Implementation guidelines for Environmental Emergency Regulations: appendix 3


List of Substances in Alphabetical Order

Background

During the development of the 2003 version of the Environmental Emergency Regulations (E2 Regulations), the list of hazardous chemicals developed by the Conseil pour la réduction des accidents industriels majeurs (CRAIM) was selected as the best starting point for the Regulations. CRAIM had prepared a list of toxic and hazardous substances based on different sources, such as MIACC’s List 1 and List 2, as well as the U.S. Environmental Protection Agency’s Risk Management Program (RMP) list. Some of the nomenclature used in the original CRAIM list was modified to match those names most commonly used, as listed under the Transportation of Dangerous Goods Act, 1992 (TDGA). The TDGA list was not adopted in its entirety for the Regulations: its threshold quantities were intended to capture smaller quantities of transported substances that were considered too small to capture at the storage and chemical facilities covered by the E2 Regulations.

At the time of the publication of the original E2 Regulations in 2003, a total of 16 substances declared toxic under CEPA 1999 were included in Schedule 1 of the Regulations. Environment Canada made a commitment to stakeholders to evaluate 49 CEPA substances before publishing amendments to the E2 Regulations. Some of these CEPA 1999 substances are “classes of substances” that include several sub-compounds; consequently, a total of 94 substances were evaluated for possible inclusion in Schedule 1 of the E2 Regulations.

Based on the results of the evaluation of these substances, 30 substances and classes of substances and their respective thresholds are being added to Schedule 1 of the 2011 version of the E2 Regulations. Further, the regulated community requested that three substances of concern (acetic acid, ammonium nitrate and styrene) be evaluated for possible addition to Schedule 1 of the E2 Regulations. Environment Canada completed its evaluation and is adding these three substances to Schedule 1. Therefore, a total of 41 substances (33 substances and classes of substances representing different forms of the core 33 substances) and their respective thresholds have been added to Schedule 1 of the E2 Regulations.

Environment Canada has developed a rationale for the inclusion of the original 174 substances listed in Schedule 1 of the E2 Regulations. The justification for the specified threshold quantities is found in Rationale for the Development of a List of Regulated Substances under CEPA Section 200 and their Threshold Quantities.

The Chemical Abstracts Service registry numbers7 (CAS registry numbers) are the main identifier for the regulated substances found in the E2 Regulations. The use of these numbers, as well as the classification of the regulated substances according to their physical properties, was necessary for greater public understanding and clear communication. The United Nations identification numbers (UN numbers) have been removed from the E2 Regulations; however, they will remain referenced in Appendix 3 of the Implementation Guidelines. Periodic review and re-evaluation of the regulated list will be undertaken by Environment Canada for a continuous enhancement of the protection of the environment and human health.

Schedule 1 of the Regulations (Section 2, subsections 3(1), (2) and (5), 4(1) and 7(1))

List of Substances

Important

In the Implementation Guidelines, Schedule 1 substances are listed in alphabetical order and UN Number is added to the list. In the E2 Regulations, Schedule 1 substances are listed in order of CAS registry number.

