Carson Ph., Mumford C. Hazardous Chemicals Handbook (Справочник по опасным химическим веществам)

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(1)

Two concentration ranges are given for most substances. The low range is approximately 1%–15% of the TLV and the high range 15%–200% TLV. The user should

select from these two ranges the expected mean concentration.

(2)

A sampling rate is recommended for each concentration range and for a 2 hr, 4 hr, or 8 hr sampling period. Each sampling rate is given in ml/min and has been

calculated to provide a minimum tube loading of at least 0.01 mg at the minimum concentration shown and not to exceed the recommended tube loading at the

highest concentration shown for that range. These figures are based on the use of 100 mg coconut-shell charcoal tubes to the NIOSH recommended design except

where otherwise noted.

(3)

A recovery of 5% of the total sample from the back-up section of charcoal in a sample tube was defined as the breakthrough point: 50% of this value is shown

as the recommended maximum tube loading, to allow for high humidity or the presence of other substances which reduce the normal tube capacity.

(4)

The figures given are not intended to be used as exact desorption efficiencies and are only given as a guide when carrying out system calibrations. Actual

desorption efficiencies should always be determined at the time of analysis. However, these figures represent the best obtainable data from several sources, and

any significant deviation should be regarded as a possible indication of a systematic error in the analytical technique. The figure given for desorption efficiency

is an average figure. The desorption efficiency for a compound will vary with the amount of substance on the tube. With reduced tube loadings, in most cases,

the desorption efficiency will be lower. Significant errors may be introduced when analysing small amounts of substance and an average desorption efficiency

factor is used.

(5)

The desorption efficiencies given are directly related to the eluent used. All data in the desorption efficiency column correspond to the specific eluent listed:

1CS

+ 1% methanol 8 Tetrahydrofuran 0.5 ml

2CS

+ 5% 2-propanol 9 Hexane 0.5 ml

3CS

+ 1% 2-propanol 10 CS

+ 5% isoamyl alcohol

4 Isopropanol 11 Formic acid

5CS

+ 1% butanol 12 Methanol

6 Methylene chloride + 5% methanol 13 Benzene

7 Ethyl acetate 0.5 ml 14 Toluene

(6)

100 mg petroleum-based charcoal tubes based on the NIOSH recommended design should be used for sample collection of these compounds.

(7)

These compounds migrate rapidly to the back-up section of the charcoal tube. A 400 mg tube should be used for sample collection with a second 100 mg tube

in series behind the large tube to determine breakthrough.

330 MONITORING TECHNIQUES

Table 10.16 Chromatographic column guide for Century organic vapour analyser

Column packing

retention time

(min:secs)

