For this product, the molecular weight is approximately 258.16 g/mol (theoretical). This material is inert and has not been activated. There are no dispersants used in the drying process.
K7375
Kaolin
Synonyma:
Aluminum silicate hydroxide, Bolus, Hydrated aluminum silicate
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| Vám/Skladová položka | Dostupnost | Cena |
|---|---|---|
500 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 1 720,00 Kč |
1 kg | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 2 960,00 Kč |
O této položce
Lineární vzorec:
~Al2Si2O5(OH)4
Číslo CAS:
UNSPSC Code:
11111803
NACRES:
NA.21
EC Number:
310-194-1
MDL number:
Form:
powder
1 720,00 Kč
Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti.
Technický servis
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powder
Quality Segment
loss
≤2.0% loss on drying
pH range
3.5-5.0(20% in water)
pH
3.5-5.0 (20% in water)
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
General description
Kaolin is hydrated aluminum silicate. Its water sorption isotherms, desorption isotherms, desorption enthalpy and entropy have been determined. The impact of its addition to styrene-butadiene rubber composites has been investigated. The thermal degradation of kaolin has been analyzed.
Application
Kaolin has been used:
- For preparing synthetic turbid water that is employed to evaluate the biosorption capacity of Moringa oleifera leaves.
- In combination with carrageenan to induce arthritic inflammation in a rat model for evaluating the activity of JAK3 (janus kinase 3) inhibitors.
- In a study to assess its utility for microparticle-enhanced cultivation (MPEC) of 2-phenylethanol and 6-pentyl-α-pyrone.
Other Notes
Legal Information
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
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Tato položka | |||
|---|---|---|---|
| description - | description heavy, powder | description meets USP testing specifications | description anhydrous, free-flowing, Redi-Dri™ |
| form powder | form powder | form solid | form powder |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| pH 3.5-5.0 (20% in water) | pH - | pH - | pH - |
| loss ≤2.0% loss on drying | loss - | loss - | loss ≤2.0% loss on drying |
| pH range 3.5-5.0(20% in water) | pH range - | pH range - | pH range 3.5-5.0(20% in water) |
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Skladovací třída
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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Can i get its molecular weight and also would like to know is it pre treated and what are its conditions.
1 answer-
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The kaolin contains a small amount of Ti and Fe determined by SEM/EDS analysis. Could you confirm the amount of each impurity?
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The impurities present in this material are not identified on a lot-to-lot basis. However, historical data indicates the presence of several compounds, as well at the approximate amount of each, as follows:
TiO2: 1.6%
Fe2O3: 0.5%
Na2O: 0.2%
K2O: 0.1%Helpful?
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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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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I need to know the particle size of this reagent. Thanks
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The particle size range is 0.1 - 4 microns.
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