DEP GCMS data table, Jan-Feb 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\5973N\02FEB01\31218 . D Vial: 4 Acq On : 1 Feb 2002 5:13 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 1, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\SCAN508.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L ********************************************************************* Peak Number 2 ISOBUTYRALDEHYDE, DIMETHYLA... Concentration Rank 9

R.T. EstConc Area Relative to ISTD R.T. 3.93 0.07 ug/L 29493 1,4-Dichlorobenzene-d4 9.72 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 83 2 Propane, 1,l-dimethoxy-2-methyl- 118 C6H14O2 041632-89-7 83 3 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H1402 000000-00-0 74 4 Propane, 1,1-dimethoxy-2-methyl-... 118 C6H14O2 041632-89-7 74 Abundance Scan 49 (3.933 min): 31218.D (-) m/ z 75.10 100.00% 75

5000 87 55 43 47 3.60 3.80 4.00 4.20 84 । 0'I I' ■ " I " " I " " I " 1 1 11।' I' । 1 ‘111 1110 TTTT m/ Z 87.10 31.48% /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

5000 87 3.60 —. II.... L, 3.80 4.00 4.20 55 m/z 55.10 23.58% 29 41 47 59 71 0-mmmP ... 111IPTIPPTITT — i ■ i ‘■ i ■ - Tl/Z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17846: Propane, 1,1-dimethoxy-2-methyl- 75 3.60 3.80 4.00 4.20 5000 m/z 47.00 14.81% 87 55 4 47 m/z—> 31 011' 11' I' 1111111111 +4+4+ 59 1mTITITT 71

20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 '■j" "i"

Abundance #17847: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1,1-Dimethoxyi... 75 3.60 3.80 4.00 4.20 m/z 43.10 7.06% 5000 87 31 47 55 I 59 71 43 T-p-l- ' 111 ‘ 11" " i rPTri I " ' tmmt +T-p-TTTTTT A \ 00000 0HTTT n/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

31218.D SCAN508.M Mon Feb 04 08:41:42 2002 Page 4

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