GCMS analysis results for sample AE09574, May 2002

NYC 9/11 Public Portal Document . Data File C:\MSDCHEM\l\DATA\050902\9574.D Vial: 10 Acq On 9 May 2002 10:37 pm Operator: Mclean Sample 5/8 kb Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L Peak Number 2 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 5.98 17.66 ug/L 19178900 1,4-Dichlorobenzene-d4 9.94 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2/90 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 83 3 2 -Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 72 4 Acetone______ 58 C3H60 000067-64-1 32 Abundance Scan 494 (5.982 min): 9574.D (-485) (-) m/ z 43.10 100.00% 43

5000 59 101 5.60 5.80 6.00 6.20 6.40 ........... 37 I, 53, 69 77 83 | 119125 01 ' 1 1 1 1 1 1 1 1 1 1 1 I 1 1 1 'I' +—+ I ' ■ 1 1 i ■ ■ 1 ■ i ■ ■ ■ ■ i ■ ■ ' 1 i 1 1 ' r i ■ ' 1 ■ 1 1 ' ' ' I ' 1 m/z 59.10 34.74% n/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000 59 5.60 5.80 m 6.00 6.20 6.40 m/ z 58.10 22.35% 15 101

n/z-> 01 P l, I ■ 10 20 25131,371 +53+ 30 40 50 60 83 I ' ■ ■ ■ i ■ ■ ■ ■ i ''' ' ■ i ■ 1

70 80 90 , | ■ 1 i 1 ■ ■ ' i ■ ■ ' ■ i ■ ■ 1 ■ i ■ ■

100 110 120 130 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 43 5.60 mm 5.80 6.00 6.20 6.40 5000 m/z 101.10 13.52% 59 27 37 — 101 53 67 77 83 91 , | Of - 1-' ' I*’ miz-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #109756:2-Pentanone, 4-hydroxy-4-methyl- ■ i ■ ■ ■ ■ । ■ 43 5.60 5.80 6.20 6.40 m/ z 41.15 5.99% 5000 59

93 no 101

m/z-> 0 —10. —20 25,31,37,1 30 40 1... 'I 83 93 । i ! ■ ■ • ■ । ■ ■ ■ ■ । 50 60 70 80 90 100 110 120 130 • i ■ ■ ■ । । < ■ ■ ■ । । । ■ i ■ ■ 5.60 5.80 6.00 6.20 6.40

9574.D 050102.M Mon May 13 11:49:48 2002 Page 5

NYC-WTC_000023116