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Substance
Dodecane (C12)
Naphthalene
1-Methylnaphthalene
Tetradecane (C14)
1-Ethylnaphthalene
Hexadecane (C16)
TXIB
CAS-Nr.
112-40-3
91-20-3
90-12-0
629-59-4
1127-76-0
544-76-3
6846-50-0
mw
(g/mol)
170,33
128,17
142,20
198,39
156,22
226,44
286,41
Formula
C
12
H
26
C
10
H
8
C
11
H
10
C
14
H
30
C
12
H
12
C
16
H
34
C
16
H
30
O
4
mp
(°C)
-9,6
80
-31
6
-15
18
-70
bp
(°C)
216
218
245
254
260
287
280
density
(g/ml)
0,7487
1,1400
1,0200
0,7628
1,0080
0,7733
0,9400
TXIB= 2,2,4 - Trimethyl - 1,3 - pentanediol diisobutyrate
mw: molecular weight - mp: melting point - bp: boiling point
METHOD FOR THE PERMEATION TEST
The films were placed in special permeation cells and stored at the selected temperature. In the
lower part of the cells, an intentionally contaminated cardboard sample was placed. This cardboard
was spiked with the test substances in a way that their concentration was around 750µg of sub-
stance per g of cardboard. The test films were in direct contact with the cardboard. The upper part
of the cells was separated from the lower part by the samples. This part was purged with a flow
of pure nitrogen. The nitrogen flow transported the permeated substances into the detection unit.
Calibration was performed with injections of know amounts of the substances.
Green highlighted fields: permeation in qequilibrium
Yellow highlighted fields: observed maximum of permeation rate (no equilibrium)
Permeation
rates in
(µg/d*dm²)
SET 1
Dodecane (C12)
Sample A
5081
4721
Naphthalene
707
679
1-Methylnaphthalene
1584
1602
Tetradecane (C14)
1372
1408
1-Ethylnaphthalene
992
1013
Hexadecane (C16)
240
237
TXIB
249
239
SET 2
12 µm PET
0,010 0,011
<0,006
<0,006 0,008
<0,006
0,007 <0,006
0,010
Sample C
0,010 0,008
<0,006
<0,006
<0,006
<0,006
<0,006
<0,006
<0,006
<0,006
<0,009
<0,009
Sample D
0,011
0,009 <0,006
0,020 <0,006
<0,006
0,014
0,020
<0,009
Sample K
1,51
0,39
4,99
5
0,30
DL Set 1
DL Set 2
0,218
0,006
0,191
0,005
0,243
0,006
0,368
0,009
0,225
0,006
0,221
0,006
0,256
0,006
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