GCMS blank analysis results sample AE11926, May 2002

NYC 9/11 Public Portal Document Llorary searcn compound keport

Data File : C:\MSDCHEM\1\DATA\052302\522LB.D Vial: 3 Acq On : 23 May 2002 11:36 am Operator: Mclean Sample : 5/22ad Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 10 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 5.92 10.60 ug/L 5533900 1,4-Dichlorobenzene-d4 9.89 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 83, 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 50 3 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2/42 4 Acetic acid. 1,1-dimethylethyl e... 116 C6H12O2 000540-88-5 25 Abundance Scan 484 (5.923 min): 522LB.D (-476) (-) m/z 43.10 100.00% 43

5000'

0! -----PPP-344 59

, 48 53,, ■ [ ■ ■ ■ 69 83 88 101 ,| ■ i ■ • ■ ■ i .............................. 1 i ' .... y.... 5.60 5.80 6.00 m/z 59.10 6.20 41.15% 1,1 1 I ' niz-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109755:2-Pentanone, 4-hydroxy-4-methyl- 43

5000 ■ 1 • i 1 • ' ■ i • • ■ ■ i 1 1 ■ 1 i ' ■ ■ • i 59 5.60 5.80 6.00 6.20 m/z 58.10 22.34% 15 101 ■ 1 1 ' ■*' 1 r- ■26,4138,4 +53+ —T—ummTTT 83 — O niz-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 43 TTTRTTrrrmrrrT 5.60 5.80 6.00 6.20 5000 m/z 101.10 16.00% 59 101 0+ ...........3732 381 +48,53, • ■ i ■ ■ ' ‘ i 11 1 i 1 ‘ 1 ' I ' 67 72 77 83 91 96, | I ■ ' ■ ■ i ■ 1 ■ ■ i ■ ■ ■ ■ i ■ ■ • 1 i 1 ■ ■ ■ i ■ nfz~> Abundance 10 20 30 40 50 60 70 80 #109756:2-Pentanone, 4-hydroxy-4-methyl- 43 90 100 110 ........IV....... 5.60 5.80 6.00 6.20 m/z 41.10 6.50% 5000 59

33 . 93 101 0 _....... 26,31 381 1—4+ ■ • i■ • * ‘l 1 ■ । i । ■ > ■ ‘ । i 83 | TPPm—mTPT n/z-> 10 20 30 40 50 60 70 80 90 100 110 5.60 5.80 6.00 6.20

522LB.D 052202.M Wed May 29 09:38:57 2002 Page 13

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