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
258024
α-Tocopherol
≥95.5%
Synonym(s):
(±)-α-Tocopherol, DL-all-rac-α-Tocopherol, Vitamin E
About This Item
Recommended Products
biological source
synthetic
Quality Level
Assay
≥95.5%
form
liquid
technique(s)
HPLC: suitable
color
faint brown to brown
yellow to very dark yellow
density
0.950 g/mL at 20 °C (lit.)
application(s)
cell analysis
storage temp.
2-8°C
SMILES string
CC(C)CCCC(C)CCCC(C)CCCC1(C)CCc2c(C)c(O)c(C)c(C)c2O1
InChI
1S/C29H50O2/c1-20(2)12-9-13-21(3)14-10-15-22(4)16-11-18-29(8)19-17-26-25(7)27(30)23(5)24(6)28(26)31-29/h20-22,30H,9-19H2,1-8H3
InChI key
GVJHHUAWPYXKBD-UHFFFAOYSA-N
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Related Categories
General description
Application
Biochem/physiol Actions
related product
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Skin Sens. 1
Storage Class Code
10 - Combustible liquids
WGK
WGK 1
Personal Protective Equipment
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Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.
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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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Could you please provide the concentration of this product (mg/ml)?
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This product is a neat or pure liquid and has not been diluted. This material has a density of 0.950 g/mL and a molecular weight of 430.71 g/mol. The minimum purity is 95.5%, thus the molarity will vary slightly from lot to lot. The molarity can range from 2.11M (95.5%) to 2.20M (100%).
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