GCMS comments for sample AE10206 re-extraction, May 2002

NYC 9/11 Public Portal Document ‘‘PY

Data File : C:\MSDCHEM\1\DATA\051602\10206.D Vial: 7 Acq On : 16 May 2002 7:25 pm Operator: Mclean Sample : 5/10 eh 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 3 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 5.97 17.09 ug/L 14350400 1,4-Dichlorob'enzene-d4 9.94 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4 -hydroxy-4-methyl- 116 C6H12O2 000123-42-2 2 2-Pentanone, 4-hydroxy-4 -methyl- 116 C6H1202 000123-42-2 3 2 -Pent anone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 64 4 Acetone______ 58 C3H6O 000067-64-1 32 Abundance Scan 492 (5.970 min): 10206.D (-484) (-) m/ z 43.10 100.00% 43

5000 59 ...................................... ............... 101 560 5.80 6.00 6.20 6.40 0! .............. 371 H ' I 531’7 TT T-r-p-r-r-rT-r-r-r-r-p-r-r-r^ 69 83 . 1. 117 125 m/z 59.10 34.34% m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #109755:2-Pentanone, 4-hydroxy-4-methyl- 43

5000 59 560 5.80 6.00 6.20 6.40 m/z 58.05 20.91% 15 31 101

n/z-> Of I 25, I 37, 1 i 1 | 1 I’rt | i । rl | । i r, | I 10 20 30 40 50 +53+ I........ 60 70 80 83 , | T-prh-T-p-r-r-r+Yr-i-r-i-p-r-r-p-r-r-r-r-p-r 90 100 110 120 130 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 ....... K....... 560 5.80 6.00 6.20 6.40 5000 59 m/z 101.10 13.49%

........ 25,31 37,1 .......... 'I 93 83 . 93 101 | 01 ■ ■ i ■ ■ ■ ■ ...............|’ , । i'i'i I ' ' ' ■ i 1 1 1 1 i ' 1 ' ' i ' ' ' ' i 1 1 ' ' i 1 ■ ' 1 I 1 ' 1 ' 1 1 1 m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 4 560 5.80 6.00 6.20 6.40 m/z 41.10 5.72% 5000

59 . 101 27 37 53 67 77 83 91 , | 0 0 11,1,1, Mll +T+ I ■ ' ' 1 i ■ ‘ ‘ ' i ' ' ' ' i ' ■ ■ 1 i 1 ‘ ' i ‘ ‘ ' i ' ' ' ' i ' 1 TdrRTTTTTT m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 5.60 5.80 6.00 6.20 6.40

10206.D 050102.M Fri May 17 15:02:45 2002 Page 6

NYC-WTC_000024177