Part 1 - Substances Likely to Explode
  Column 1 Column 2 Column 3  
# Name of Substance CAS Registry Number Concentration (% by weight) Minimum Quantity (tonnes) UN Number
1 acetaldehyde 75-07-0 1 4.50 1089
2 acetylene 74-86-2 1 4.50 1001
3 ammonium nitrate (in liquid form) 6484-52-2 81 20.00 1942, 2067-2072, 2426
4 ammonium nitrate (in solid form) 6484-52-2 60 20.00 1942, 2067-2072, 2426
5 ammonium perchlorate 7790-98-9 1 3.40 1442
6 benzene 71-43-2 1 10.00 1114
7 bromotrifluoroethylene 598-73-2 1 4.50 2419
8 1,3-butadiene 106-99-0 1 4.50 1010
9 Butane 106-97-8 1 4.50 1011
10 1-buten-3-yne (vinyl acetylene) 689-97-4 1 4.50 no number
11 cis-2-butene (2-butene-cis) 590-18-1 1 4.50 1055
12 trans-2-butene (2-butene-trans) 624-64-6 1 4.50 1055
13 1-butene (alpha-butylene) 106-98-9 1 4.50 1012
14 2-butene 107-01-7 1 4.50 1055
15 tert-butylamine (2-amino-2-methylpropane) 75-64-9 1 150.00 1125
16 butylene (butene) 25167-67-3 1 4.50 1012
17 carbonyl sulphide (carbon oxysulfide) 463-58-1 1 4.50 2204
18 chlorine monoxide (dichlorine oxide) 7791-21-1 1 4.50 no number
19 2-chloropropane (isopropyl chloride) 75-29-6 1 4.50 2356
20 1-chloropropene (1-chloropropylene) 590-21-6 1 4.50 no number
21 2-chloropropene (2-chloropropylene) 557-98-2 1 4.50 2456
22 cyanogen 460-19-5 1 4.50 1026
23 cyclohexane 110-82-7 1 550.00 1145
24 cyclopropane 75-19-4 1 4.50 1027
25 dichlorosilane 4109-96-0 1 4.50 2189
26 difluoroethane (1,1-difluoroethane) 75-37-6 1 4.50 1030
27 1,1-difluoroethylene (vinylidene fluoride) 75-38-7 1 4.50 1959
28 dimethyl ether (methyl ether) 115-10-6 1 4.50 1033
29 dimethyl sulphide 75-18-3 1 150.00 1164
30 dimethylamine 124-40-3 1 4.50 1032 & 1160
31 2,2-dimethylpropane 463-82-1 1 4.50 2044
32 ethane 74-84-0 1 4.50 1035 & 1961
33 ethyl chloride 75-00-3 1 4.50 1037
34 ethyl ether (diethyl ether) 60-29-7 1 4.50 1155
35 ethyl mercaptan 75-08-1 1 4.50 2363
36 ethyl nitrite 109-95-5 1 4.50 1194
37 ethylacetylene 107-00-6 1 4.50 2452
38 ethylamine 75-04-7 1 4.50 1036 & 2270
39 ethylbenzene 100-41-4 1 7000.00 1175
40 ethylene 74-85-1 1 4.50 1038 & 1962
41 gasoline (motor fuel) 86290-81-5 1 150.00 1203
42 gasoline (unleaded) 8006-61-9 1 150.00 1203
43 hydrogen 1333-74-0 1 4.50 1049 & 1966
44 hydrogen peroxide 7722-84-1 52 3.40 2015
45 isobutane 75-28-5 1 4.50 1969
46 isobutylene (2-methylpropene) 115-11-7 1 4.50 1055
47 isopentane (2-methylbutane) 78-78-4 1 4.50 1265
48 isoprene 78-79-5 1 4.50 1218
49 isopropylamine 75-31-0 1 4.50 1221
50 liquefied natural gas 8006-14-2 1 4.50 1972
51 methane 74-82-8 1 4.50 1971 & 1972
52 methyl formate 107-31-3 1 4.50 1243
53 2-methyl-1-butene 563-46-2 1 4.50 2459
54 3-methyl-1-butene 563-45-1 1 4.50 2561
55 methylacetylene (propyne) 74-99-7 1 4.50 1060
56 methylamine 74-89-5 1 4.50 1061
57 naphtha 8030-30-6 1 50.00 1268
58 1,3-pentadiene 504-60-9 1 4.50 no number
59 n-pentane (pentane) 109-66-0 1 4.50 1265
60 cis-2-pentene (beta-cis-amylene) 627-20-3 1 4.50 no number
61 trans-2-pentene (trans-beta-amylene) 646-04-8 1 4.50 no number
62 1-pentene 109-67-1 1 4.50 1108
63 propadiene 463-49-0 1 4.50 2200
64 propane 74-98-6 1 4.50 1978 & 1075
65 propylene 115-07-1 1 4.50 1077
66 silane 7803-62-5 1 4.50 2203
67 sodium chlorate 7775-09-9 10 10.00 1495
68 styrene 100-42-5 10 4.50 2055
69 tetrafluoroethylene 116-14-3 1 4.50 1081
70 tetramethylsilane 75-76-3 1 4.50 2749
71 toluene 108-88-3 1 2500.00 1294
72 trichlorosilane 10025-78-2 1 4.50 1295
73 trifluorochloroethylene (chlorotrifluoroethylene) 79-38-9 1 4.50 1082
74 trimethylamine 75-50-3 1 4.50 1083 & 1297
75 vinyl chloride 75-01-4 1 4.50 1086
76 vinyl ethyl ether (ethyl vinyl ether) 109-92-2 1 4.50 1302
77 vinyl fluoride 75-02-5 1 4.50 1860
78 vinyl methyl ether 107-25-5 1 4.50 1087
79 vinylidene chloride 75-35-4 1 4.50 1303
80 xylenes 1330-20-7 1 8000.00 1307

