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
427144
Poly(vinylidene fluoride)
average Mw ~275,000 by GPC, average Mn ~107,000, pellets
Synonym(s):
PVDF
About This Item
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Product Name
Poly(vinylidene fluoride), average Mw ~275,000 by GPC, average Mn ~107,000, pellets
InChI
1S/C2H2F2/c1-2(3)4/h1H2
SMILES string
FC(F)=C
InChI key
BQCIDUSAKPWEOX-UHFFFAOYSA-N
vapor pressure
15 mmHg ( 32 °C)
form
pellets
melt index
7-20 g/10 min (230°C/12.5kg)
mol wt
average Mn ~107,000
average Mw ~275,000 by GPC
impact strength
2-4 ft-lb/in. (Izod, ASTM D 256, notched)
dielectric constant
8.0-9.5, 100 Hz (ASTM D 150)
hardness
76-80 (Shore D, ASTM D 2240)
refractive index
n20/D 1.42
ASTM D 3835
17,500-21,500 poise(230 °C) (100 sec-1)(lit.)
transition temp
brittleness temperature -62 °C (ASTM D 746)
Tm 166-170 °C (ASTM D 3418)
solubility
some polar solvents such as organic esters and amines: soluble
density
1.78 g/mL at 25 °C
Quality Level
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This Item | 427152 | 427179 | 427187 |
|---|---|---|---|
| refractive index n20/D 1.42 | refractive index n20/D 1.42 | refractive index n20/D 1.42 | refractive index n20/D 1.407 |
| form pellets | form beads or pellets | form pellets | form pellets |
| density 1.78 g/mL at 25 °C | density 1.78 g/mL at 25 °C | density 1.77 g/mL at 25 °C | density 1.78 g/mL at 25 °C |
| vapor pressure 15 mmHg ( 32 °C) | vapor pressure 15 mmHg ( 32 °C) | vapor pressure - | vapor pressure - |
| melt index 7-20 g/10 min (230°C/12.5kg) | melt index 20-35 g/10 min (230°C/3.8kg) | melt index 3.5-7.5 g/10 min (230°C/12.5kg) | melt index 4-10 g/10 min (230°C/12.5kg) |
| mol wt average Mn ~107,000 | mol wt average Mn ~71,000, average Mw ~180,000 by GPC | mol wt average Mn ~110,000, average Mw ~455,000 | mol wt - |
Application
Features and Benefits
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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How can I determine the shelf life / expiration / retest date of this product?
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拝見した論文にて、こちら Mw ~275,000のPVDFをアセトンのみを用いて溶解させている記述がありました。 一般的にはDMF等の極性溶媒が使用されることが多いと理解しておりますが、アセトン単独での溶解は実際に可能なのでしょうか？ ご教示いただけますと幸いです。
1 answer-
It is possible to dissolve PVDF in acetone. For a comprehensive presentation of PVDF solubility, refer to the relevant literature, particularly Section 2 on the solubility of PVDF.
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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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