Chemistry Reference
In-Depth Information
(
Continued
)
Cellulose Acetate Phthalate
pH range where soluble
>
6.0
Amenable methods of dispersion
manufacture
Melt extrusion, spray drying
Use in marketed dispersion products
None
Ethyl Cellulose
Structure
CH
2
OC
2
H
5
O
OC
2
H
5
O
OC
2
H
5
n
Synonyms
Aquacoat ECD; Aqualon; Ashacel; E462;
Ethocel; ethylcellulosum
Surelease
Molecular weight range (g/mol)
40,000
-
140,000
Solubility parameter, i (MPa
0.5
)
18.6
-
18.8
T
g
range (
C)
129
-
133
°
Water uptake (% water at 75% RH)
3%
∼
Solvent solubility
Soluble in chloroform, methyl acetate, and
tetrahydrofuran, and in mixtures of aromatic
hydrocarbons with ethanol (95%); chloroform,
ethanol (95%), ethyl acetate, methanol, and
toluene
pH range where soluble
Insoluble
Amenable methods of dispersion
manufacture
Melt extrusion, spray drying
Use in marketed dispersion products
None
