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
372781
聚环氧乙烷
average MV 1,000,000 (nominal), powder, hydroxyl, BHT as inhibitor
同義詞:
PEO
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產品名稱
聚环氧乙烷, average Mv ~1,000,000 (nominal), powder
SMILES string
[H]OCCO
InChI
1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
InChI key
LYCAIKOWRPUZTN-UHFFFAOYSA-N
form
powder
mol wt
average Mv ~1,000,000 (nominal)
contains
200-500 ppm BHT as inhibitor
greener alternative product characteristics
Safer Solvents and Auxiliaries
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
viscosity
400-800 cP, 2 % in H2O(25 °C, Brookfield)(lit.)
functional group
hydroxyl
greener alternative category
Quality Level
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1 of 4
本產品 | 181994 | 189456 | 372803 |
|---|---|---|---|
| functional group hydroxyl | functional group - | functional group hydroxyl | functional group hydroxyl |
| form powder | form powder | form powder | form powder |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| mol wt average Mv ~1,000,000 (nominal) | mol wt average Mv 200,000 (nominal) | mol wt average Mv ~900,000 (nominal) | mol wt average Mv ~2,000,000 (nominal) |
| contains 200-500 ppm BHT as inhibitor | contains 200-500 ppm BHT as inhibitor | contains 200-500 ppm BHT as inhibitor | contains 200-500 ppm BHT as inhibitor |
| viscosity 400-800 cP, 2 % in H2O(25 °C, Brookfield)(lit.) | viscosity 65-115 cP, 5 % in H2O(25 °C, Brookfield)(lit.) | viscosity 8,800-17,600 cP, 5 % in H2O(25 °C, Brookfield)(lit.) | viscosity 2,000-4,000 cP, 2 % in H2O(25 °C, Brookfield)(lit.) |
Application
General description
存儲類別/等級
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
文章
Electrospinning technique applications discussed, emphasizing control of nanofibers and assembly into 3D architectures.
Discover hydrogels, biocompatible materials for drug delivery, tissue engineering, wound care, and 3D bioprinting in innovative biomedical applications
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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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