This product is a polyethylene sorbitol ester, with a calculated molecular weight of 1837, assuming 20 ethylene oxides, 1 sorbitan, and trioleic acid as the primary fatty acid.
P4634
TWEEN® 85
Synonym(e):
Polyoxyethylen-Sorbitan-Trioleat
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Unterstützung erhaltendescription
non-ionic
assay
≥50%
form
viscous liquid
composition
Oleic acid, ≥50% (balance primarily C10-C18 fatty acids)
concentration
≥50% (GC)
density
1,03 g/cm3 at 20 °C
Quality Level
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Dieser Artikel | 8.22188 | STS0205 | STS0204 |
|---|---|---|---|
| description non-ionic | description - | description non-ionic | description non-ionic |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| composition Oleic acid, ≥50% (balance primarily C10-C18 fatty acids) | composition - | composition Oleic acid, ≥50.0% (balance primarily C10-C18 fatty acids) | composition Oleic acid, ≥58.0% (balance primarily linoleic, palmitic, and stearic acids) |
| concentration ≥50% (GC) | concentration - | concentration ≥50% (GC) | concentration - |
General description
Tween 85 is a polyoxyethylene sorbitan trioleate non-ionic surfactant. [1]
Application
Legal Information
TWEEN is a registered trademark of Croda International PLC
Lagerklasse
10 - Combustible liquids
wgk
WGK 1
flash_point_f
>300.2 °F - DIN 51758
flash_point_c
> 149 °C - DIN 51758
ppe
Eyeshields, Gloves
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Marianecci, C., et al.
J. Controlled Release, 164, 17-17 (2012)
Enzymatic activity of Chromobacterium viscosum lipase in an AOT/Tween 85 mixed reverse micellar system
Hossain, J., et al.
Journal of Chemical Technology and Biotechnology, 74, 423-423 (1999)
Rafaela C Sartore et al.
PloS one, 6(6), e20667-e20667 (2011-06-16)
The existence of loss and gain of chromosomes, known as aneuploidy, has been previously described within the central nervous system. During development, at least one-third of neural progenitor cells (NPCs) are aneuploid. Notably, aneuploid NPCs may survive and functionally integrate
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Could you please provide the average molecular weight of tween 85 (P4634)?
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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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