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180955

Sigma-Aldrich

Cellulose acetate

average Mn ~30,000 by GPC

Synonym(s):

Acetylcellulose

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About This Item

CAS Number:
9004-35-7
MDL number:
MFCD00081496
UNSPSC Code:
12162002
NACRES:
NA.23
Pricing and availability is not currently available.

form

powder

Quality Level

200

mol wt

average Mn ~30,000 by GPC

extent of labeling

39.8 wt. % acetyl

impurities

≤3.0% water

refractive index

n20/D 1.475 (lit.)

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

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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.[1]

Application

Cellulose acetate was used in the fabrication of gold microelectrode for electrochemical monochloramine measurement.[2] Cellulose acetate based membranes are used in the separations in aqueous systems and in reverse osmosis process.[3] It has been reported to be used to desalinate seawater.[4]Cellulose acetate was used for biosensor encapsulation.[5] It was used in the preparation of cellulose acetate nanofibre felt structure,[6] cellulose acetate fibers.[7]

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV7462
MKCW4892
MKCV5391
MKCW8981
MKCW1891

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Cellulose acetate reverse osmosis membranes: optimization of the composition
Duarte AP, et al.
Journal of Applied Polymer Science, 100(5), 4052-4058 (2006)
Fabrication and bioseparation studies of adsorptive membranes/felts made from electrospun cellulose acetate nanofibers
Zhang L, et al.
Journal of Membrane Science , 319(1), 176-184 (2008)
Solvent control of cellulose acetate nanofibre felt structure produced by electrospinning
Haas D, et al.
J. Mater. Sci., 45(5), 1299-1306 (2010)
Monochloramine-sensitive amperometric microelectrode: optimization of gold, platinum, and carbon fiber sensing materials for removal of dissolved oxygen interference
Lee WH, et al.
Ionics, 1-12 (2015)
Cellulose acetate reverse osmosis membranes: optimization of preparation parameters
Duarte AP, et al.
Journal of Applied Polymer Science, 103(1), 134-139 (2007)
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Questions

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  1. 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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  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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