Index of target gases/substances : D
Gas o 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)
n-Decane
CH3(CH2)8CH3		 105 Hydrocarbons
(HigherClass)		 400-6000 1 3 - -
200-400 2
Diacetone alcohol
(CH3)2C(OH)CH2COCH3		 154 Cyclohexanone 2.5-100 2 2* T 50
Diacetyl
CH3COCOCH3		 92 Acetaldehyde 25-1500 3 2* T -
1,2-Diaminoethane See Ethylenediamine
Diborane
B2H6		 22 Diborane 2-5 1 2 T 0.1
0.05-2 2
0.02-0.05 5
1,1-Dibromoethane
CH3CHBr2		 136L Methyl bromide 7-70 1 2 + -
1,2-Dibromoethane See Ethylene dibromide
Dibromomethane
CH2Br2		 136L Methyl bromide 5-50 1 2 + -
Di-n-butylamine
(CH3CH2CH2CH2)2NH		 180 Amines 5-100 1 3 T -
180L Amines 0.4-8 1 2 T
m-Dichlorobenzene
C6H4Cl2		 127 o-Dichlorobenzene 2.5-300 2 3 T -
o-Dichlorobenzene
C6H4Cl2		 127 o-Dichlorobenzene 2.5-300 2 3 T 25
p-Dichlorobenzene
C6H4Cl2		 127 o-Dichlorobenzene 2.5-300 2 3 T 10
Dichlorodifluoromethane
(R12)
CCl2F2		 51H Fluorochlorocarbons
(Pyrotectube)		 2600-7800 1/2 3 + 1000
325-2600 2
51 Fluorochlorocarbons
(Pyrotectube)		 11-440 1 3 +
51L Fluorochlorocarbons
(Pyrotectube)		 36-97 1 3 +
1.8-36 2
1,1-Dichloroethane
CH3CHCl2		 135 1,1,1-Trichloroetane 9-450 1 3 +T 100
1,2-Dichloroethane SeeEthylene dichloride
1,1-Dichloroethylene SeeVinylidene chloride
1,2-Dichloroethylene
ClCH:CHCl		 139 1,2-Dichloroethylene 100-250 1/2 2* T 200
10-100 1
5-10 2
132HA Trichloroethylene 80-800 1 2* T
132LL Trichloroethylene 0.4-6 1 2* -
1,1-Dichloro-1-fluoroethane
(R141b)
CH3CCl2F		 51 Fluorochlorocarbons
(Pyrotectube)		 400-1000 1/2 3 + -
10-400 1
51L Fluorochlorocarbons
(Pyrotectube)		 1.1-22 2 3 +
Dichloromethane See Methylene chloride
Dichloropentafluoropropane
(R225)		 51 Fluorochlorocarbons
(Pyrotectube)		 20-800 1 3 + -
51L Fluorochlorocarbons
(Pyrotectube)		 1.4-28 2 3 +
3,3-Dichloro-1,1,2,2
-pentafluoropropane
(R225ca)
CHCl2CF2CF3		 51 Fluorochlorocarbons
(Pyrotectube)		 20-800 1 3 + -
51L Fluorochlorocarbons
(Pyrotectube)		 1.4-28 2 3 +
1,2-Dichloropropane See Propylene dichloride
1,3-Dichloropropene
ClCH2CH:CHCl		 132HA Trichloroethylene 45-450 2 2* T 1
131La Vinyl chloride 0.5-10 2 2* +
1,2-Dichloro-1,1,1-tetrafluoroethane
(R114)
CClF2CClF2		 51H Fluorochlorocarbons
(Pyrotectube)		 3800-11400 1/2 3 + 1000
475-3800 1
51 Fluorochlorocarbons
(Pyrotectube)		 20-800 1 3 +
51L Fluorochlorocarbons
(Pyrotectube)		 36-97 1 3 +
1.8-36 2
