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20302

Supelco

Molecular Sieve, 5Å

60-80 mesh, bottle of 50 g

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About This Item

EC Number:
215-685-3
UNSPSC Code:
23201100
eCl@ss:
32110204
Pricing and availability is not currently available.

Product Name

Molecular Sieve Adsorbent, matrix Molecular Sieve 5A, 60-80 mesh, bottle of 50 g

Agency

suitable for USP/NF nitrogen

Quality Level

100

form

solid

packaging

bottle of 50 g

matrix

Molecular Sieve 5A

particle size

60-80 mesh

pore size

5 Å pore diameter

density

~0.72 g/mL (free fall density)

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General description

Molecular sieves are synthetically produced zeolites (naturally occurring aluminosilicate minerals), and are characterized by pores and internal cavities of extremely uniform dimensions. These crystalline materials have three-dimensional structures based on silicon oxide (SiO4) and aluminum oxide (AlO4) polyhedra. The polyhedra are linked by their corners to produce an open structure with internal cavities in which molecules can be trapped. These materials are engineered so that access to the internal cavities is through specific and uniform sized pores.

For more information about any of our adsorbents, please visit sigma-aldrich.com/adsorbents

Pictograms

Health hazard
GHS08

Signal Word

Warning

Hazard Statements

H373

Precautionary Statements

P260 - P314 - P501

Hazard Classifications

STOT RE 2 Inhalation

Target Organs

Lungs

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number

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Measurement of atmospheric nitrous oxide using a molecular sieve 5A trap and gas chromatography.
Miles LD.
Analytical Chemistry, 43 (8), 1113-1115 (1971)

Questions

1–8 of 8 Questions  

  1. Is this product a packed column?

    1 answer

    1. This is packing material only; it is not a column. Some endusers will purchase this bottle of packing and prepare their own packed columns.

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  2. What does 5A refer to in Molecular Sieve 5A, Product 20302?

    1 answer

    1. 5A is a grade of Mol Sieve and refers to a nominal pore size of 5 Angstroms

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  3. How do you condition Molecular Sieve 5A, Product 20302, when used in a packed column?

    1 answer

    1. Attach the column to your GC injection port, establish a flow rate of at least 25 mL/min carrier gas, purge with carrier gas at room temperature for 30 minutes, increase oven temperature to 225°C at a rate of 4°C/min, and allow the column to condition at 225°C for 8-12 hours. After conditioning, allow the oven to cool to room temperature, turn off the carrier flow and allow the pressure to go to zero. Then reinstall the column into both the injector port and detector port, and establish desired carrier flow rate. The column should then be ready to use.

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  4. How is Supelco's Molecular Sieve 5A, Product No. 20302, commonly used?

    1 answer

    1. Mol Sieve 5A is commonly packed in columns for the analysis of permanent gases via Gas Chromatography.

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  5. How can I purchase a column that is packed with this material?

    1 answer

    1. Most packed column are custom made and require that you obtain a quotation. Please contact our Customer & Sales Services group at phone number (800)-247-6628, fax number (800)-447-3044 or email [email protected] for additional information.

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  6. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  7. What is the maximum temperature for this packing?

    1 answer

    1. The maximum temperature for this packing is 400 °C.

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  8. What does the 60/80 stand for in the product description?

    1 answer

    1. The 60/80 refers to the mesh size range of the actual particles.  When working with mesh size: the larger the mesh number, the smaller the diameter of the particle.  In this case 60 refers to a diameter of 250 microns and 80 refers to a diameter of 177 microns.  Therefore; the particles in this product with 60/80 will range between 177 microns and 250 microns.

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