Technical Data Sheet
Molecular sieve 4 Å, 500 g
WGK 1
CAS No. 1318-02-1
EG-Nr. 215-283-8
€64.40/Pack Qty.
excl. VAT. | 500 g per Pack Qty.
Art. No. 258K.1
Product details
Molecular sieve 4 Å
| Storage under inert gas | recommended |
- Subtotal: 0.00
| Art. No. | Pack Qty. | Pack. | Price | Quantity | |
|---|---|---|---|---|---|
| 258K.1 | 500 g | plastic |
€64.40 |
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| 258K.2 | 1 kg | plastic |
€102.05 |
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| 258K.3 | 2.5 kg | plastic |
€203.20 |
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In stock
Available
In procurement
No longer available
Delivery date currently unknown
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- Subtotal: 0.00
Downloads / MSDS
General information
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
| Molecule | Size [Å] | Molecule | Size [Å] | |
| Acetylene | 3.3 | Helium | 2.0 | |
| Ammonia | 2.9 | Hydrogen | 2.4 | |
| Argon | 3.8 | Hydrogen sulphide | 3.6 | |
| Benzole/toluene | 5.8 | Methane | 3.8 | |
| n-Butanes and higher n-hydrocarbons | 4.3 | Methanol | 3.6 | |
| i-Butane and higher i-hydrocarbons | 5.1 | Methyl mercaptan | 3.8 | |
| i-Butene | 4.0 | Nitrogen | 3.6 | |
| trans-2-Butene | 5.1 | Oxygen | 3.5 | |
| 1,3-Butadiene | 5.8 | Propane | 4.3 | |
| Cyclohexane | 6.0 | Propylene | 4.0 | |
| Carbon dioxide | 3.3 | Tetrahydrofurane | 5.0 | |
| Carbon monoxide | 3.7 | Thiophene | 5.3 | |
| Carbon tetrachloride | 5.9 | Triethylamine | 7.8 | |
| Dimethylpropane | 6.2 | Trichlormethane/Chloroform | 6.9 | |
| Ethane | 4.2 | Water | 2.6 | |
| Ethanol | 4.2 | o-Xylene | 6.6 | |
| Ethylene | 3.9 | m-Xylene | 6.3 | |
| Ethyl mercaptan | 3.8 | p-Xylene | 5.9 |
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 1,000°C. This discrepancy is caused by the specific definition of the test method and does not reflect the actual thermal stability of the products.
Certificates of Analysis
Type analysis
| Globe diameter | 2.5-5.0 mm |
| Bulk density | 680-800 g/l |
| Adsorptive capacity | |
| 50 % rel. humidity | approx. 20 % |
| Crush strength | ≥25 N |
| Loss on ignition | ≤1.5 % |