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VII. DRYING AGENTS
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Many products such as aluminas, silicas and molecular sieves can be employed as reasonably effective drying agents which can usually be conveniently regenerated. Current chemical literature reflects an active interest in the drying process, and even the method by which a chemical reagent is produced as a dry solid has been investigated; for example, the effectiveness of anhydrous KF as a fluorinating agent has been related to its preparation by freezedrying14 and spraydrying15 techniques.
Comparative studies of desiccant efficiencies in reagent and solvent drying have been made.16-19
In addition to aluminum oxide, silica gel, molecular sieves, activated carbon and montmorillonite, Aldrich offers a comprehensive line of chemical products, including various grades of Drierite®, which can be used as drying agents.
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® Registered trademark of W.A. Hammond Drierite Co.
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| Table 11* - Other products for drying |
| Catalog No. |
Description |
| 22,360-3 |
Barium oxide |
| 22,174-0 |
Boron oxide |
| 23,922-4 |
Calcium chloride, 48 mesh |
| 22,231-3 |
Calcium chloride, 20 mesh |
| 20,802-7 |
Calcium hydride, 4 + 40 mesh |
| 21,326-8 |
Calcium hydride, 40 mesh |
| 21,332-2 |
Calcium hydride, 1 +4 mesh |
| 20,917-1 |
Copper(II) sulfate |
| 19,987-7 |
Lithium aluminum hydride |
| 22,036-1 |
Magnesium oxide |
| 22,228-3 |
Magnesium perchlorate |
| 20,809-4 |
Magnesium sulfate |
| 21,470-1 |
Phosphorus pentoxide, powder |
| 22,147-3 |
Potassium hydroxide, pellets |
| 21,710-7 |
Sodium, spheres |
| 22,146-5 |
Sodium hydroxide, pellets |
| 24,487-2 |
Sodium-potassium alloy, 22% sodium |
| 24,488-0 |
Sodium-potassium alloy, 44% sodium |
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*Please consult the Aldrich Catalog/Handbook for items not listed here.
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