There is no information on the polydispersity index of this polymer.
180955
Cellulose acetate
average Mn ~30,000 by GPC
Synonym(s):
Acetylcellulose, Cellulose & cellulose derivatives
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| Size/SKU | Availability | Price |
|---|---|---|
25 g | Check Cart for Availability | $91.10 |
500 g | Estimated to ship onSeptember 24, 2026fromMilliporeSigma Canada Ltd. | $169.00 |
About This Item
form
powder
Quality Segment
mol wt
average Mn ~30,000 by GPC
extent of labeling
39.8 wt. % acetyl
impurities
≤3.0% water
refractive index
n
density
1.3 g/mL at 25 °C (lit.)
SMILES string
O1[C@H](C(C(C(C1COC(=O)C)OC(=O)C)OC(=O)C)OC(=O)C)O[C@@H]2C(OC(C(C2OC(=O)C)OC(=O)C)OC(=O)C)COC(=O)C
InChI
1S/C28H38O19/c1-11(29)37-9-19-21(39-13(3)31)23(40-14(4)32)26(43-17(7)35)28(46-19)47-22-20(10-38-12(2)30)45-27(44-18(8)36)25(42-16(6)34)24(22)41-15(5)33/h19-28H,9-10H2,1-8H3/t19?,20?,21?,22-,23?,24?,25?,26?,27?,28+/m1/s1
InChI key
WOTQVEKSRLZRSX-OLIDUAMRSA-N
General description
Cellulose is a naturally occurring biodegradable and biocompatible polymer. Cellulose based polymers find wide variety of applications as base matrix in biopharmaceutical industry. Cellulose acetate is soluble in acetone. Cellulose acetate can be easily electrospun into its nanofibers.
Application
Cellulose acetate was used in the fabrication of gold microelectrode for electrochemical monochloramine measurement. Cellulose acetate based membranes are used in the separations in aqueous systems and in reverse osmosis process. It has been reported to be used to desalinate seawater.Cellulose acetate was used for biosensor encapsulation. It was used in the preparation of cellulose acetate nanofibre felt structure, cellulose acetate fibers.
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This Item | |||
|---|---|---|---|
| description average Mn ~30,000 by GPC | description average Mn ~50,000 by GPC | description European Pharmacopoeia (EP) Reference Standard | description United States Pharmacopeia (USP) Reference Standard |
| refractive index n | refractive index n | refractive index n | refractive index n |
| form powder | form powder | form - | form - |
| density 1.3 g/mL at 25 °C (lit.) | density 1.3 g/mL at 25 °C (lit.) | density 1.3 g/mL at 25 °C (lit.) | density 1.3 g/mL at 25 °C (lit.) |
| extent of labeling 39.8 wt. % acetyl | extent of labeling 39.7 wt. % acetyl | extent of labeling - | extent of labeling - |
| mol wt average Mn ~30,000 by GPC | mol wt average Mn ~50,000 by GPC | mol wt - | mol wt - |
| Quality Level 200 | Quality Level 200 | Quality Level - | Quality Level - |
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Storage Class
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Is there any data on polydispersity index, polymerization, etc?
1 answer-
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What is the viscosity (in poise) of cellulose acetate with an average molecular weight of ~30,000?"
1 answer-
This product is not formally assayed to determine viscosity. No specific information is available regarding this property.
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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What is the degree of substitution of this product? In other words, what is the percentage (by number) of hydroxyl groups substituted by acetyl groups?
1 answer-
The specification sheet for this product shows that the percent acetyl by weight is between 39.3 percent and 40.3 percent. That narrow range corresponds to exactly three acetyl groups and three free hydroxyls for the six available hydroxyl groups per disaccharide unit of the cellulose acetate.
https://www.sigmaaldrich.com/specification-sheets/308/124/180955-BULK_______ALDRICH__.pdfHelpful?
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Hi, what is the particle size?
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The particle size of this product is not determined.
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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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