If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
214477
Silica gel Inorganic Sorbent
high-purity grade (Davisil Grade 923), 100-200 mesh
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A propos de cet article
Nom du produit
Gel de silice, high-purity grade (Davisil Grade 923), pore size 30 Å, 100-200 mesh
grade
high-purity grade (Davisil Grade 923)
Quality Segment
form
fine crystals
manufacturer/tradename
Davisil®
technique(s)
LPLC: suitable
surface area
430-530 m2/g
matrix
Silica
matrix active group
silica
particle size
100-200 mesh, 75-150 μm
pore size
0.40 cm3/g pore volume, 30 Å
bp
2230 °C
mp
>1600 °C
separation technique
hydrophilic interaction (HILIC)
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
General description
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction
Application
Other Notes
Grade 923 meets ASTM D1319 specifications for hydrocarbon analysis
Legal Information
1 of 1
Cet article | |||
|---|---|---|---|
| pore size 0.40 cm3/g pore volume, 30 Å | pore size 1.15 cm3/g pore volume, 150 Å | pore size 0.75 cm3/g pore volume, 60 Å | pore size 0.43 cm3/g pore volume, 22 Å |
| particle size 100-200 mesh, 75-150 μm | particle size 200-425 mesh, 35-70 μm | particle size 150-250 μm, 60-100 mesh | particle size 28-200 mesh, 75-650 μm |
| separation technique hydrophilic interaction (HILIC) | separation technique hydrophilic interaction (HILIC) | separation technique hydrophilic interaction (HILIC) | separation technique hydrophilic interaction (HILIC) |
| matrix active group silica | matrix active group silica | matrix active group silica | matrix active group silica |
| matrix Silica | matrix Silica | matrix Silica | matrix Silica |
| technique(s) LPLC: suitable | technique(s) LPLC: suitable | technique(s) LPLC: suitable | technique(s) LPLC: suitable |
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flash_point_f
Not applicable
flash_point_c
Not applicable
Classe de stockage
13 - Non Combustible Solids
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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