The units of the molecular weight for this product is Da.
419028
Cellulose acetate
average Mn ~50,000 by GPC
Synonym(s):
Acetylcellulose
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form
powder
mol wt
average Mn ~50,000 by GPC
extent of labeling
39.7 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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Related Categories
1 of 4
This Item | 180955 | Y0000784 | 1098300 |
|---|---|---|---|
| refractive index n20/D 1.475 (lit.) | refractive index n20/D 1.475 (lit.) | refractive index n20/D 1.475 (lit.) | refractive index n20/D 1.475 (lit.) |
| 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.) |
| mol wt average Mn ~50,000 by GPC | mol wt average Mn ~30,000 by GPC | mol wt - | mol wt - |
| extent of labeling 39.7 wt. % acetyl | extent of labeling 39.8 wt. % acetyl | extent of labeling - | extent of labeling - |
| impurities ≤3.0% water | impurities ≤3.0% water | impurities - | impurities - |
General description
Cellulose acetate (CA) is a class of cellulose based esters which can be produced by a reaction of cellulose with acetic acid and acetic anhydride. It can be used in a variety of forms such as films, membranes, and fibers. It can be used as a biodegradable polymer in medical and automotive applications.[1]
Application
Features and Benefits
- High purity grade , biodegradable suitable for demanding industrial and research applications.
- High Molecular weight for enhanced strength, film forming properties and adhesion
- Offered in powder form easy to handle, measure, and dissolve.
- Low moisture content ensures stability and prevents hydrolysis during storage and processing.
- The refractive index makes it suitable for lenses, coatings, and display technologies.
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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Additive manufacturing of cellulosic materials with robust mechanics and antimicrobial functionality
Pattinson SW and Hart AJ
Advanced Materials Technologies, 2(4), 1600084-1600084 (2017)
Investigation of bio polymer electrolyte based on cellulose acetate-ammonium nitrate for potential use in electrochemical devices
Monisha S, et al.
Carbohydrate Polymers, 157(4), 38-47 (2017)
Properties and applications of cellulose acetate
Macromolecular Symposia, 262(1), 89-96 (2008)
S Ramesh et al.
Carbohydrate polymers, 91(1), 14-21 (2012-10-10)
Polymer electrolytes were developed by solution casting technique utilizing the materials of cellulose acetate (CA), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and deep eutectic solvent (DES). The DES is synthesized from the mixture of choline chloride and urea of 1:2 ratios. The increasing
Hacı Ali Güleç
Colloids and surfaces. B, Biointerfaces, 104, 83-90 (2013-01-10)
The aim of this study was to investigate the effects of surface characteristics of plain and plasma modified cellulose acetate (CA) membranes on the immobilization yield of β-galactosidases from Kluyveromyces lactis (KLG) and its galacto-oligosaccharide (GOS) yield, respectively. Low pressure
Articles
Electrospinning technique applications discussed, emphasizing control of nanofibers and assembly into 3D architectures.
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Please indicate the unit of the number average molecular weight (Mn) of Cellulose acetate (CA) in powdered form (average Mn ~50,000 by GPC, Sigma Aldrich).
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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 acetylation of this product?
1 answer-
This compound is highly acetylated. The specification sheet shows that it is between 39.20 and 40.20 percent acetyl groups by weight:
https://www.sigmaaldrich.com/specification-sheets/376/778/419028-BULK_______ALDRICH__.pdf
For each disaccharide group as shown in the structure on the specification sheet, on average, 5 of the 6 R groups are acetyl groups, and only 1 of the 6 is a hydrogen.Helpful?
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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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