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MilliporeSigma

363170

Sigma-Aldrich

Poly(vinyl alcohol)

Mw 13,000-23,000, 87-89% hydrolyzed

Poly(vinyl alcohol)

Synonym(s):

PVA

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25 G
$57.30
500 G
$124.00
1 KG
$199.00

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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

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$57.30


In StockDetails


Ships Every 4 weeks
Technical Service
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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

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Show Differences

1 of 4

This Item
363138363081363103
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.

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)


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Questions

1–4 of 4 Questions  
  1. What is the PDI for this product?

    1 answer
    1. 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.

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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.pdf

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  3. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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  4. 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
    1. 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.

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