————————————————

Compound B-8 G-8 T-8

Acetone 60 0 0:37 0:27 1:50

40 0:20 0:15 0:30

Acetonitrile 70 0 0:40 0:30 5:24

40 0:20 0:18 1:15

Acrylonitrile 70 0 0:35 0:30 3:45

40 0:19 0:17 0:51

Allyl alcohol 30 0 1:15 0:44 11:45

40 0:37 0:26 1:35

Allyl chloride 50 0 0:16 0:28 0:31

40 0:08 0:16 0:15

Benzene 150 0 0:50 1:19 1:43

40 0:22 0:25 0:32

2-Bromo-2-chloro-1,1,1-trifluoroethane 45 0 0:37 0:35 0:58

(Halothane) 40 0:17 0:14 0:19

Bromoethane 75 0 0:15 0:26 0:23

40 0:05 0:15 0:14

1-Bromopropane 75 0 0:21 0:58 0:40

40 0:08 0:22 0:18

2-Butane 60 0 0:15 0:15 0:10

40 –––

-Butanol 50 0 4:10 2:20 15:07

40 0:24 0:53 1:44

2-Butanol 65 0 1:45 0:55 6:07

40 0:24 0:24 0:53

-Butyl acetate 80 0 4:15 7:30 11:40

40 0:50 1:14 1:31

-Butyl acrylate 60 0 –––

40 2:30 2:15 2:40

2-Butyl acrylate 70 0 –––

40 1:22 1:45 1:46

-Butyl formate 50 0 2:15 2:57 4:40

40 0:28 0:34 0:49

2-Butyl formate 60 0 1:22 2:00 3:31

40 0:20 0:26 0:37

-Butyl methacrylate 60 0 –––

40 4:03 5:46 5:10

2-Butyl methacrylate 80 0 –––

40 2:46 3:40 3:34

Carbon tetrachloride 10 0 0:20 1:24 0:37

40 0:10 0:25 0:17

Chlorobenzene 200 0 5:45 8:00 11:20

40 1:08 1:24 1:35

Chlorodifluoromethane (Freon 22) 40 0 0:11 0:11 0:15

40 –––

Chloroform 65 0 0:55 0:57 2:00

40 0:20 0:20 0:31

1-Chloropropane 75 0 0:16 0:31 0:23

40 0:05 0:16 0:14

2-Chloropropane 90 0 0:15 0:23 0:18

40 0:05 0:05 0:05

2-Chloro-1,1,2-trifluoroethyl difluoromethyl ether 150 0 0:36 0:26 1:22

(Ethrane) 40 0:13 0:12 0:19

Cumene 100 0 11:00 20:00 12:45

40 2:20 3:03 2:19

Relative

response

(1)

(%)

Column

temperature

(2)

(°C)

Cyclohexane 85 0 0:36 1:25 0:19

40 0:18 0:26 0:14

Cyclohexanone 100 0 18:00 12:45 –

40 3:00 2:00 –

-Decane 75 0 –––

40 2:57 6:20 1:35

-Dichlorobenzene 50 0 –––

40 8:06 10:00 11:20

Dichlorodifluoromethane (Freon 12) 15 0 0:10 0:11 0:12

40 –––

1,1-Dichloroethane 80 0 0:17 0:37 0:45

40 0:08 0:17 0:18

1,2-Dichloroethane 80 0 1:14 1:08 3:50

40 0:23 0:22 0:43

trans

1,2-Dichloroethylene 50 0 0:16 0:35 0:31

40 0:05 0:18 0:16

Dichlorofluoromethane (Freon 21) 70 0 0:16 0:15 0:23

40 –––

Dichloromethane 100 0 0:27 0:29 1:08

40 0:10 0:10 0:22

1,2-Dichloropropane 90 0 0:41 1:49 2:56

40 0:18 0:29 0:36

1,3-Dichloropropane 80 0 1:32 4:12 4:24

40 0:26 0:47 1:20

1,2-Dichloro 1,1,2,2,-tetrafluoroethane 110 0 0:12 0:12 0:14

(Freon 114) 40 –––

Diethyl ether 50 0 0:20 0:26 0:19

40 0:05 0:05 0:05

Diethyl ketone 80 0 2:00 2:01 3:16

40 0:29 0:30 0:49

-Dioxane 30 0 3:15 2:09 6:40

40 0:44 0:34 1:19

Ethane 80 0 0:15 0:15 0:15

40 –––

Ethanethiol 30 0 0:18 0:24 0:26

40 0:13 0:12 0:14

Ethanol 25 0 0:59 0:31 0:26

40 0:26 0:22 0:43

Ethyl acetate 65 0 0:48 1:00 2:20

40 0:20 0:20 0:31

Ethyl acrylate 40 0 1:40 2:10 4:08

40 0:30 0:30 0:50

Ethyl benzene 100 0 6:10 9:31 7:44

40 1:15 1:35 1:35

Ethyl butyrate 70 0 4:34 6:22 8:00

40 0:48 1:07 1:24

Ethyl formate 40 0 0:25 0:29 1:05

40 0:16 0:17 0:20

Ethyl methacrylate 70 0 4:13 6:13 6:20

40 0:47 1:01 1:01

Ethyl propionate 65 0 1:40 2:48 4:10

40 0:25 0:35 0:50

Ethylene dibromide 50 0 5:20 4:51 15:00

40 1:00 0:55 2:43

Table 10.16 Cont’d

Column packing

retention time

(min:secs)

————————————————

Compound B-8 G-8 T-8

Relative

response

(1)

