GCMS blank analysis results, May 22, 2002

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 2 Crotonic acid Concentration Rank 6 R.T. EstConc Area Relative to ISTD R.T.

3.71 1.10 ug/L 859037 1,4-Dichlorobenzene-d4 9.90

Hit# of 5 Tentative ID MW MolForm CAS# Qu.

1 Crotonic acid 86 C4H602 003724-65-0 /9 2 Methylene Chloride 84 CH2C12 000075-09-2 5 3 Azetidine, 1-nitroso- 86 C3H6N20 015216-10-YL 5 4 l-Buten-3-yne, 2-chloro- 86 C4H3C1 017712-36/6 5 Abundance Scan 108 (3.714 min): LB.D (-105) (-) m/z 49.10 100.00% 40 86

5000

‘ ‘ ' I ' ' ■ ‘ I ‘ ‘ ' I ' ' 1 1 I ' ' • ‘ I 82

niz-> 3538 42 01mpmTTTTTTTHT J i 58 " i “1 ■ i" ' ‘ i “ "i1"' i ■ 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 "I-T m/z 3.40 3.60 86.00 3.80 4.00 88.52% Abundance #116766: Crotonic acid 41 85

5000 1 ■ ■ i ■ • ■ ■ i ■ ■ ■ ' i ■ ■ ■ ■ i ' ■ ■ ■ i 69 3.40 3.60 3.80 4.00 27 38 45 m/z 47.05 38.21% 15

niz-> Abundance 5 Of —134,18,,24113134. ।11 " । 5053 5760 66 ■! ■ ■ I-1 'I । 'I 10 15 20 25 30 35 40 45 50 K 60 65 70 75 80 85 90 #111040: Methylene Chloride i ■■ 72...... . - io/Mt 40 84

w 3.40 3.60 3.80 4.00 5000 m/z 51.10 38.01% 35 14 88 2528 32 ,38441 miz-> Of “I"11! THpH P| 52 70 IIT 4 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 p-rrrp-rrrj- I “ “I

Abundance #734: Azetidine, 1-nitroso- 33 3.40 3.60 3.80 4.00 m/z 88.00 22.56% 5000 41

44 55 86 Mswhi,/M“ut,e 52 . 69 1 3 m/z—> 0- “II—00‘I"OIBman TH+4 RHH 1 “I ■ ■■ ■ | ■> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.40 3.60 3.80 4.00

LB.D 052202.M Wed May 22 12:03:12 2002 Page 5

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