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
70253
Sepiolite
powder
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
1 kg | Check Cart for Availability | $101.00 |
About This Item
$101.00
form
powder
Quality Segment
concentration
~13% Mg
loss
≤10% loss on drying
SMILES string
O.[Mg++].[Mg++].O[Si]([O-])=O.O[Si]([O-])=O.[O-][Si]([O-])=O
InChI
1S/2Mg.2HO3Si.O3Si.H2O/c;;3*1-4(2)3;/h;;2*1H;;1H2/q2*+2;2*-1;-2;
InChI key
TUKQLEWOUPCTOS-UHFFFAOYSA-N
General description
Application
1 of 1
This Item | |||
|---|---|---|---|
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| form powder | form solid | form powder | form - |
| concentration ~13% Mg | concentration - | concentration - | concentration - |
| loss ≤10% loss on drying | loss - | loss - | loss - |
Storage Class
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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I am looking for sepiolite and perlite powders as part of a WDG formulation for agricultural use. What are the particle sizes of the sepiolite you stock, and do you stock perlite (if so what particle size?)
1 answer-
This is currently the only Sepiolite product offered. The particle size of this item is not a determined test specification. However, historical data suggests that the particle size distribution is < 5µm.
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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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What is the molecular weight of the Sepiolite which you are providing?
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The calculated molecular weight of this product, in anhydrous form, is 278.87 g/mol. However, this is a hydrated material that includes a variable amount of H2O. The water content may range from 5 - 10% and is reported in the lot specific Certificate of Analysis. Please see the link below to review a sample or lot specific Certificate:
https://www.sigmaaldrich.com/product/aldrich/70253#product-documentationHelpful?
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What is the density of this material?
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The density of this product is reported on the Product Safety Data Sheet as 2.000 - 2.300 g/cm3 at 20 °C (68 °F).
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Can you give information about the specific surface area and fiber diameters and lengths of this product with CAS number 63800-37-3 ?
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The particle size and surface area of Product 70253 are not determined. However, the d50 is generally in the range of 7 to 11 µm.
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Is this item, Sepiolite 70253, the fibrous form?
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This product is in powder form.
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