CAS 9004-57-3 Ethyl Cellulose [90-110mPa·s, 5% in Toluene + Ethanol (80:20) at 25°C]

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Ethyl Cellulose [90-110mPa·s, 5% in Toluene + Ethanol (80:20) at 25°C]

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Catalog Number

ACM9004573-19

CAS Number

9004-57-3

Product Name

Ethyl Cellulose [90-110mPa·s, 5% in Toluene + Ethanol (80:20) at 25°C]

Category

Polymers

IUPAC Name

(2R,3R,4S,5S,6R)-5-[(2S,3R,4S,5S,6R)-4,6-bis(ethoxymethyl)-3,5-dihydroxyoxan-2-yl]oxy-3-ethoxy-6-(hydroxymethyl)oxane-2,4-diol

Molecular Weight

440.5g/mol

Molecular Formula

C19H36O11

Canonical SMILES

CCOCC1C(C(OC(C1O)OC2C(OC(C(C2O)OCC)O)CO)COCC)O

InChI

InChI=1S/C19H36O11/c1-4-25-8-10-13(21)12(9-26-5-2)29-19(14(10)22)30-16-11(7-20)28-18(24)17(15(16)23)27-6-3/h10-24H,4-9H2,1-3H3/t10-,11+,12+,13-,14+,15-,16+,17+,18+,19-/m0/s1

InChI Key

GJQHNBFXPPDVQM-KSQRYXQLSA-N

Melting Point

240-255 °C

Density

1.07-1.18

Solubility

INSOL IN GLYCERIN AND PROPYLENE GLYCOL;FREELY SOL IN MIXT OF AROMATIC HYDROCARBONS WITH ALCOHOL;Has an ethyl degree of substitution (DS) in the range of ~2.2 - 2.7. ... water soluble at DS ~1.2 ... Above a DS of ca 2.5, soluble in many polar solvents.;Soluble in most organic liquids

Application

Ethyl cellulose serves multiple purposes across various applications due to its unique properties. As a low-density polymer with dimensions known to provide excellent dimensional stability and low moisture absorption, it is frequently utilized for its film-forming and binding abilities. In pharmaceutical formulations, ethyl cellulose is primarily employed as a hydrophobic coating agent for tablets and granules, helping to modify drug release, mask unpleasant tastes, and improve formulation stability. It can create water-insoluble films, which are pivotal in controlled-release systems, and its solubility in diverse solvents allows for versatile varnish formulations. The material's ability to produce strong, durable films is enhanced with higher-viscosity grades, which may be modified for different solubility characteristics through additives like hypromellose or plasticizers. Furthermore, ethyl cellulose can be used in the production of microcapsules for controlled drug delivery, taking advantage of its capability to absorb pressure and protect coatings during compression. In topical formulations, it acts as a thickening agent, making it valuable in creams, lotions, and gels. Beyond pharmaceuticals, ethyl cellulose is also found in cosmetics and food products, showcasing its broad applicability.

Color/Form

WHITE NEEDLES FROM BENZENE;FREE-FLOWING, WHITE TO LIGHT TAN POWDER;AVAILABLE COMMERCIALLY AS CLEAR FILM OR SHEET;White, granular, thermoplastic solid

Complexity

481

Covalently-Bonded Unit Count

EC Number

618-384-9

Exact Mass

440.225762g/mol

Formal Charge

Heavy Atom Count

Log P

5.5 (LogP)

Monoisotopic Mass

440.225762g/mol

Other Experimental

MEDIUM-TYPE VISCOSITY GRADE CONTAINS LESS THAN 46.5% ETHOXY GROUPS; STANDARD-TYPE VISCOSITY GRADE CONTAINS 46.5% OR MORE;Lowest density of commmercial cellulose plastics; high dielectric strength; softening point 100-130 °C;Inert to alkalies and dilute acids; compatible with resins, waxes, oils, and plasticizers;ODORLESS & TASTELESS /CELLULOSE ETHERS/;The ethoxyl content of ethyl cellulose affects thermal behavior.;Sol in ethyl acetate, ethylene dichloride, benzene, toluene, xylene, butyl acetate, acetone, methanol, ethanol, butanol, carbon tetrachloride. /47% product/;FREELY SOL IN CHLOROFORM, CYCLOHEXANE FREELY SOL IN METHYL ACETATE /MEDIUM VISCOSITY/;/Ethyl cellulose/ forms films of good thermostability and excellent flexibility and toughness.

Refractive Index

Index of refraction: 1.47;FORMS FILMS THAT HAVE REFRACTIVE INDEX OF ABOUT 1.47

Rotatable Bond Count

Stability

Very stable chemically /Cellulose ethers/

XLogP3

-2.4

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