(%)

Column

temperature

(2)

(°C)

TOXIC PARTICULATES 331

332 MONITORING TECHNIQUES

Ethylene dichloride 60 0 1:07 1:08 3:45

40 0:20 0:21 0:50

Ethylene oxide 70 0 0:10 0:13 0:20

40 –––

Fluorotrichloromethane (Freon 11) 10 0 0:15 0:18 0:17

40 –––

Heptane 75 0 0:50 2:20 0:27

40 0:20 0:30 0:16

Hexane 70 0 0:23 0:50 0:20

40 0:13 0:20 0:13

Isoprene 50 0 0:10 0:23 0:20

40 0:05 0:05 0:05

Methane 100 0 0:05 0:05 0:05

40 –––

Methyl alcohol 12 0 0:37 0:21 2:23

40 0:22 0:14 0:45

Methyl acetate 41 0 0:30 0:30 1:30

40 0:17 0:15 0:24

Methyl acrylate 40 0 0:50 0:58 2:30

40 0:20 0:21 0:37

Methyl cyclohexane 100 0 0:54 2:37 0:25

40 0:18 0:33 0:17

Methyl cyclopentane 80 0 0:22 1:02 0:17

40 0:05 0:19 0:05

Methyl ethyl ketone 80 0 1:00 0:50 3:30

40 0:22 0:20 0:43

Methyl isobutyl ketone 80 0 4:20 3:15 7:30

40 0:42 0:40 1:25

Methyl methacrylate 50 0 1:41 2:22 4:08

40 0:27 0:31 0:55

Methyl propyl ketone 70 0 2:20 2:05 6:14

40 0:33 0:32 0:52

Nitromethane 35 0 0:51 0:40 3:00

40 0:25 0:19 1:31

1-Nitropropane 60 0 4:50 2:50 25:00

40 0:46 0:41 4:05

2-Nitropropane 70 0 2:53 1:51 10:00

40 0:35 0:31 1:52

Nonane 90 0 7:26 8:00 2:32

40 1:08 2:40 0:42

Octane 80 0 2:47 7:39 1:07

40 0:39 1:09 0:27

Pentane 65 0 0:18 0:25 0:14

40 0:12 0:12 0:12

Pentanol 40 0 12:00 6:00 20:00

40 2:44 1:17 3:36

Propane 80 0 0:05 0:11 0:05

40 –––

-Propanol 40 0 2:50 1:00 6:30

40 0:35 0:30 1:05

2-Propanol 65 0 1:13 0:30 3:43

40 0:25 0:20 0:38

-Propyl acetate 75 0 2:04 2:52 5:52

40 0:30 0:38 0:51

Table 10.16 Cont’d

Column packing

retention time

(min:secs)

————————————————

Compound B-8 G-8 T-8

Relative

response

(1)

(%)

Column

temperature

(2)

(°C)

