For both of the Poly-HEMA products mentioned - this Product 529265 (viscosity-average molecular weight Mv = ~20,000) and Product 192066 (Mv = ~300,000) - the end groups have, unfortunately, not been characterized.
529265
Poly(2-hydroxyethyl methacrylate)
average Mv 20,000
Synonym(s):
Poly(2-HEMA), Poly-HEMA
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| Size/SKU | Availability | Price |
|---|---|---|
5 g | Available to ship TODAYfromMILWAUKEE | $274.00 $205.50 |
25 g | Available to ship TODAYfromMILWAUKEE | $823.00 |
About This Item
Linear Formula:
(C6H10O3)n
CAS Number:
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
MDL number:
$205.50
List Price$274.00Save 25%Web-Only Promotion
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form
powder
Quality Segment
mol wt
average Mv 20,000
transition temp
Tg 84.8 °C
density
1.15 g/mL at 25 °C (lit.)
SMILES string
CC(=C)C(=O)OCCO
InChI
1S/C6H10O3/c1-5(2)6(8)9-4-3-7/h7H,1,3-4H2,2H3
InChI key
WOBHKFSMXKNTIM-UHFFFAOYSA-N
Application
- Hydrogen-bonds structure in poly(2-hydroxyethyl methacrylate) studied by temperature-dependent infrared spectroscopy: Investigates the hydrogen-bond structure in poly(2-hydroxyethyl methacrylate) (PHEMA) using temperature-dependent IR spectroscopy. (S Morita, 2014).
- Transparent and tough poly(2-hydroxyethyl methacrylate) hydrogels prepared in water/IL mixtures: Describes the development of tough and transparent PHEMA hydrogels for potential use in various biomedical applications. (Y Liu et al., 2020).
- Reduced cell attachment to poly(2-hydroxyethyl methacrylate)-coated ventricular catheters in vitro: Examines how PHEMA coatings can reduce cell attachment, which is beneficial for biomedical devices like catheters. (BW Hanak et al., 2018).
- Surface modification of poly(2-hydroxyethyl methacrylate) hydrogel for contact lens application: Studies modifications to PHEMA hydrogels to improve their suitability for contact lens applications. (M Kazemi Ashtiani, M Zandi, 2018).
Physical form
Water-swellable polymer. Hydrogel.
1 of 1
This Item | |||
|---|---|---|---|
| description average Mv 20,000 | description BioReagent, powder, suitable for cell culture | description average Mv 1,000,000 | description ≥99%, contains ≤50 ppm monomethyl ether hydroquinone as inhibitor |
| form powder | form powder | form crystals | form - |
| density 1.15 g/mL at 25 °C (lit.) | density 1.15 g/mL at 25 °C (lit.) | density 1.15 g/mL at 25 °C (lit.) | density 1.073 g/mL at 25 °C (lit.) |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| mol wt average Mv 20,000 | mol wt - | mol wt average Mv 1,000,000 | mol wt - |
| transition temp Tg 84.8 °C | transition temp - | transition temp - | transition temp - |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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what are the end groups and are they the same for the Mv = 300,000?
1 answer-
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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?
1 answer-
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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