GCMS blank analysis results for May 2002

NYC 9/11 Public Portal Document X DCL 11 w—Ui. ASDU —

Data File C:\MSDCHEM\1\DATA\050902\0508LB.D Vial: 4 Acq On 9 May 2002 5:43 pm Operator: Mclean Sample 5/8 kb Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e

Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 16 Cyclononasiloxane, octadeca... Concentration Rank 4 R.T. EstConc Area Relative to ISTD R.T. 37.78 1.46 ug/L 943440 Perylene-dl2 34.70 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Cyclononasiloxane, octadecamethyl- 666 C18H5409Si9 000556-71-8 64 2 l,l,l,5,7,7,7-Heptamethyl-3,3-bi... 444 C13H40O5Si6 038147-00-1 45 3 Mercaptoacetic acid, bis(trimeth... 236 C8H20O2SSi2 006398-62-5 38 4 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-0 38 Abundance Scan 5906 (37.780 min): 0508LB.D (-5896) (-) m/z 73.10 100.00%! 73 147 221

5000 281 355 429 191. , 1 503 37.40 37.60 37.80 38.00 38.20 40 o1 TTur — ------------ m/z 221.10 77.56% m/z- > 0 50 100 150 200 250 300 350 400 450 500 550 600 650 Abundance #115158: Cyclononasiloxane, octadecamethyl- 73 147 221 429

355 5000 281 ■ i ■ ■ 1 i ■ ■ ■ ■ i ■

37.40 37.60 37.80 38.00 38.20 rn/z 147.10 77.03% 475 ■ 1-1 _ ) _ 651 Tl/Z—> O—0r 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 TII 147 37.40 37.60 37.80 38.00 38.20 5000 267 m/z 207.00 39.41% 355 429

Tl/Z-> 0- 0 50 ! 207

.... - 100 150 200 250 300 350 400 450 500 550 600 650 Wswuau Abundance #26922: Mercaptoacetic acid, bis(trimethylsilyl)- 73 37.40 37.60 37.80 38.00 3820 147 m/Z 355.10 36.74%! 5000-

221

0 13 43 T+-44+ 1TT •-104 17 ■ 1 i ' ■ ■ ' i ■ m/z-> 0 50 100 150 200 250 300 350 400 450 500 550 600 650 37.40 37.60 37.80 38.00 38.20

0508LB.D 050102.M Tue May 14 10:15:01 2002 Page 19

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