2,2-Dichloro-1,1,1trifluoroethane
(R123)
CHCl2CF3
 51 Fluorochlorocarbons
(Pyrotectube)		 560-1600 1/2 3 + -
14-560 1
51L Fluorochlorocarbons
(Pyrotectube)		 1.4-28 2 3 +
Diethylamine
(C2H5)2NH		 180 Amines 5.5-110 1 3 T 5
180L Amines 0.45-9 1 2 T
Diethylaminoethanol
(C2H5)NCH2CH2OH		 180L Amines 0.6-12 1 2 T 2
Diethylbenzene
C6H4(C2H5)2		 122L Toluene 2-150 4 3 - -
Diethylenetriamine
H2NCH2CH2NHCH2CH2NH2		 180L Amines 0.95-19 1 2 T 1
Diethylethanolamine
(C2H5)2NC2H4OH		 180 Amines 6-120 1 3 T  
Diethylether See Ethyl ether
Diisobutylene
(CH3)3CCH:C(CH3)2		 121 Benzene 45-540 1 3 - -
Diisobutylketone
[(CH3)2CHCH2]2CO		 102L n-Hexane 0.2-1% 2 3 - 25
91L Formaldehyde 0.58-29 4 3* T
Diisopropyl benzene
C6H5N[CH(CH3)2]2		 141L Ethyl acetate 12-400 1/2 2 T -
Diisopropylamine
[(CH3)2CH]2NH		 180 Amines 5-100 1 3 T 5
180L Amines 0.3-6 1 2 T
N,N-Dimethyl acetamide
CH3CON(CH3)2		 184 N,N-Dimethyl acetamide 60-240 1 3 T 10
5-60 2
1.5-5 4
Dimethylamine
(CH3)2NH		 3H Ammonia 1.2-19.2% 1 3 - 5
180 Amines 5.5-110 1 3 T
180L Amines 0.45-9 1 2 T
2-Dimethylaminoethanol
(CH3)2NCH2CH2OH		 180L Amines 0.65-13 1 2 T -
Dimethylaminopropylamine
(CH3)2NCH2CH2CH2NH2		 180 Amines 8-160 1 3 T -
180L Amines 0.6-12 1 2
N,N-Dimethylaniline
C6H3(CH3)2(NH2)		 181 Aniline 2.5-30 3 3 - 5
Dimethylbenzene See Xylene
Dimethyl disulphide
(CH3)2S2		 53 Dimethyl sulphide
(Pyrotec tube)		 0.3-6 3 2 + 0.5
Dimethylethanolamine
(CH3)2NCH2CH2OH		 180 Amines 6.5-130 1 3 T -
180L Amines 0.65-13 1 2 T
N,N-Dimethylethylamine
C2H5N(CH3)2		 180 Amines 4-80 1 3 T -
180L Amines 0.3-6 1 2 T
N,N-Dimethyl formamide
HCON(CH3)2		 183 N,N-Dimethyl formamide 30-90 1/2 3 T 10
2-30 1
0.8-2 2
2,6-Dimethyl-4-heptanone See Diisobutyl ketone
Dimethylhydrazine
NH2N(CH3)2		 185 Hydrazine 0.1-2 5 3 H 0.5
Dimethylsulphide
(CH3)2S		 53 Dimethyl sulphide
(Pyrotectube)		 0.5-10 3 2 + -
0.25-0.5 5
77 TBM and DMS 1-15 mg/L 1 2* +T
1,4-Dioxane
C4H8O2		 159 Tetrahydrofuran 25-140 1 3 T 25
163 Ethyleneoxide 0.1-6% 1 3 -
Dipropylamine
(CH3CH2CH2)2NH		 180 Amines 4-80 1 3 T -
180L Amines 0.35-7 1 2 T
Divinyl benzene
C6H4(CH:CH2)2		 124L Styrene 1-15 3 3 - 10
Divinyl methoxysilane
(CH2:CH2)2CH3OSi		 113L Isopropyl alcohol 2.5-40 2 3 T -
T:Temp Correction H:Humidity Correction *:Refrigerator Store Mesh:Correction Factor/Chart


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