Desiccant bags - molecular sieve 4 Å, 40 unit(s), 30 g bags (70 x 140 mm)

Desiccants can absorb water and bind it chemically (reversibly or irreversibly) or physically. The main desiccants can be subdivided into four categories:

• non-renewable chemical desiccants
• renewable chemical desiccants
• silica gels
• molecular sieves

For drying, cleaning or separating liquids and gases.

Properties:

• Spherical or powdered metal aluminosilicates
• Spheres Ø 1,6-2,5 mm and 2,5-5,0 mm
• Active surface: 600-700 m²/g
• Activated at 500-600 °C; we nevertheless recommend activating the molecular sieve again before using it for the first time

• In desiccators, drying tubes, columns
• For drying streaming gases
• For absoluting organic solvents
• For separating organic solvents

• In drying cabinets at 200-300 °C
• Through pressure change or rinsing

The melting points of our molecular sieves can vary depending on the test method used. The safety data sheets indicate melting points of >600 °C, which is due to the test method employed (OECD Test No. 102). This method states that no precise endpoint is required as long as the substance does not melt at temperatures up to 600 °C.

However, the actual melting point of our molecular sieves is significantly higher and can be estimated to exceed 1000 °C. This discrepancy is caused by the specific definition of the test method and does not reflect the actual thermal stability of the products.