GCMS analysis results for sample AE01638, March 2002

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GCMS laboratory results for sample AE01638 conducted on March 5, 2002, showing surrogate recovery and unknown compounds.

NYC-WTC_000010126–000010145

Folder label: “GCMS X 1/23/02 A 2/21/02”

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NYC 9/11 Public Portal Document Library Search Compound Report

. .Data File: C:\MSDCHEM\1\5973N\02FEB21\01638.D Vial: 7 Acq On : 21 Feb 2002 8:11 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 2 ISOBUTYRALDEHYDE, DIMETHYLA... Concentration Rank 6

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

3.94 0.10 ug/L 47865 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual

I ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 78 2 Propane, 1,1-dimethoxy-2-methyl- 118 C6H14O2 041632-89-7 64 3 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 64 4 Propane, 1,1-dimethoxy-2-methyl-... -118 C6H1402 041632-89-7 64 Abundance Scan 50 (3.938 min): 01638.D (-) m/z 75.00 100.00% 75

5000 87 55 43 47 71 3.60 3.80 4.00 4.20

miz-> ob 5 10 15 20 25 3035404550556065 70 75 80859095 i ■ ■ “ i ■ ■ “ i ‘" m ‘1’113937 m/z 87.00 42.42% Abundance #17848: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75

5000 87 • > i < • • • i ■ < 3.60 3.804.00 JU 4.20 55 m/z 55.10 25.09% 15 27 31 47

mfz-> Of-rrrq-mrT 220I————u————d*—n31r 5 lTp-H 10 15 202530 35 404550556065 70 75 80859095 59 HIP 71

Abundance #17846: Propane, 1,1 -dimethoxy-2-methyl- 75 • ■ i ‘ ■ ■ • i ■ ■ i ■ ■ ' ■ i ' ■ ■ ' i 3.60 3.80 4.00 4.20 5000 m/z 47.10 20.04% 87 55 AQ 47 71 31 —HH 59 miz-> OfTTHIPTDTTTTT Abundance '11 'I■■ ■' P - —pt 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 SO 95 #17847: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75 I ll f’MAn 3.60 3.80 4.00 4.20 m/z 43.10 12.78%

5000 87 31 47 55 59 7,1 0 “ ■ ■ i •1 ‘ ■ i • ■ ■ ■ i ‘ ‘ ■ ■ i' “ ■ i'I ■' ■ i • “ ■ i ■ ■' 431■ I ■ mmmpu '"■I""!1 *uur ,0 180110,104) /N A nfe-> 5 10 15 202530354045505560 65 70 75 80859095 3.60 3.80 4.00 4.20

01638.D HP022102.M Mon Feb 25 10:55:50 2002 Page 4

NYC-WTC_000010133

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NYC-WTC_000010133Source: NYC Law Department, mirrored locally

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