GCMS analysis results for sample AE01508, Mar 2002

NYC 9/11 Public Portal Document Library Search Compound Report . Data File : C:\MSDCHEM\l\5973N\02FEB21\01507.D Vial: 4 Acq On : 21 Feb 2002 1:24 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 21, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\HP022102.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L ********************************************************************* Peak Number 3 Propane, 1,1-dimethoxy-2-me... Concentration Rank 8

R.T. EstConc Area Relative to ISTD R.T.

3.94 0.06 ug/L 27879 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Propane, 1,1-dimethoxy-2-methyl-... 118 C6H14O2 041632-89-7 50 2 Propane, 1,l-dimethoxy-2-methyl- 118 C6H1402 041632-89-7 50 3 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 50 4 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 50 Abundance Scan 50 (3.938 min): 01507.D (-) m/z 75.00 100.00% 75

5000 87 55 1 ■ i • ■ ■ ■ i ■ ' ■ i ■ ■ ■ ■ i • ■ ‘ ' i 44 47 3.60 3.80 4.00 4.20 71 0- ■ • i1 ■ ■ ■ i ■ — ■ -4H — TT m/z 87.10 38.47% mz-> 20 25 303540455055 60 65 70 75 80 85 90 95 Abundance #17844: Propane, 1,1-dimethoxy-2-methyI-$$ Isobutylaldehy... 75

5000 1 ■ i ■ ■ 1 ■ i ■ ■ 1 ■ i ■ • ■ ■ i ■ ■ ■ ' i

87 3.60 3.80 4.00 4.20 47 55 m/z 55.00 29.26% 31 0ii । ■ ■ ■ ■ ।1 ■ ■ ■ ।1 ■1 ■ । । 43■ I ■ ■ ■ i" 59 7,1 mntu —mmm7t 111111 n/z—> 20 a 30 35 40 45 55 60 65 70 75 80 50 85 90 95 Abundance #17846: Propane, 1,1-dimethoxy-2-methyl- 75 < * । ■ t * * i ‘ 1 1 ' i 1 1 ' 1 i 3.60 3.80 4.00 4.20 5000 m/z 47.00 17.10% 87

m/z—> 31 041.।11... ।.

Abundance 59 ,9 47 71 .. ........ *911*mT 55

1 " 111 rr ' I' " I " "I ''' 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 #17849: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1,1-Dimethoxyi... V WMuuwy — ——— 75 3.60 3.80 4.00 4.20 m/z 85.90 9.84%

5000 55 87 WMMw 29 41 47 59 71 0141 > ।»111 > > 11J > ।' 11 — i ■ 111. ■ ■ 11 ■»■ ■ 111»■ 1' i' ■1 ■ i ■' ■ ■ i 1 ‘ ■ ■ i ■ ' ' 1 i ■ ■ ■ ■ i ' ■ ■ ■ । /z—> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.60 3.80 4.00 4.20

01507.D HP022102.M Mon Feb 25 10:54:50 2002 Page 5

NYC-WTC_000009974