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
1.01969
Silica gel with indicator (orange gel),
granulate ~ 1 - 3 mm
Synonym(s):
Orange Silica Gel
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About This Item
Recommended Products
Agency
suitable for EPA OTM-45
Quality Level
form
granular
surface area
700 m2/g
loss
≤2.0% loss on drying, 140°C
particle size
1-3 mm
pore size
2.0-2.5 nm
capacity
250 g/kg water absorbing capacity(20 °C)
mp
>1000 °C
application(s)
histology
storage temp.
2-30°C
General description
Analysis Note
Loss on drying (140 °C): ≤ 2.0 %
Bulk density: about 70
Storage Class Code
13 - Non Combustible Solids
WGK
nwg
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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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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Are these silica gels 101905, 101969, 101972, 107735, and 101907 type A, type B, or type C?
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All of the silicas listed appear to be type A, ~700 m2/g BET surface area and 20-25 angstroms (or 2.0-2.5 nm) pore size.
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