | 232-215-2 |
| InChI | InChI=1/2K.4O.W/q2*+1;;;2*-1;/r2K.O4W/c;;1-5(2,3)4/q2*+1;-2 |
dipotassium wolframate - Physico-chemical Properties
| Molecular Formula | K2O4W |
| Molar Mass | 326.0342 |
| Density | 3.12 g/mL at 25 °C (lit.) |
| Melting Point | 921 °C (lit.) |
| Water Solubility | Soluble in water. |
| Appearance | Colorless crystal or white powder |
| Specific Gravity | 3.12 |
| Color | white |
| Exposure Limit | ACGIH: TWA 3 mg/m3NIOSH: TWA 5 mg/m3; STEL 10 mg/m3 |
| Merck | 14,7694 |
| Storage Condition | Room Temprature |
| Sensitive | Hygroscopic |
| MDL | MFCD00049668 |
| Use | It is used as an analytical reagent, a precipitant for alkaloids, and is also used for refining tungsten and manufacturing bronze. |
dipotassium wolframate - Risk and Safety
| UN IDs | 3288 |
| WGK Germany | 1 |
| TSCA | Yes |
| Hazard Class | 6.1(b) |
| Packing Group | III |
dipotassium wolframate - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| solubility in water (g/100ml) | grams dissolved per 100ml of water: 51.5g/20 ℃ |
| purpose | used as analytical reagent, precipitation agent for alkaloids, also used in the refinement of tungsten and the manufacture of bronze |
| production method | potassium dichromate K2Cr2O7 is mixed with tungsten powder and can burn when heated, the temperature can be raised to about 1700 ℃ in the range of 0 × 1~0 × 2s, and Potassium tungstate and chromium oxide are obtained. In addition, when W interacts with KOH, K2WO4:2W 3O2 4KOH2K2WO4 2H2O W 4KOHK2WO4 2K 2H2 does not react with KOH solution in the absence of oxygen, but acts slightly with oxygen, forming K2WO4. W and KOH melt: no oxygen when the role of slow (such as at 660 deg C when nitrogen oxygen), the formation of K2WO4, H2 and K. In the presence of an oxidizing agent (e. G., KNO3, SnO2, KClO3, PbO2, etc.), the reaction can be intense. |
Last Update：2024-04-10 22:29:15
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Multiple Specifications
Product Name: Potassium tungstate Visit Supplier Webpage Request for quotationCAS: 7790-60-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
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