Gas or Vapour
to be Measured
Chemical Formula
Gastec Tube
No. & Name
Measuring
Range
(ppm)
No.of
Pump
Strokes
Shelf
Life
(year)
Note TLV-
TWA,C
(ACGIH)
(ppm)
Enflurane(2-Chloro-1,1,2-Trifluoroethyl Difluoromethyl Ether)
CHClFCH2OCHF2
51 Fluorochlorocarbons
(Pyrotectube)
20-1200 1 3 +  
51L Fluorochlorocarbons
(Pyrotectube)
25-145 2 3 +
Epichlorohydrin
CH2OCHCH2Cl
163L Ethylene oxide 1.2-120 2 1* +T 2
1,2-Epoxypropane See Propylene oxide
Ethanethiol See Ethyl mercaptan
Ethanol
C2H5OH
112 Ethanol 2.5-7.5% 1/2 3 T 1000
0.05-2.5% 1
0.01-0.05% 2
112L Ethanol 100-2000 1 3 T
50-100 2
Ethyl alcohol See Ethanol
Ethanolamine
H2NCH2CH2OH
180 Amines 7-140 3 3 T 3
180L Amines 1.95-39 1 2 T
Ethyl acetate
CH3CO2C2H5
141 Ethyl acetate 0.1-1.5% 1 3 T 400
141L Ethyl acetate 25-800 2 2 T
Ethyl acrylate
CH2:CHCO2C2H5
141L Ethyl acetate 10-160 3 2 T 5
Ethylamine
C2H5NH2
180 Amines 5-100 1 3 T 5
180L Amines 0.45-9 1 2 T
Ethyl benzene
C6H5C2H5
122 Toluene 11-330 1 3 - 100
122L Toluene 1-70 2 3 -
p-Ethyl benzylchloride
C6H4(C2H5)CH2Cl
131La Vinyl chloride 2.5-50 2 2* + -
Ethyl bromide
C2H5Br
136L Methyl bromide 100-200 1/2 2 + 5
10-100 1
2.5-10 4
Ethyl chloroformate
ClCO2C2H5
131La Vinyl chloride 7-140 2 2* + -
Ethyl chloride
C2H5Cl
138 Methylene chloride 15-150 1 3 +T 100
Ethylene
CH2:CH2
172 Ethylene 800-1680 1/2 3 - 200
25-800 1
172L Ethylene 50-100 2 3 -
0.2-50 4
103 Hydrocarbons
(Lower Class)
8.4-16.8% 1/2 2 ++
0.1-8.4% 1
0.35-0.7% 2
171 Acetylene 0.1-2% 1 3 T
Ethylene chlorohydrin
ClCH2CH2OH
111L Methanol 20-200 3 3 T C 1
Ethylenediamine
H2NCH2CH2NH2
180 Amines 14-280 1 3 T 10
180L Amines 0.9-18 1 2 T
Ethylene dibromide
BrCH2CH2Br
136H Methyl bromide 14-210 1 3 + 2
136L Methyl bromide 8-80 1 2 +
Ethylene dichloride
ClCH2CH2Cl
135 Methyl chloroform 400-2000 1 3 +T 10
135L Methyl chloroform 104-1040 1 2 +T
Ethylene glycol
HOCH2CH2OH
165L Ethylene glycol 10-100
mg/m3
2 3* + C 100
mg/m3
Ethylene glycol monobutyl ether
CH3(CH2)3OCH2CH2OH
113L Isopropyl alcohol 30-1000 2 3 T 20
113LL Isopropyl alcohol 23-230 2 2 T
Ethylene glycol monoethyl ether
C2H5OCH2CH2OH
113L Isopropyl alcohol 62.5-1000 2 3 T 5
113LL Isopropyl alcohol 15.2-152 2 2 T
Ethylene glycol monoethyl ether acetate
CH3CO2CH2CH2OC2H5
113L Isopropyl alcohol 6-96 3 3 T 5
Ethylene glycol monomethyl ether
CH3OCH2CH2OH
113L Isopropyl alcohol 15-900 2 3 T 0.1
113LL Isopropyl alcohol 20-200 2 2 T
Ethylene glycol monomethyl ether acetate See Methoxyethyl acetate
Ethylene oxide
C2H4O
163 Ethylene oxide 0.05-3% 1 3 - 1
163L Ethylene oxide 100-350 1 1* +T
1-100 2
0.4-1 4
163LL Ethylene oxide 5-10 2 1* +T
0.1-5 4
Ethyl ether
(C2H5)2O
161 Ethyl ether 0.04-1% 1 3 T 400
161L Ethyl ether 400-1200 1 2 T
10-400 2
Ethylidene chloride See 1,1-Dichloroethane
Ethyl mercaptan
C2H5SH
72 Ethyl mercaptan 5-120 1 3 T 0.5
0.5-5 2-10
72L Ethyl mercaptan 30-75 1/2 2 T
0.5-30 1
0.2-0.5 2
70 Mercaptans 5-120 1 3 T
0.5-5 2-10
70L Mercaptans 4-8 1/2 2 -
0.5-4 1
0.2-0.5 2
0.1-0.5 4
71H Methyl mercaptan 100-3800 1 3 -
N-Ethyl morpholine
C6H13NO
180 Amines 5-100 1 3 T 5
180L Amines 0.3-6 1 2 T
T:Temp Correction H:Humidity Correction *:Refrigerator Store Mesh:Correction Factor/Chart


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