Asia-Pacific Centre for Environmental Law

Air Quality, Industrial Standards for Organic Substances (TCVN 5940, 1995)

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AIR QUALITY:
INDUSTRIAL EMISSION STANDARDS
ORGANIC SUBSTANCES
TCVN 5940-1995
1.    Scope

1.1    This standard specifies the maximum concentrations of organic substances in industrial emission gases (in mg/m3 of emission gas) emitted into ambient air.

In this standard, Industrial emission gas means: smoke, gas of organic substances or smokes, gases containing organic substances produced by sources of any industrial process, or by sources of any servicing or trading activity, or by other activities.

1.2    This standard is applied to control of concentration of organic substances in the industrial emission gases before being discharged into atmosphere.

2.    Limitation Values

2.1    Chemical nomenclature and formula of organic substances in industrial emission gases and maximum allowable concentrations of those emitted into the atmosphere are specified in the table 1.

2.2    The limit values of the concentration of industrial emission gases produced by particular sources (e.g. oil refinery, etc.) are specified in separate standards.

Note: Standard analysis method of concentrations of the parameters in the industrial emission gases are specified in current TCVNs.

Table 1
Maximum Allowable Concentration (MAC)
of the Organic Substances Emitted into Atmosphere
Nº Nomenclature Chemical Formula MAC
1 Acetone CH3COCH3 2400
2 Acetylene tetrabromide CHBr2CHBr2 14
3 Acetaldehyde CH3CHO 270
4 Acrolein CH2=CHCHO 1,2
5 Amyl acetate CH3COOOC5H11 525
6 Aniline C6H5NH2 19
7 Acetic anhydride (CH3CO)2O 360
8 Benzidine NH2C6H4C6H4NH2 None
9 Benzene C6H6 80
10 Chlorobenzyl C6H5CH2Cl 5
11 Butadiene C4H6 2200
12 Butane C4H10 2350
13 Butylaxetate CH3COOC4H9 950
14 n-Butanol C4H9OH 300
15 Butylamine CH3(CH2)2CH2NH2 15
16 Cresol (o-, m-, p- ) CH3C6H4OH 22
17 Chlorobenzene C6H5Cl 350
18 Chloroform CHCl3 240
19 ß-Chloroprene CH2=CClCH=CH2 90
20 Chloropicrin CCl3NO2 0,7
21 Cyclohexane C6H12 1300
22 Cyclohexanole C6H11OH 410
23 Cyclohexanone C6H10O 400
24 Cyclohexene C6H10 1350
25 Diethylamine (C2H5)2NH 75
26 Difluorodibromomethane CF2Br2 860
27 o-Dichlorobenzene C6H4Cl2 300
28 1,1-Dichloroethane CHCl2CH3 400
29 1,2-Dichloroethylene ClCH=CHCl 790
30 1,2-Dichlorodifluromethane CCl2F2 4950
31 Dioxane C4H8O2 360
32 Dimethylaniline C6H5N(CH3)2 25
33 Dichloroethyl ether (ClCH2CH2)2O 90
34 Dimethylformamide (CH3)2NOCH 60
35 Dimethyl sulfate (CH3)2SO4 0,5
36 Dimethylhydrazine (NH3)2NNH2 1
37 Dinitrobenzene (o-, m-, p- ) C6H4(NO2)2 1
38 Ethyl acetate CH3COOC2H5 1400
39 Ethyl amine CH3CH2NH2 45
40 Ethyl benzene CH3CH2C6H5 870
41 Ethyl bromide C2H5Br 890
42 Ethylene diamine NH2CH2CH2NH2 30
43 Ethylene dibromide CHBr=CHBr 190
44 Ethanol C2H5OH 1900
45 Ethyl acrylate CH2=CHCOOC2H5 100
46 Ethylene chlorohydrin CH2ClCH2OH 16
47 Ethylene oxide CH2OCH2 20
48 Ethyl ether C2H5OC2H5 1200
49 Ethyl chloride CH3CH2Cl 2600
50 Ethyl silicate (C2H5)4SiO4 850
51 Ethanol amine NH2CH2CH2OH 45
52 Furfural C4H3OCHO 20
53 Formaldehyde HCHO 6
54 Furfuryl C4H3OCH2OH 120
55 Fluorotrichloromethane CCl3F 5600
56 n-Heptane C7H16 2000
57 n-Hexane C6H14 450
58 Isopropylamine (CH3)2CHNH2 12
59 Isobutanol (CH3)2CHCH2OH 360
60 Methyl acetate CH3COOCH3 610
61 Methyl acrylate CH2=CHCOOCH3 35
62 Methanol CH3OH 260
63 Methyl acetylene CH3C=CH 1650
64 Methyl bromide CH3Br 80
65 Methyl cychlohexane CH3C6H11 2000
66 Methyl cychlohexanol CH3C6H10OH 470
67 Methyl cychlohexanone CH3C6H9O 460
68 Methyl chloride CH3Cl 210
69 Methylene cloride CH2Cl2 1750
70 Methyl chloroform CH3CCl3 2700
71 Monomethylaniline C6H5NHCH3 9
72 Methanol amine HOCH2NH2 31
73 Naphthalene C10H8 150
74 Nitrobenzene C6H5NO2 5
75 Nitroethane CH3CH2NO2 310
76 Nitroglycerin C3H5(NO2)3 5
77 Nitromethane CH3NO2 250
78 2-Nitropropane CH3CH(NO2)CH3 1800
79 Nitrotoluene NO2C6H4CH3 30
80 Octane C8H18 2850
81 Pentane C5H12 2950
82 Pentanone CH3CO(CH2)2CH3 700
83 Phenol C6H5OH 19
84 Phenyl hydrazine C6H5NHNH2 22
85 Tetrachloroethylene CCl2=CCl2 670
86 Propanol CH3CH2CH2OH 980
87 Propyl acetate CH3-COO-C3H7 840
88 Propylene dichloride CH3-CHCl-CH2Cl 350
89 Propylene oxide C3H6O 240
90 Propylene ether C3H5OC3H5 2100
91 Pyrindine C5H5N 30
92 Pyrene C16H10 15
93 Quinone C6H4O2 0,4
94 Styrene C6H5CH=CH2 420
95 Tetrahydrofural C4H8O 590
96 1,1,2,2-Tetrachloroethane Cl2HCCHCl2 35
97 Tetrachloromethane CCl4 65
98 Toluene C6H5CH3 750
99 Tetranitromethane C(NO2)4 8
100 Toluidine CH3C6H4NH2 22
101 Toluene-2,4-diisocyanate CH3C6H3(NCO)2 0,7
102 Triethylamine (C2H5)3N 100
103 1,1,2-Trichloroethane CHCl2CH2Cl 1080
104 Trichloroethylene ClCH=CCl2 110
105 Trifluorobromethane CBrF3 6100
106 Xylene (o-,m-,p- ) C6H4(CH3)2 870
107 Xylidine (CH3)2C6H3NH2 50
108 Vinyl chloride CH2=CHCl 150
109 Vinyltoluene CH2=CHC6H4CH3 480
 

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Acknowledgement: Text courtesy of NEA Policy Division, MOSTE.

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last updated 1st August 1998
Asia-Pacific Centre for Environmental Law
Faculty of Law
National University of Singapore
© 1998