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/449/386/product-dating-information-mk.pdf
S7500
Silica gel Inorganic Sorbent
Type II, 5-6 mesh, desiccant
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About This Item
Product Name
Gel de sílice, Type II, 3.5 mm bead size, Suitable for desiccation
grado
high-purity grade
Nivel de calidad
tpo
Type II
Formulario
beads
técnicas
LPLC: suitable
superficie
500 m2/g , approx.
Matriz
Silica
grupo activo de la matriz
silica
tamaño microesfera
3.5 mm
tamaño de poro
60 Å mean pore size
bp
2230 °C
mp
>1600 °C
técnica de separación
hydrophilic interaction (HILIC)
cadena SMILES
O=[Si]=O
InChI
1S/O2Si/c1-3-2
Clave InChI
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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Este artículo | 1.07735 | 236772 | 1.01905 |
|---|---|---|---|
| matrix active group silica | matrix active group - | matrix active group silica | matrix active group - |
| pore size 60 Å mean pore size | pore size 2.0-2.5 nm | pore size 0.75 cm3/g pore volume, 60 Å | pore size 2.0-2.5 nm |
| matrix Silica | matrix - | matrix Silica | matrix - |
| separation technique hydrophilic interaction (HILIC) | separation technique - | separation technique hydrophilic interaction (HILIC) | separation technique - |
| technique(s) LPLC: suitable | technique(s) - | technique(s) LPLC: suitable | technique(s) - |
| form beads | form beads | form powder | form granular |
Aplicación
- Chromatographic Applications: Silica gel is widely used as a stationary phase in chromatographic techniques for separating various chemical compounds. Innovations in silica gel modification, such as pentabromobenzyl group-modified silica gel, have enhanced the separation efficiency for metabolites like nicotinamide. This application is critical for pharmaceutical analysis and metabolomics studies, providing high precision and accuracy in quantifying biologically relevant molecules (Ozaki et al., Analytical Biochemistry, 2022).
- Environmental Pollutant Detection: Silica gel is employed in creating molecularly imprinted polymers (MIPs) that selectively recognize and bind environmental pollutants. A notable application involves embedding quantum dots in molecularly imprinted silica gel to detect aminoimidazo-azaarenes (AIAs) in food samples. This method offers high selectivity and sensitivity, making it a powerful tool for food safety and environmental monitoring (Qiao et al., Current Analytical Chemistry, 2021).
- Heavy Metal Removal from Water: Silica gel doped with specific reagents is used for the adsorption and removal of heavy metals from water samples. Recent research highlights the use of sol-gel silica doped with 3-(2-naphthoyl)-1,1-dibutylselenourea for the efficient removal of Pb(II) and Zn(II) from aqueous solutions. This application is essential for environmental remediation and ensuring water safety, showcasing the versatility and effectiveness of silica gel in addressing environmental pollutants (Mehmood et al., International Journal of Environmental Analytical Chemistry, 2022).
Código de clase de almacenamiento
11 - Combustible Solids
Clase de riesgo para el agua (WGK)
nwg
Punto de inflamabilidad (°F)
Not applicable
Punto de inflamabilidad (°C)
Not applicable
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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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