GCMS analysis results for sample AE11417, May 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\1\DATA\052002\11417.D Vial: 7 Acq On : 20 May 2002 6:10 pm Operator: Mclean Sample : 5/16 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 16.49 ug/L 13655300 1,4-Dichlorobenzene-d4 9.93

Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 2-Pentanone, 4 -hydroxy-4 -me thyl- 116 C6H12O2 000123-42-21 86 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 72 3 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 64 4 Acetone_______ 58 C3H60 000067-64-1 32 Abundance Scan 492 (5,970 min): 11417. D (-486) (-) m/z 43.10 100.00% 4f3

5000 59 / 101 560 5.80 6.00 6.20 6.40 36, „ 53, 67■ i ■ ■ 77 83 ,| 117■ i 1125 m/z 34.11% 01 1 I 1 1 ' 1 I 1 1 1 1 1 ' 1 rl I ' +T < | , ■ i ■ ■ ■ ■ i ■ ■ ■ < i 1 ■ ■ ■ i ‘ ■ ■ ' ■ i ■ ■ 59.10 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 1I1II1 59 5.60 5.80 6.00 6.20 6.40 m/z 58.10 21.31%| 15 101

m/z-> OP 10 + 20 2531,37, 30 40 IT+ 50 83 , | 53, 1B——m—mwTTEUTT 60 70 80 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 13.26%

RI 93 101 ........ 25,31 371 83 I 01 1 1 1 1 1 1 1 I ' 1 ‘du 1 ' 1 | 1 I'" I "'I 1 1 1 ' ‘ ’ i 1 ' । 1 1 11 1 1 1 । 1TT14 । i । । । । , । । j m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 43 5 60 5.80 6.00 6.20 6.40 m/z 41.10 5.65%

5000 59 101 0 a 77,1 37,1 —53 67 77 83 91 , | I 1 1 ■ ‘ i ■ 1 ' 1 i 1 ■1 1 i ■ ■ 1 1 i 1 ■ 1 1 i ■ 1 1 11 1 1 1 ' i ' 1 __ _________ _ ____________ t r‘i । T-r-rr-]-r rr 7171 ■ 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

11417.D 050102.M Thu May 23 10:45:19 2002 Page 6

NYC-WTC_000025381