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Table 3 Identification of the peaks in the second- and third-shot pyrograms shown in Fig. 5a, b (italics: base peak ion)

From: Synthetic materials in art: a new comprehensive approach for the characterization of multi-material artworks by analytical pyrolysis

No

Peak identification

Main ions (m/z)

1

2-Chloroaniline

127, 102, 92, 65

2

2-Chlorophenyl isocyanate

153, 125, 90, 63

3

2,6-Diisocyanatotoluene

174, 145, 118, 91, 76, 64

4

1,6-Diisocyanatohexane

99, 85, 69, 56

5

2-Amino-6-isocyanato toluene

148, 120, 106, 93, 65, 52

6

Isomer of 2-amino-6-isocyanato toluene

148, 119, 106, 93, 65, 52

7

Isomer of 2-amino-6-isocyanato toluene

148, 119, 106, 93, 65, 52 

8

2-Naphthol

144, 115, 89, 74, 63

9

Benz(c,d)indol-2(1H)-one

169, 141, 114, 87, 63

10

2-Naphthol trimethylsilyl ether

216, 201, 185, 145, 127, 115, 100, 73

11

Diethyl phthalate

177, 149, 105, 76, 65

12

4-Chloro-2-nitroaniline

172, 142, 126, 114, 99, 90, 63, 52

13

Unknown

183, 154, 128, 114, 88, 75, 63

14

Tripropylene glycol 5

161, 117, 103, 72, 59

15

Unknown

231, 215, 200, 185, 158, 130, 115, 103, 73

16

Tripropylene glycol 6

117, 87, 73, 59

17

2,4-dinitroaniline

183, 153, 107, 91, 79, 63, 52

18

Hexadecanoic acid, trimethylsilyl ester

313, 145,132, 129, 117, 73, 55

19

Benzopyridine

185, 129, 102, 76, 63, 51

20

Octadecanoic acid, trimethylsilyl ester

341, 145, 132, 117, 73, 55

21

Ether oligomers

175, 117, 103, 87, 73, 59