GCMS blank analysis results, May 22, 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File C : \MSDCHEM\ 1\DATA\0 5210 2\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 5 2-Butenal, 3-methyl- Concentration Rank 15

R.T. EstConc Area Relative to ISTD R.T. 3.85 0.44 ug/L 343132 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 2-Butenal, 3-methyl- 84 C5H80 000107-86-8/5 2 Formamide, N-(cyanomethyl)- 84 C3H4N20 005018-27-9 5 3 Krypton 84 Kr 007439-90-9 4 4 Dicyandiamide 84 C2H4N4 000461-58/5 4 Abundance Scan 131 (3.849 min): LB.D (-129) (-) m/z 84.00 100.00% 84

5000 38 51

42 87 3.60 3.80 4.00 4.20 0 1 ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i • ■ ■ ■ i • H l ‘ ■ i ■ ■ ■' i • ■ ■ ■ i ■ ■ ■ • i ■ ■ • ■ i ■ ■ ■ ■ i ■ I'''1111 " i1 m/z 38.10 36.94% miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #33657: 2-Butenal, 3-methyl- / 84 M 55 41 .. 5000 1II 29 3.60 3.80 4.00 4.20 m/z 51.10 31.61% 38 , 44 51 _/

miz-> 26 Of PP TT i. ■! ■ 11 | 1111 ... l-[ It I I 20 25 30 35 40 45 50 55 60 65 - 70 75 80 85 ■ । ■ ■ ■ ■ । ■ 159...65.577 —mmmmp 90 95 Abundance #541: Formamide, N-(cyanomethyl)- 29

84 3.60 3.80 4.00 4.20 55 m/z 49.10 30.32% 5000

40 43

niz-> Ot 444+ ‘ ■ i • ■1 ■ i ■1 58 61 66 - 1Hmmmpt TTFri Ip +t 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #33829: Krypton 1 1 1 1 I ' 1 1 1 1 1 r 1 ■ i ‘ ■ i ■ 1 1 84 3,60 3.80 4.00 4.20 m/z 82.00 27.10% 5000

42 80 0 1mmmemmpe ’111111017111T/TT10t1TT"I1’ '‘ i ■ ■"J1 miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.60 3.80 4.00 4.20

LB.D 052202 .M Wed May 22 12:03:12 2002 Page 8

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