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
363081
Poly(vinyl alcohol)
average Mw 85,000-124,000, 87-89% hydrolyzed
Vybrat velikost
| Vám/SKU | Dostupnost | Cena |
|---|---|---|
25 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 1 330,00 Kč |
500 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 3 900,00 Kč |
1 kg | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 6 360,00 Kč |
O této položce
1 330,00 Kč
Quality Segment
form
powder or crystals
mol wt
average Mw 85,000-124,000
feature
hydrophilic
falling ball
23-27 cP, 4 % in H2O(20 °C)(lit.)
InChI
1S/C2H4O/c1-2-3/h2-3H,1H2
InChI key
IMROMDMJAWUWLK-UHFFFAOYSA-N
General description
Application
PVA can be used as a surface stabilizer in preparing drug delivery carriers for the slow release of tetracycline.
Highly concentrated alginate/polyvinyl alcohol (PVA) bioinks can be used to prepare 3D bioprinting porous scaffolds. Partial diffusion of PVA sols from printed scaffolds creates a large number of micropores.
PVA can also be used as a water-soluble polymer template to synthesize nanosized polypyrrole via in situ polymerization. PVA generates stable dispersions of polypyrrole nanospheres in water and the size of nanospheres depends on the molecular weight and concentration of PVA.
1 of 1
Tato položka | |||
|---|---|---|---|
| description average Mw 85,000-124,000, 87-89% hydrolyzed | description average Mw 13,000-23,000, 98% hydrolyzed | description Mw 8,000-10,000, 80% hydrolyzed | description Mw 150,000 (average), 99+% hydrolyzed |
| form powder or crystals | form powder or crystals | form crystals | form crystalline powder, crystals |
| mol wt average Mw 85,000-124,000 | mol wt average Mw 13,000-23,000 | mol wt Mw 8,000-10,000 | mol wt Mw 150,000 (average) |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| feature hydrophilic | feature hydrophilic | feature hydrophilic | feature hydrophilic |
| falling ball 23-27 cP, 4 % in H2O(20 °C)(lit.) | falling ball 3.5-4.5 cP, 4 % in H2O(20 °C)(lit.) | falling ball 2.5-3.5 cP, 4 % in H2O(20 °C)(lit.) | falling ball 55-65 cP, 4 % in H2O(20 °C)(lit.) |
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Skladovací třída
11 - Combustible Solids
Co se děje?
WGK 1
Bod vzplanutí (°F)
No data available
Bod vzplanutí (°C)
No data available
PPE (osobní ochranné prostředky)
Eyeshields, Gloves, type N95 (US)
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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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