TABULAR COMPARISON OF SOME NATURAL RESINS

PHYSICAL AND CHEMICAL

SOLUBILITY

CHARACTERISTICS

(I £

<u

£>
f

"o

T3

cJ
y

a

o
o5

*0
"o
3
c f
0

&
£
1?
£
2
1

s
t!
3
M
d

I
fi
e
E
JCS
4) i>
43
a>
(Q V
1
1
•8
8^
"rt"o
1
*o
4->
1
s
0
.Q g
1

1
I
1
I
rjji
I
•§
£
l!
^
bi
^.SJ
1
i
1
11

"S
3
3
•g
S
!l

%
fi
*
— .
tt3
*§e

<3l3
Q
W3
Q
Q
SS
H
H
2
<^
•8
w§

Amber
I
SS
SS
SS
SS
—
—
—
—
SS
__
„_,,,_,
SS
PS
__
250-325
1.546
J5~35
115

Canada balsam
PS
PS
s
s
AS
—
—
s
—
s
s
__
PS
s
s
—
1-530
81-86
89-95

Colophony (rosin)
s
s
s
s
AS
s
s
s
s
s
s
s
s
s
s
120-150
1.525
150-180
150-200

Copaiba balsam
—
AS
. —
s
AS
—
—
—
—
s
AS
—
AS
s
—
—
1.500
75-100
80-100

(Para)

Copals:

Congo
PS
PS
PS
PS
PS
—
—
PS
s
PS
__
PSH
PS
PS
—
180-200
J-545
122.5
132.4

Manilla
s
PS
AS
PS
SS
PS
—
PS-I
s
PS
PS
s
I
PS
I
120-190
1.544
128
178

Sierra Leone Elemi Dammar (Batavia) Mastic Sandarac Shellac
AS PS AS I-PS
s
-PS
PS
s
AS PS S S
AS AS S-PS S S S
PS
s s s I I
PS AS I I I
s I s s s
s
PS-I SS
s s
PS PS
s
PS-S PS-I PS-I
I I
s s s
PS PS AS-S
s s I
AS PS-I PS-S S-PS
I
s s s
PS I-SSH
PS PS PS PS
s s
SS PS AS PS PS SS-PS
s
PS
s I I
130-200 77-121 80-150 95-120
135-150 115-120
1.515 l<$$ 1-545 1.516
109-1 14 17.8-25 1 8-60 50-71 140-1 5 < 48-64'
146-150
25-50
20-65 82-92
143 194-213

O

w

The symbols of solubility are as follows; S = soluble; AS = almost soluble; PS = partly soluble; SS ~ slightly soluble or almost insoluble;
PSH « pardy soluble hot; I = insoluble. The resins and solvents listed are selected because relatively full information is available about them.
The table is not complete and can not be entirely accurate; since the natural resins are not pure substances and, hence, are not easily reproducible,
authorities commonly disagree on their properties. The solubility table has been compiled from several sources, but, chiefly, from A. Tschirch and
E* Stock, Dig Har&t I, no. The data are based upon the crude resin and not upon applied thin films.