DEP GCMS data table, Jan-Feb 2002

NYC 9/11 Public Portal Document Library Search Compound Report . Data File : C:\MSDCHEM\1\5973N\02FEB27\02386.D Vial: 2 Acq On : 27 Feb 2002 4:07 pm Operator: Sample : 508 scan Inst : Instrumen Mise 2002 : February 27, Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\l..-\HP022102.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L **************************************** * * * *** * ** ** * * * ** ** * ********** Peak Number 2 ISOBUTYRALDEHYDE, DIMETHYLA... Concentration Rank 7 R.T. EstConc Area Relative to ISTD R.T. 3.93 0.08 ug/L 41050 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual

I ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 83 2 Propane, 1,1-dimethoxy-2-methyl- 118 C6H14O2 041632-89-7 83 3 Propane, 1,l-dimethoxy-2-methyl-... 118 C6H14O2 041632-89-7 64 4 ISOBUTYRALDEHYDE, DIMETHYLACETAL■.. 118C6H14O2 000000-00-0 64 Abundance Scan 49 (3.927 min): 02386.D (-) m/z 75.00 100.00% 75

5000 87 55 .................... ......................

l r 1 i ' ' ■ ■ i 1 ' 1 ■ i ' ■ ■ ' i ' ■ 1 ' i

71 3.60 3.80 4.00 4.20 0 m/z 87.10 36.52% m/z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17849: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1,1-Dimethoxyi... 75

000— i 5000 87 3.60 3.80 4.00 4.20 55 m/z 55.10 23.37% 41 47

/z-> 0'I । ■ ■ • ■ । 20 25 29 'I l !■।'l> 30 35 —H 50 40 45 59 71 111111' ‘1111111'111 55 60 65 70 75 80 ।....... "Tr 1 ■ i'1" i11 85 90 95 Abundance #17846: Propane, 1,1-dimethoxy-2-methyl- 75 A An , 3.60 3.80 4.00 4.20 5000 m/z 41.10 11.47% 87 55 31 . 47 0tmPTT ,t । 43 i I 59 71 ।. 11, IPTT’I , । ■ ।111 ■ 11 1 > ■ 11 > 11 i ■ ■ ■ । ■11 ■ 1' i1 ■ " । " m/z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17844: Propane, 1,1-dimethoxy-2-methyl-$$ Isobutylaldehy... A .A 4,AA./A 75 3.60 3.80 4.00 4.20 m/z 47.05 9.52%

5000 87 31 47 55

m/z-> 1 0 ' i111 ■ i ■ ■1111 ■1 ■ n1111111' 11 20 25 30 35 40 431 45 ■ ■ i ■ ■ 50 59 71 1111' 11111111 P 1 111— i' ‘ ■ i 11 VW...... 2 ' 1 I ' 1 1 ' 1 1 1 ' 1 I ' 1 1 1 1 1 1 ' ' I 55 60 65 70 75 80 85 90 95 3.60 3.80 4.00 4.20

12386.D HP022102.M Thu Feb 28 08:47:09 2002 Page 4

NYC-WTC_000005033