-Propyl ether 65 0 1:37 2:06 1:15

40 0:43 0:29 0:18

-Propyl formate 50 0 0:46 1:07 2:10

40 0:17 0:18 0:27

Pyridine 128 0 8:00 4:15 –

40 – 1:26 –

Styrene 85 0 20:00 25:00 28:00

40 2:06 2:26 2:39

1,1,1,2-Tetrachloroethane 100 0 8:25 7:48 10:00

40 1:16 1:27 1:37

1,1,2,2-Tetrachloroethane 100 0 32:00 14:00 50:00

40 4:09 2:37 7:51

Tetrachloroethylene 70 0 3:00 5:45 2:10

40 0:41 1:06 0:33

Tetrahydrofuran 40 0 1:05 1:05 1:45

40 0:23 0:23 0:30

Toluene 110 0 2:30 4:05 4:30

40 0:38 0:47 0:53

1,1,1-Trichloroethane 105 0 0:31 1:10 0:47

40 0:15 0:23 0:20

1,1,2-Trichloroethane 85 0 5:13 3:43 15:00

40 0:40 0:45 2:30

Trichloroethylene 70 0 1:17 2:02 1:25

40 0:23 0:28 0:28

Trichlorotrifluoroethane (Freon 113) 80 0 0:15 0:30 0:16

40 0:13 0:14 0:13

Triethylamine 70 0 – 2:49 –

40 –––

Vinyl acetate 50 0 0:34 0:43 1:55

40 0:15 0:17 0:30

Vinylidene chloride 40 0 0:20 0:25 0:22

40 0:13 0:14 0:14

-Xylene 111 0 2:39 12:03 8:31

40 0:39 1:43 1:17

-Xylene 116 0 3:29 15:07 8:40

40 0:48 1:58 1:45

-Xylene 116 0 2:46 12:25 8:23

40 0:39 1:42 1:19

B 3% Diisodecyl phthalate on Chromosorb W, AW, 60/80 mesh

G 10% SP – 2100 on Supelcoport, 60/80 mesh

T 10% 1,2,3-Tris(2-cyanoethoxy) propane on Chromosorb P, AW, 60/80 mesh

(1)

Century organic vapour analysers are factory calibrated to measure ‘total organic’ vapours according to a standard

(methane). Since different organic vapours interact with the flame ionization detector (FlD) to varying extents, it is vital

that the instrument user be aware of the magnitude of the variation in order to obtain the most accurate data. Each user

must determine relative responses for the individual instrument.

(2)

For chromatographic work, the OVA can be used with a variety of column lengths and packing materials. For highest

accuracy, temperature control for the column is mandatory. This is accomplished using the portable isothermal pack (PlP)

kit which is supplied with three 8 in (203 mm) columns packed with B, G and T materials respectively. Isothermal control

is accomplished non-electrically using an ice-water mixture for 0°C and a seeded eutectic mixture for 40°C. The data

listed are for comparison purposes only since retention time for a compound can vary according to the condition of the

column packing material, packing procedure and chemical interaction among the components of a vapour mix.

A blank in the table indicates that no data are available for the analysis.

TOXIC PARTICULATES 333

Table 10.16 Cont’d

Column packing

retention time

(min:secs)

————————————————

Compound B-8 G-8 T-8

Relative

response

(1)

(%)

Column

temperature

(2)

(°C)

Table 10.17 Compounds detectable by portable infrared analysis (MIRAN 1A)

Compound Analytical Path length

(m)

(2)

Absorbence

(3)

Minimum Detectable

Wavelength

(µm)

(1)

Concentration

(ppm)

(4)

(20 metre cell)

