Odor - The Electronic Nose Artificial Olfaction Technology - page 108

Odor threshold value of common odorants

mg m -3 mg m -3 Compound ppm Compound ppm

Acetic acid 0.043 0.016 2-Hydroxyethyl acetate 0.527 0.114

Acetic anhydride 0.0013 0.00029 Light fuel oil 0.053 Acetone

13.9 4.58 3- Methylbutanal 0.0016 0.0004

Acrylic acid 0.0013 0.0004 2-Methyl-1-butanol 0.16 0.041

Amyl acetate 0.95 0.163 Methyldithiomethane 0.0011 0.00026

iso Amyl acetate 0.022 0.0038 2-Methyl 5-ethyl pyridine 0.032 0.006

Benzene 32.5 8.65 Methyl methacrylate 0.38 0.085

1,3-Butadiene 1.1 0.455 3-Methoxybutyl acetate 0.044 0.007

1-Butanol 0.09 0.03 1-Methoxypropan-2-ol 0.0122 0.003

2-Butanol 3.3 1 1-Methoxy-2-propylacetate 0.0075 0.0014

2-Butanone (MEK) 0.87 0.27 2-Methyl-l-pentanol 0.096 0.021

Butoxybutane 0.03 0.005 2-Methyl pentaldehyde 0.09 0.02

2-Butoxyethanol 0.0051 0.00097 4-Methyl-2-pentanone

(MIBK)

0.54 0.121

2-Butoxyethyl acetate 0.045 0.0063 2-Methyl-2-propanol 71 21.46

Butoxypropanol 0.191 0.0324 a-Methyl styrene 0.021 0.003

Butyl acetate 0.047 0.0066 1-Nitropropane 28.2 7.09

2- (2-Butoxyethocy)etha
nol

0.0092 0.0013 1-Octene 0.33 0.066

2,2-butoxyethoxyethyl
acetate

0.015 0.0016 2-Octene 0.5 0.1

Carbon tetrachloride 280 40.73 2-Octyne 0.03 0.006

Carbon sulfide 0.0275 0.0102 2,4-Pentanedione 0.045 0.01

m-Cresol 0.0013 0.0003 1-Pentanol 0.02 0.0051

o-Cresol 0.0028 0.0005 Petroleum naphtha 0.2

p-Cresol 0.0029 0.0006 Phenyl ether 0.0021 0.0003

Cyclohexane 315 83.8 2-Picoline 0.014 0.0034

Cyclohexanone 0.083 0.019 Propanal 0.014 0.0054

Dichloromethane 3.42 0.912 2-Propanol 1.185 0.442

Diesel 0.06 2-Propen-1-ol 1.2 0.47

Dimethyl adipate 7.101 0.913 iso Propylamine 0.158 0.06

Dimethyl glutarate 1.212 0.169 Propylbenzene 0.048 0.009

Dimethyl succinate 0.992 0.152 Propylene-n-butylether 0.206 0.01

1,4-Dioxane 30.6 7.78 Propyl ether 0.024 0.0053

1,3-Dioxolane 56.3 17.02 Styrene 0.16 0.0344

Diphenylmethane 0.41 0.55 1,1,2,2-Tetrachloroethane 1.6 0.21

Ethoxypropanol 0.161 0.035 Toluene 0.644 0.16

Ethoxypropyl acetate 0.0052 0.0008 Trichloroethylene 8 1.36

Ethyl acetate 2.41 0.61 Trimethylamine 0.0026 0.001

Ethyl alcohol 0.28 0.136 Xylene (mixed) 0.078 0.016

2-Ethyl-l-butanol 0.07 0.015 2,3 Xylenol 0.0037 0.0007

2-Ethyl-l-hexanol 0.5 0.086 2,4 Xylenol 0.064 0.0117

(continued)