Name Formula k Quantion I.S. CAS #
AMU AMU
Chloromethane CH3Cl a 0.08 50 50 74-87-3
Vinyl Chloride CH2=CHCl a 0.11 62 50 75-01-4
Bromomethane CH3Br b 0.17 96 9 74-83-9
Chloroethane CH3CH2Cl b 0.19 64 69 75-00-3
Acetone CH3COCH3 0.27    43,58 50 67-64-1
1,1-Dichloroethylene CCl2=CH2 c 0.37 98 99 75-35-4
Methylene Chloride CH2Cl2 c 0.39 86 99 75-09-2
Carbon Disulfide CS2 0.46 76 69 75-15-0
trans-1,2-Dichloroethylene CClH=CHCl 0.51 96 69 540-59-0
1,1-Dichloroethane CHCl2CH3 d 0.57 65 69 75-34-3
Vinyl Acetate CH3COOC(H)CH2 d 0.57    43,86 50 108-05-4
2-Butanone CH3COCH2CH3 0.63    43,58 69 78-93-3
cis-1,2-Dichloroethylene CClH=CClH 0.73 96 99 540-59-0
Chloroform CHCl3 0.78 83 69 67-66-3
1,3,5Tris(trifluoromethyl)benzene C6H3(CF3)3 e 0.96    Note 1 729-81-7
1,2-Dichloroethane CClH2CClH2 e 0.98 64 69 107-06-2
1,1,1-Trichloroethane CCl3CH3 1.07 97 99 71-55-6
Benzene C6H6 1.22 78 69 71-43-2
Carbon Tetrachloride CCl4 1.26 117 125 56-23-5
1,2-Dichloropropane CH2ClCHClCH3 1.51 63 69 78-87-5
Bromodichloromethane BrCl2CH f 1.59 83 69 75-27-4
Trichloroethene ClCH=CCl2 f 1.61 130 99 79-01-6
cis-1,3-Dichloropropene CClH=CCClH2(H) g 2.08 75 69 542-75-6
4-Methyl-2-Pentanone CH3COCH2CH(CH3)CH3 g 2.11    43,58 69 108-10-1
trans-1,3-Dichloropropene CClH=C(H)CClH2 2.44 75 69 542-75-6
1,1,2-Trichloroethane CHCl2CH2Cl 2.56 97 99 79-00-5
Toluene C6H5CH3 2.8 91 79 108-88-3
2-Hexanone CH3CO(CH2)3CH3 h 3.08      43,58 79 591-78-6
Dibromochloromethane Br2ClCH h 3.16 127 117 124-48-1
Tetrachloroethylene Cl2C=CCl2 4.02 129 167 127-18-4
Chlorobenzene C6H5Cl 5.07 122 117 108-90-7
Bromopentafluorobenzene C6BrF5 5.59    Note 2 344-4-7
Ethyl Benzene CH3CH2C6H5 5.91 91 79 100-41-4
Bromoform CHBr3 i 6.24 173 167 75-25-2
m-Xylene C6H4(CH3)2 i 6.35 106 117 1330-20-7
p-Xylene C6H4(CH3)2 i 6.35 106 117 1330-20-7
Styrene C6H5CH=CH2 7.25 104 117 100-42-5
o-Xylene C6H4(CH3)2 j 7.52 91 79 1330-20-7
1,1,2,2-Tetrachloroethane CHCl2CHCl2 j 7.52 83 79 79-34-5
Internal Standards Note 1: 69, 75, 99, 125
Note 2: 79, 117, 167