This product has a weight average molecular weight (Mw) of 13,000-23,000, but no polydispersity index (PDI) is provided by the supplier, nor is a number average molecular weight (Mn) available for PDI calculation. The PDI would need to be determined empirically.
363170
Poly(vinyl alcohol)
Mw 13,000-23,000, 87-89% hydrolyzed
Poly(vinyl alcohol)
Synonym(s):
PVA
Sign Into View Organizational & Contract Pricing
Select a Size
25 G
$57.30
500 G
$124.00
1 KG
$199.00
$57.30
In StockDetails
New
Ships Every 4 weeks
Select a Size
Change View
25 G
$57.30
500 G
$124.00
1 KG
$199.00
About This Item
Linear Formula:
[-CH2CHOH-]n
CAS Number:
MDL number:
UNSPSC Code:
12352104
NACRES:
NA.23
Skip To
$57.30
In StockDetails
New
Ships Every 4 weeks
form
crystalline powder
crystals or granules
powder
mol wt
Mw 13,000-23,000
falling ball
3.5-4.5 cP, 4 % in H2O(20 °C)(lit.)
InChI
1S/C2H4O/c1-2-3/h2-3H,1H2
InChI key
IMROMDMJAWUWLK-UHFFFAOYSA-N
Looking for similar products? Visit Product Comparison Guide
1 of 4
This Item | 363138 | 363081 | 363103 |
|---|---|---|---|
| form crystalline powder, crystals or granules | form powder | form powder or crystals | form powder or crystals |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| mol wt Mw 13,000-23,000 | mol wt Mw 31,000-50,000 | mol wt average Mw 85,000-124,000 | mol wt average Mw 146,000-186,000 |
| falling ball 3.5-4.5 cP, 4 % in H2O(20 °C)(lit.) | falling ball 5.4-6.5 cP, 4 % in H2O(20 °C)(lit.) | falling ball 23-27 cP, 4 % in H2O(20 °C)(lit.) | falling ball 40-50 cP, 4 % in H2O(20 °C)(lit.) |
General description
Polyvinyl alcohol(PVA) is a linear hydrophilicsynthetic polymer with a monoclinic crystal structure. It can be synthesized via the polymerization of vinyl esters orethers, with subsequent saponification or transesterification. Due to itsexcellent physical and chemical properties, PVA has been widely used inadhesives, fibers, paper industry, drug delivery, and tissue engineering.
Application
PVA is used as a biological reagent to test the dispersion of zinc oxide nanoparticles.[1] PVA has been evaluated as an effective protein resistant material.2 It may be used to stabilize gold colloids of diameter 3-8nm.[2]
Poly(vinyl alcohol) can be used as a secondary template in the synthesis of mesoporous zeolites.
It can be used to prepare a hydrogel template to produce homogeneous microparticles for sustained drug release. PVA is used as a stabilizer in micro-particle preparation due to its high tensile strength and flexibility.
It can be used to prepare a hydrogel template to produce homogeneous microparticles for sustained drug release. PVA is used as a stabilizer in micro-particle preparation due to its high tensile strength and flexibility.
Features and Benefits
- Good mechanical and chemical stability
- Non-toxic
- Tunable hydrophilicity
- Resistance to solvents Capable of forming films
Storage Class
11 - Combustible Solids
wgk_germany
WGK 1
flash_point_f
No data available
flash_point_c
No data available
ppe
Eyeshields, Gloves, type N95 (US)
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
What is the PDI for this product?
1 answer-
Helpful?
-
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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/449/386/product-dating-information-mk.pdfHelpful?
-
-
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
Helpful?
-
-
Do you have any data indicating an expected range of particle size for PVA, Poly(vinyl alcohol), products 363170 and 363138 (CAS 9002-89-5)?
1 answer-
The particle size is an internal specification, and there are no external specifications beyond the internal “S” grade. Internally, the focus is on ensuring there are no excessive quantities of fines (<100 Mesh) or excessive large particles (>14 Mesh). These internal requirements do not vary between the two products listed.
Helpful?
-
Active Filters
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service