CAS 9004-57-3 Ethyl cellulose, 18-22 mPa.s, 5% in toluene/isopropanol 80:20

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Ethyl cellulose, 18-22 mPa.s, 5% in toluene/isopropanol 80:20

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Catalog Number

ACM9004573-11

CAS Number

9004-57-3

Product Name

Ethyl cellulose, 18-22 mPa.s, 5% in toluene/isopropanol 80:20

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, with a viscosity of 18-22 mPa.s at 5% in a toluene/isopropanol 80:20 mixture, serves various roles due to its unique properties and versatility in formulation. Primarily used in pharmaceutical applications, it functions as a hydrophobic coating agent to modify drug release patterns, mask unpleasant tastes, and enhance formulation stability. Its ability to form water-insoluble films makes it a valuable ingredient in controlled-release systems, particularly when dissolved in organic solvents or employed as an aqueous polymer dispersion like Aquacoat ECD or Surelease. Beyond pharmaceuticals, ethyl cellulose acts as a binder, film former, and thickener in topical formulations, including creams and lotions, and is commonly used in cosmetic and food products as well. The polymer's low density and resistance to moisture absorption contribute to its dimensional stability, while its solubility in various solvents allows for diverse applications, including injection molding and varnish preparation. Additionally, ethyl cellulose's ability to modify its properties with additives, such as plasticizers or hypromellose, further expands its functionality in different industrial and consumer contexts.

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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