DEP GCMS data table, Jan-Feb 2002

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Multi-page laboratory data sheet containing sample analysis results and metadata for DEP GCMS records from January to February 2002.

NYC-WTC_000004494–000004704

Folder label: “GCMS X 1/30/02 A 2/26/02”

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NYC 9/11 Public Portal Document

Library Search Compound Report

Data File : C:\MSDCHEM\1\5973N\02FEB26\02016.D Vial: 4 Acq On : 26 Feb 2002 12:49 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 26, 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 ISOBUTYRALDEHYDE, DIMETHYLA... Concentration Rank 7

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

3.94 0.07 ug/L 36809 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual

I ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H1402 000000-00-0 83 2 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 74 3 Propane, 1,1-dimethoxy-2-methyl- 118 C6H14O2 041632-89-7 74 4 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 9 Abundance Scan 50 (3.938 min): 02016. D (-) m/ z 75.00 100.00% 75

5000 87 55 -1 1 i 1 '' 1 i ■ 1 ■r i 1 1 1 1 i 71 3.60 3.80 4.00 4.20 "i11111111111'" i11111'1111'11111 115,, ‘ > i ■ ■ ■ • । ■ 11 ■ ■ ■ m/ z 87.00 44.82% 01 " i " " i' " r ' " i11 m/z-> 5 10 15 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 3.80 4.00 4.20 55 m/z 55.00 31.17% 59 29 41 47 71 01 PPIPTTTTTTTTT 1 -H —PTPPTT । ■ ■ ■ ■ i ■ ■ m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17848: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75 . A i 1 > 1 1 । 'ii ' । 3.60 3.80 4.00 4.20 5000 m/z 47.10 12.84% 87 15 55 27 31 01 11111 L 11’3 TTHTTTT —TTT 59 71 m/z- > 5 10 15 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 ' 1 I ' 1 ' ' I 4.20 m/ Z 45.10 10.63%

5000 87 55 , 47 m/z-> 31 01 111r ■ " i " " r " ■ i ■ " ■ i' " 5 . 13,1. 1 59 71 " i" ■ n -" ■ 11 ■■ ■ 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 —m r " ‘ i" 3.60 ■ • i ■ ■ ■ l i ■ ■ ■ ■ i • । 3.80 4.00 4.20 ।

02016.D HP022102.M Wed Feb 27 08:34:32 2002 Page 5

NYC-WTC_000004533

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NYC-WTC_000004533Source: NYC Law Department, mirrored locally

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DEP GCMS data table, Jan-Feb 2002 · Box DEP Box 12

NYC-WTC_000004935

Multi-page laboratory data sheet containing sample analysis results and metadata for DEP GCMS records from January to February 2002.

3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.999