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Molecular sieve 3 Å, 100 ml, glass

activated, under argon, for DNA synthesis
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Melting point (mp) >600 °C
WGK 1
CAS No. 1318-02-1
EG-Nr. 215-283-8

Thread size 27 mm

€16.70/Pack Qty. 

excl. VAT. | 100 ml per Pack Qty.

Art. No. N893.1

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Molecular sieve 3 Å activated, under argon, for DNA synthesis

Technical Information
Recommended order quantity
Instructions for use, addition Suitable for Expedite™89xx and Polygen® 
Molecular sieve 3 Å
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General information

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


Regenerating:

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


Critical molecular diameter for frequently occurring molecules, in Å (1 angstrom = 10-10 m = 0.1 nm)

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

Melting Point Information:

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

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