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
1.04440
Kaolin
powder
Synonym(s):
Kaolin
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About This Item
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Quality Level
impurities
≤0.001% Pb (Lead)
≤2.0% Substances soluble in hydrochloric acid
loss
≤15.0% loss on ignition, 600°C
pH
6-7 (20 °C, 50 g/L in H2O, slurry)
density
2.6 g/cm3 at 20 °C
bulk density
470 kg/m3
storage temp.
no temp limit
SMILES string
[Si](=O)(O[Si](=O)O[Al]=O)O[Al]=O.O.O
InChI
1S/2Al.O5Si2.2H2O.2O/c;;1-6(2)5-7(3)4;;;;/h;;;2*1H2;;/q2*+1;-2;;;;
InChI key
NLYAJNPCOHFWQQ-UHFFFAOYSA-N
1 of 4
This Item | 18616 | 795453 | K7375 |
|---|---|---|---|
| impurities ≤0.001% Pb (Lead) | impurities acid. or alk. react. impurities, in accordance, organic impurities, in accordance, ≤0.01% heavy metals (as Pb), ≤1% soluble in acid (as SO4) | impurities - | impurities - |
| loss ≤15.0% loss on ignition, 600°C | loss - | loss ≤2.0% loss on drying | loss ≤2.0% loss on drying |
| pH 6-7 (20 °C, 50 g/L in H2O, slurry) | pH - | pH - | pH 3.5-5.0 (20% in water) |
| density 2.6 g/cm3 at 20 °C | density - | density - | density - |
| bulk density 470 kg/m3 | bulk density - | bulk density - | bulk density - |
| storage temp. no temp limit | storage temp. - | storage temp. - | storage temp. - |
Analysis Note
Substances soluble in hydrochloric acid: ≤ 2.0 %
Appearance of substance (colour): passes test
Appearance of substance (description): passes test
Carbonate: passes test
Iron: passes test
Pb (Lead): ≤ 0.001 %
Loss on ignition (600 °C): ≤ 15.0 %
Other Notes
Storage Class Code
11 - 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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What is the Silica to Alumina ratio
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The silica to alumina ratio is not determined for this product.
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