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
Przejdź do
345296
Poly(tetrahydrofuran)
average Mn ~1,000
Synonim(y):
α-Hydro-ω-hydroxypoly(oxy-1,4-butanediyl), Poly(1,4-butanediol), polyTHF
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Informacje o tej pozycji
Quality Segment
vapor pressure
<0.01 mmHg ( 25 °C), <1 mmHg ( 20 °C)
mol wt
average Mn ~1,000
contains
0.05-0.07% BHT as stabilizer
feature
hydrophobic
mp
25-33 °C
density
0.974 g/mL at 25 °C
SMILES string
OCCCCO
InChI
1S/C8H18O2/c1-3-5-6-10-8(4-2)7-9/h8-9H,3-7H2,1-2H3/t8-/m0/s1
InChI key
BJZYYSAMLOBSDY-QMMMGPOBSA-N
Application
- Thermally reversible urethane -epoxy networks.
- Poly(hexamethylene 2,6-naphthalate)-block-poly(tetrahydrofuran) (PHN-b-N-pTHF) copolymers with shape memory effect via melt polycondensation.
- Poly(3,4-ethylenedioxythiophene):poly(tetrahydrofuran) composite for the fabrication of memory organic electrochemical transistors.
Features and Benefits
- High flexibility
- Hydrolytic stability
- Excellent abrasion resistance
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Klasa składowania
11 - Combustible Solids
flash_point_f
>325.4 °F - Tag open cup
flash_point_c
> 163 °C - Tag open cup
ppe
dust mask type N95 (US), Eyeshields, Gloves
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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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