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
1.01972
Silica gel with moisture indicator (brown gel)
desiccant ~ 1 - 4 mm
Synonym(s):
Brown Silica Gel
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$132.00
$483.00
$1,650.00
About This Item
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agency
suitable for EPA OTM-45
form
granular
surface area
700 m2/g
loss
≤2.0% loss on drying, 150°C
Quality Level
matrix
Silica base material
particle size
1-4 mm
pore size
2.0-2.5 nm
pH
2-10 (50 g/L in H2O, slurry)
mp
>1000 °C
application(s)
PFAS testing
storage temp.
2-30°C
Related Categories
1 of 4
This Item | |||
|---|---|---|---|
| pore size 2.0-2.5 nm | pore size 2.0-2.5 nm | pore size 0.8 cm3/g pore volume | pore size 0.8 cm3/g pore volume, 60 Å |
| surface area 700 m2/g | surface area 700 m2/g | surface area 500 m2/g | surface area 500 m2/g |
| particle size 1-4 mm | particle size 1-3 mm | particle size 200-500 μm, 35-60 mesh | particle size 220-440 mesh, 35-75 μm |
| form granular | form granular | form powder or crystals | form powder or crystals |
| pH 2-10 (50 g/L in H2O, slurry) | pH - | pH - | pH - |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
General description
Analysis Note
Loss on drying (150 °C): ≤ 2.0 %
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 20.0 %
Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Related Content
Las PFAS o «productos químicos eternos», persisten en el medio ambiente y pueden suponer un riesgo para la salud humana. Descubra nuestras herramientas de control medioambiental para cuantificación de las PFAS, para apoyar a los investigadores, reguladores y laboratorios en sus análisis de las PFAS.
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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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