GC/MS data fragment, May 28 2002

NYC 9/11 Public Portal Document LLDL CL Y DEaLti wopOuiU RCpOL L

Data File : C:\MSDCHEM\l\DATA\051702\11416.D Vial: 25 Acq On : 18 May 2002 9:10 am Operator: Mclean Sample : 5/15 eh Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\l\METHQDS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 1 2-Pentanone, 4-hydroxy-4-me ... Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 5.96 18.37 ug/L 11335700 1,4 -Dichlorobenzene-d4 9.93 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4 - hydroxy - 4 - me t hyl - 116 C6H12O2 000123-42-2 90 2 2-Pentanone, 4 -hydroxy-4 -methyl- 116 C6H12O2 000123-42-2 72 3 2 -Pent anone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 64 4 Acetone_____ 58 C3H60 000067-64-1 32 Abundance Scan 491 (5,964 min): 11416.D (-483) (-) m/ z 43.10 100.00% 43

5000 59 101 5.60 5.80 6.00 6.20 6.40 69 83 | 01 ............... ...................... .. 1 ' I ’ ' 1 1 I ' 1 1 ' I ' 1 1 ' I ' +48,53+ i ■ ■ 1 1 i 1 1 ■ ■ I ■ ■ 1 ' i 1 1 • 1 i 1 ■ ■ ■ i ■ m/z 59.10 34.16% tt/z—> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109755:2-Pentanone, 4-hydroxy-4-methyl- 43

5000 59 5 60 5.80 6.00 6.20 6.40 m/z 58.10 22.40% 15 31 101

m/z-> Ol .... 10 1.... 20 29,71.38, 30 40 53 , ' I ■ 1 1 1 —1 ■ ■ 1 i 83 ' l —44 50 60 70 80 , | ■' ■ ■ 1 i 1 1 ' ' i 1 ' ■ 1 i ‘

90 100 110 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 5.60 5.80 6.00 6.20 6.40 5000- 59 m/z 101.10 13.65%

22 83 _ 93 101j n/z-> O+ ......... 10____ 20 29,71.34 30 40 " PT* 1 i ■ ’ ■ ■ i ■ ' ■ ■ i 1 1 1 1 i 1 1 ' ' r1 1 1 1 1 1 50 60 70 80 90 100 110 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 43 5.60 5.80 6.00 6.20 6.40 m/z 41.10 6.13% 5000 59 no 101 0 ........... 27.32 38,1 11,481 1 53„ ‘ | ■ ■ ■ ' ( । l ' 1 1 ''I/4 i r'l'I'l 67 72 77 83 91 96, | I 1 1 1 ' I ■ ' 1 ■ i 1 1 1 1 i 1 1 ' 1 i 1 1 ■ 1 i 1 *Te)utevifTTTTeeurTt m/z-> 10 20 30 40 50 60 70 80 90 100 110 5.60 5.80 6.00 6.20 6.40

11416.D 050102 .M Tue May 21 15:58:24 2002 Page 3

NYC-WTC_000025339