Acetaldehyde 9.0 20.25 0.23 0.8

Acetic acid 8.5 20.25 0.044 0.1

Acetic anhydride 8.9 20.25 0.18 0.02

Acetone 8.2 2.25 0.49 0.09

Acetonitrile 9.6 20.25 0.005 5.0

Acetophenone 7.9 20.25 0.5 0.7

Acetylene 3.03 6.75 0.19 0.4

Acetylene dichloride,

see

1,2-Dichloroethylene

Acetylene tetrabromide 8.85 20.25 0.0047 0.1

Acrolein 8.6 20.25 0.0002 0.3

Acrylonitrile 10.5 20.25 0.005 0.2

Allyl alcohol 9.8 20.25 0.0055 0.3

Allyl chloride 10.8 20.25 0.0032 0.2

Allylglycidylether 9.1 20.25 0.08 0.07

2-Aminoethanol,

see

Ethanolamine

Ammonia 10.4 20.25 0.14 0.2

-Amyl acetate 8.0 0.75 0.12 0.02

Aniline 9.3 20.25 0.011 0.3

Arsine 4.66 20.25 0.0003 0.1

Arylam,

see

Carbaryl

Benzene 14.87 20.25 0.08 0.3

-Benzoquinone,

see

Quinone

Benzyl chloride 7.9 20.25 0.0012 0.4

Bisphenol A,

see

Diglycidyl ether

Bis(chloromethyl) ether 8.99 20.25 0.0016 0.2

Boron trifluoride 6.8 20.25 0.006 0.5

Bromoform 8.7 20.25 0.005 0.05

Butadiene, (1,3-butadiene) 11.0 2.25 0.46 0.2

Butane 10.36 20.25 0.03 3.0

Butanethiol,

see

Butyl mercaptan

2-Butanone (MEK) 8.5 20.25 0.55 0.15

2-Butoxyethanol (butyl cellosolve) 8.9 9.75 0.2 0.08

Butyl acetate (

-butyl acetate) 8.1 3.75 0.53 0.02

sec-Butyl acetate 9.9 9.75 0.48 0.15

tert-Butyl acetate 9.9 9.75 0.36 0.2

-Butyl alcohol 9.6 8.25 0.15 0.17

sec-Butyl alcohol 10.1 9.75 0.15 0.35

tert-Butyl alcohol 8.2 20.75 0.47 0.05

Butylamine 13.0 20.25 0.025 0.3

Butyl ether 8.85 20.25 0.5 0.04

Butyl carbitol 8.9 20.25 0.32 0.08

-Butyl glycidyl ether 8.9 20.25 0.55 0.05

Butyl mercaptan 3.37 20.25 0.04 0.08

-tert-Butyltoluene 12.3 20.25 0.015 0.8

Carbon disulphide 4.54 20.25 0.015 0.5

Carbon dioxide 4.25 0.75 1.2 0.05

Carbon monoxide 4.61 20.25 0.045 0.2

Carbon tetrachloride 12.6 20.25 0.31 0.06

Carbonyl sulphide 4.85 20.25 0.5 0.02

Carbary

(5)

Chlorinated camphene

(5)

Chlorobenzene (monochlorobenzene) 9.2 20.25 0.26 0.2

Chlorobromomethane 8.1 9.75 0.29 0.2

2-Chloro-1,3-butadiene,

see

Chloroprene

Chlorodifluoromethane (Freon 22) 9.0 5.25 0.17 0.02

1-Chloro-2,3,-Epoxypropane,

see

Epichlorohydrin

2-Chloroethanol,

see

Ethylene chlorohydrin

Chloroethylene,

see

Vinyl chloride

Chloroform (trichloromethane) 13.0 5.25 0.45 0.06

1-Chloro-1-nitropropane 12.4 20.25 0.04 1.0

Chloropentafluoroethane (Genetron 115) 8.1 5.25 0.7 0.02

Chloropicrin (trichloronitromethane) 11.5 20.25 0.002 0.05

Chloroprene (2-chloro-1,3-butadiene) 11.4 20.25 0.08 0.4

Chlorotrifluoroethylene 9.24 20.25 0.04 0.06

Cresol (all isomers) 8.6 20.25 0.0066 0.3

Crotonaldehyde (trans-2-butenal) 8.7 20.25 0.01 0.1

Cumene (isopropyl benzene) 9.75 20.25 0.031 0.7

Cyanogen 4.7 20.25 0.016 3.0

Cyclohexane 3.4 2.25 0.56 0.03

Cyclohexanol 9.3 20.25 0.28 0.10

Cyclohexanone 8.3 20.25 0.054 0.5

Cyclohexene 8.8 20.25 0.12 0.3

Deuterium oxide 3.68 20.25 0.067 1.0

DDVP, see Dichlorvos

Diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) 8.5 20.25 0.335 0.08

1,2-Diaminoethane,

see

Ethylenediamine

Diborane 3.9 20.25 0.0005 0.1

Dibromochloropropane 8.27 20.25 0.19 0.2

1,2-Dibromotetrafluoroethane 8.45 20.25 0.7 0.02

-Dichlorobenzene 13.4 20.25 0.213 0.4

-Dichlorobenzene 9.1 9.75 0.47 0.06

Dichlorodifluoromethane (Freon 12) 9.1 0.75 1.2 0.02

1,1-Dichloroethane 9.4 9.75 0.15 0.3

1,2-Dichloroethylene 12.1 0.75 0.1 0.07

Dichloroethyl ether 8.85 20.25 0.13 0.06

Dichloromethane,

see

Methylene chloride

Dichloromonofluoromethane (Freon 21) 9.3 0.75 0.42 0.08

1,1-Dichloro-1-nitroethane 9.1 20.25 0.1 0.07

1,2-Dichloropropane,

see

Propylene dichloride

Dichlorotetrafluoroethane (Freon 114) 8.4 0.75 1.43 0.02

Dichlorvos DDVP 9.4 20.25 0.0014 0.02

Diethylamine 8.8 20.25 0.1 0.2

Diethylamino ethanol 9.4 20.25 0.08 0.1

Diethylether,

see

Ethyl ether

Diethyl ketone 9.0 20.25 0.2 0.1

Diethyl malonate 9.5 20.25 0.11 0.05

Difluorodibromomethane 9.2 2.25 0.36 0.02

Diglycidyl ether

(6)

