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
202495
Poly(ethylene glycol) methyl ether
average MN 750, methoxy, hydroxyl
Synonym(s):
Polyethylene glycol, Methoxy poly(ethylene glycol), Polyethylene glycol monomethyl ether, mPEG
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
250 g | Available to ship TODAYfromMILWAUKEE | $116.00 |
500 g | Available to ship TODAYfromMILWAUKEE | $226.00 |
About This Item
Product Name
Poly(ethylene glycol) methyl ether, average Mn 750
vapor density
>1 (vs air)
Quality Segment
vapor pressure
0.05 mmHg ( 20 °C)
form
paste, solid
mol wt
average Mn 750
refractive index
n20/D 1.459
viscosity
10.5 cSt(210 °F)(lit.)
transition temp
Tm 30 °C
density
1.094 g/mL at 25 °C
Ω-end
hydroxyl
α-end
methoxy
SMILES string
O(CCO)C
InChI
1S/C3H8O2/c1-5-3-2-4/h4H,2-3H2,1H3
InChI key
XNWFRZJHXBZDAG-UHFFFAOYSA-N
Application
- As a chain transfer agent to synthesize amphiphilic block copolymers by metal-free ring-opening oligomerization.
- As a precursor to prepare retinoic acid-polyethylene glycol nanoassembly as an efficient drug delivery system.
- To prepare diblock copolymer with polylactic acid, which can be applied in the field of tissue engineering and drug delivery.
1 of 1
This Item | |||
|---|---|---|---|
| form paste, solid | form semisolid | form flakes (or pellets) | form powder or crystals |
| mol wt average Mn 750 | mol wt average Mn 550 | mol wt average Mn ~2,000 | mol wt average Mn 20,000 |
| density 1.094 g/mL at 25 °C | density 1.089 g/mL at 25 °C | density - | density - |
| vapor pressure 0.05 mmHg ( 20 °C) | vapor pressure 0.05 mmHg ( 20 °C) | vapor pressure 0.05 mmHg ( 20 °C) | vapor pressure 0.05 mmHg ( 20 °C) |
| vapor density >1 (vs air) | vapor density >1 (vs air) | vapor density >1 (vs air) | vapor density >1 (vs air) |
| viscosity 10.5 cSt(210 °F)(lit.) | viscosity 7.5 cSt(210 °F)(lit.) | viscosity 54.6 cSt(210 °F)(lit.) | viscosity - |
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Storage Class
10 - Combustible liquids
wgk
WGK 1
flash_point_f
359.6 °F - closed cup
flash_point_c
182 °C - closed cup
ppe
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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What is the molecular weight in g/mol for Poly(ethylene glycol) methyl ether, Mn = 750?
1 answer-
Yes, as listed in the PROPERTIES section, under 'mol wt', the number average molecular weight is 750.
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