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GCMS blank analysis results, May 22, 2002

Machine-extracted title · confidence 95%

Laboratory report showing blank sample analysis for volatile organic compounds using gas chromatography-mass spectrometry on May 22, 2002.

NYC-WTC_000013049–000013076

Folder label: “GCMS X 5/21/02 A 5/21/02

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NYC 9/11 Public Portal Document Library Search Compound Report

Data File C:\MSDCHEM\1\DATA\052102\LB.D Vial: 10 Acq On 21 May 2002 8:40 pm Operator: Mclean Sample Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L Peak Number 15 Cyclononasiloxane, octadeca... Concentration Rank 11

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

33.20 0.77 ug/L 596078 Perylene-dl2 34.67

Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Cyclononasiloxane, octadecamethyl- 666 C18H5409Si9 000556-71-8/72 2 l,l,l,5,7,7,7-Heptamethyl-3,3-bi... 444 C13H40O5Si6 038147-00-1 59 3 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-0 32 4 Mercaptoacetic acid, bis(trimeth... 236 C8H20O2SSi2 006398-62-5 32 Abundance Scan 5127 (33.203 min): LB.D (-5119) (-) m/z 73.10 00.00% 73

147 221 5000 281 355 ------- 429

niz-> 0- 44 ,, A 4 ‘ ‘ i * ' ‘ ‘ I 1 TIr 191 —— 503 50 100 150 200 250 300 350 400 450 500 550 600 650 32.80 33.00 33.20 33.40 33.60 m/z 147.10 58.47% Abundance #115158: Cyclononasiloxane, octadecamethyl- 73 147 221 429

355 5000' 281 11r i ■ ■ ■ ■ i ■ ‘ ■ i ■ ■

32.80 33.00 33.20 33.40 33.60 m/z 221.10 57.83% — 475 1 651 — TTTT 0- ■ ■ ■ i ’ ■ ■ 111 • miz-> 50 100 150 200 250 300 350 400 - 450 500 550 600 650 Abundance #26950:1,1,1,5,7,7,7-Heptamethyl-3,3-bis(trimethylsiloxy)... 73

147 32.80 33.00 33.20 33.40 33.60 5000 267 m/z 281.00 24.28% 355 429 207

0- ■ ■ । niz-> Abundance 50 100 150 200 250 300 350 400 450 500 550 600 650 #87890: 3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5,5,7,7... 147 221 aa .*nAA.0Am* 32.80 33.00 33.20 33.40 33.60 m/z 207.00 21.70% 73 5000 191 279 pwPpouows/ hobopwnu 28. 250 | - 1 1 ir'f 1 i1 1 1 0 TITtr n/z-> 50 100 150 200 250 300 350 400 450 500 550 600 '650' 32.80 33.00 33.20 33.40 33.60

LB.D 052202.M Wed May 22 12:03:24 2002 Page 18

NYC-WTC_000013070

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NYC-WTC_000013070Source: NYC Law Department, mirrored locally

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