Dihydroxybenzene,

see

Hydroquinone

Diisobutyl ketone 8.6 20.25 0.12 0.2

Diisopropylamine 8.5 20.25 0.026 0.1

1,2-Dimethoxyethane 8.8 5.25 0.3 0.1

Dimethoxymethane,

see

Methylal

-Dimethylacetamide 9.9 20.25 0.02 0.3

Dimethylamine 8.7 20.25 0.02 0.5

Dimethylaminobenzene,

see

Xylidene

Dimethylaniline (N, N dimethyl aniline) 8.6 20.25 0.015 0.2

Dimethylbenzene,

see

Xylene

Dimethylformamide 9.2 20.25 0.063 0.1

2,6-Dimethylheptanone,

see

Diisobutyl ketone

Dimethylsulphate 9.9 20.25 0.04 0.02

Dimethyl sulphoxide 9.0 20.25 0.5 0.2

Dioxane (diethylene dioxide) 8.9 5.25 0.38 0.05

Diphenylmethane diisocyanate,

see

Methylene

bisphenyl isocyanate, MDl

Enflurane 8.7 20.25 0.10 0.01

Epichlorohydrin 11.8 20.25 0.013 0.3

1,2-Epoxypropane,

see

Propylene oxide

2,3-Epoxy-1-propanol,

see

Glycidol

Ethanethiol,

see

Ethyl mercaptan

Ethane 12.1 20.25 0.15 3.0

Ethanolamine 13.0 20.25 0.0017 1.2

2-Ethoxyethanol (cellosolve) 8.9 2.25 0.24 0.06

Table 10.17 Cont’d

Compound Analytical Path length

(m)

(2)

Absorbence

(3)

Minimum Detectable

Wavelength

(µm)

(1)

Concentration

(ppm)

(4)

(20 metre cell)

2-Ethoxyethyl acetate (cellosolve acetate) 8.8 8.25 0.58 0.03

Ethyl acetate 8.0 0.75 0.39 0.02

Ethyl acrylate 8.4 20.25 0.33 0.04

Ethyl alcohol (ethanol) 9.5 2.25 0.5 0.2

Ethylamine 3.4 20.25 0.015 0.2

Ethyl sec-amyl ketone (5-methyl-3-heptanone) 9.0 20.25 0.04 0.3

Ethylbenzene 9.7 20.25 0.06 1.0

Ethyl bromide 8.0 5.25 0.17 0.2

Ethyl butyl ketone (3-heptanone) 9.0 20.25 0.12 0.2

Ethyl chloride 10.4 20.25 0.62 0.8

Ethyl ether 8.8 2.25 0.58 0.03

Ethyl formate 8.5 2.25 0.1 0.06

2-Ethyl hexanol 9.7 20.25 0.02 0.2

Ethyl mercaptan 3.3 20.25 0.029 0.8

Ethyl silicate 9.1 5.25 0.93 0.02

Ethylene 10.6 20.25 0.12 0.5

Ethylene chlorohydrin 9.3 20.25 0.026 0.08

Ethylenediamine 13.0 20.25 0.035 0.4

Ethylene dibromide (1,2-dibromoethane) 8.45 20.25 0.07 0.1

Ethylene dichloride (1,2-dichloroethane) 8.1 20.25 0.09 0.3

Ethylene glycol monomethyl ether acetate,

see

Methyl cellosolve acetate

Ethylene oxide 11.8 20.25 0.12 0.4

Ethylidine chloride,

see

1,1-Dichloroethane

Fluorobenzene 8.1 20.25 0.4 0.06

Fluorotrichloromethane (Freon 11) 11.9 0.75 1.7 0.01

Fluroxene 8.5 20.25 0.086 0.01

Formaldehyde 3.58 20.25 0.015 0.2

Formic acid 8.9 20.25 0.055 0.05

Furfural 13.3 20.25 0.05 0.1

Furfuryl alcohol 9.8 20.25 0.09 0.3

Glycidol (2,3-epoxy-1-propanol) 9.9 20.25 0.020 1.3

Glycol monoethyl ether,

see

2-Ethoxyethanol

Guthion

(R)

see

Azinphosmethyl

Halothane 12.3 20.25 0.027 0.08

Heptane (

-heptane) 3.4 0.75 0.29 0.01

1-Heptanol 9.5 20.25 0.2 0.1

Hexachloroethane 12.8 20.25 0.04 0.03

Hexafluoropropene 8.3 20.25 0.16 0.06

Hexane (

-hexane) 3.4 0.75 0.26 0.02

2-Hexanone 8.6 20.25 0.42 0.1

Hexone (methyl isobutyl ketone) 8.5 20.25 0.31 0.2

sec-Hexyl acetate 9.8 9.75 0.1 0.2

Hydrazine 10.55 20.25 0.001 0.25

Hydrogen chloride 3.4 20.25 0.002 1.0

Hydrogen cyanide 3.04 20.25 0.0083 0.4

Hydroquinone

(5)

Isoamyl acetate 9.4 9.75 0.27 0.14

Isoamyl alcohol 9.4 9.75 0.22 0.13

Isobutyl acetate 8.2 2.25 0.4 0.02

Isobutyl alcohol 9.6 8.25 0.30 0.08

Isodecanol 9.6 20.25 0.25 0.3

Isoflurane 8.25 20.25 0.07 0.02

Isophorone 3.4 20.25 0.12 0.4

Isoprene 11.2 5.25 0.078 0.2

Isopropyl acetate 8.0 2.25 0.63 0.02

Isopropyl alcohol 8.7 6.75 0.45 0.12

Isopropylamine 8.5 20.25 0.025 0.1

Isopropyl ether 8.9 0.75 0.17 0.07

LPG (liquefied petroleum gas) 3.4 0.75 0.24 0.4

Mesityl oxide 8.2 20.25 0.06 0.2

Methane 7.65 20.25 0.072 0.2

Methanethiol,

see

Methyl mercaptan

Methoxyflurane 12.0 20.25 0.03 0.07

2-Methoxyethanol,

see

Methyl cellosolve

Methyl acetate 9.5 5.25 0.31 0.2

Methyl acetylene (propyne) 7.9 20.25 0.77 1.0

Methyl acrylate 8.4 20.25 0.15 0.03

Methylal (dimethoxymethane) 9.5 0.75 0.43 0.05

Methyl alcohol (methanol) 9.5 5.25 0.3 0.1

Methylamine 3.4 20.25 0.02 0.1

Methyl amyl alcohol,

see

Methyl isobutyl carbinol

Methyl

-amyl ketone (2-heptanone) 8.6 9.75 0.14 0.2

Methyl bromide 7.6 20.25 0.021 0.4

Methyl butyl ketone,

see

2-Hexanone

Methyl cellosolve 8.8 20.25 0.19 0.05

Methyl cellosolve acetate 8.0 20.25 0.39 0.02

Methyl chloride 13.4 20.25 0.14 1.5

Methyl chloroform 9.2 2.25 0.4 0.06

Methylcyclohexane 3.4 2.25 0.84 0.04

Methylcyclohexanol 9.5 20.25 0.24 0.2

-Methylcyclohexanone 8.9 20.25 0.18 0.3

Methylene bisphenyl isocyanate, MDl

(5)

Methylene chloride 13.4 0.75 0.25 0.2

Table 10.17 Cont’d

Compound Analytical Path length

(m)

(2)

Absorbence

(3)

Minimum Detectable

Wavelength

(µm)

(1)

Concentration

(ppm)

(4)

(20 metre cell)