 

Part 2 - Substances Hazardous When Inhaled
Column 1 Column 2 Column 3  
# Name of Substance CAS Registry Number Concentration (% by weight) Minimum Quantity (tonnes) UN Number
1 acetic acid 64-19-7 95 6.80 2789, 2790
2 acrolein 107-02-8 10 2.27 1092
3 acrylonitrile 107-13-1 10 9.10 1093
4 acryloyl chloride (acrylyl chloride) 814-68-6 10 2.27 no number
5 allyl alcohol 107-18-6 10 6.80 1098
6 allyl chloride 107-05-1 10 9.10 1100
7 allylamine 107-11-9 10 4.50 2334
8 ammonia, anhydrous 7664-41-7 10 4.50 1005
9 ammonia solution 7664-41-7 20 9.10 2073 & 2672
10 arsenic trichloride (arsenous trichloride) 7784-34-1 10 6.80 1560
11 arsine 7784-42-1 1 0.45 2188
12 bis(chloromethyl) ether [dichlorodimethyl ether] 542-88-1 1 0.45 2249
13 boron trichloride 10294-34-5 10 2.27 1741
14 boron trifluoride 7637-07-2 10 2.27 1008
15 boron trifluoride dimethyl etherate 353-42-4 10 6.80 2965
16 bromine 7726-95-6 10 4.50 1744
17 carbon disulphide 75-15-0 10 9.10 1131
18 carbon monoxide 630-08-0 10 6.80 1016
19 chlorine 7782-50-5 10 1.13 1017
20 chlorine dioxide 10049-04-4 1 0.45 no number
21 chloroform (trichloromethane) 67-66-3 10 9.10 1888
22 chloromethyl methyl ether (methyl chloromethyl ether) 107-30-2 10 2.27 1239
23 chloropicrin (trichloronitromethane) 76-06-2 10 2.27 1580
24 chloropicrin (trichloronitromethane) 7790-94-5 10 2.27 1754
25 crotonaldehyde 4170-30-3 10 9.10 1143
26 cyanogen bromide 506-68-3 10 4.50 1143
27 cyanogen chloride 506-77-4 10 4.50 1589
28 cyclohexylamine 108-91-8 10 6.80 2357
29 diborane 19287-45-7 10 1.13 1911
30 1,2-dichloroethane (ethylene dichloride) 107-06-2 10 6.80 1184
31 dichloromethane (methylene chloride) 75-09-2 1 9.10 1593
32 dimethyldichlorosilane (dichlorodimethylsilane) 75-78-5 10 2.27 1162
33 1,1-dimethylhydrazine 57-14-7 10 6.80 1163
34 epichlorohydrin 106-89-8 10 9.10 2023
35 ethylene chlorohydrin (2-chloroethanol) 107-07-3 10 4.50 1135
36 ethylene oxide 75-21-8 10 4.50 1040
37 ethylenediamine 107-15-3 10 9.10 1604
38 ethyleneimine 151-56-4 10 4.50 1185
39 fluorine 7782-41-4 1 0.45 1045
40 formaldehyde, solution 50-00-0 10 6.80 1198 & 2209
41 furan 110-00-9 10 2.27 2389
42 hydrazine 302-01-2 10 6.80 2029
43 hydrochloric acid 7647-01-0 30 6.80 1789
44 hydrofluoric acid 7664-39-3 50 0.45 1790
45 hydrogen bromide (hydrobromic acid) 10035-10-6 10 1.13 1048 & 1788
46 hydrogen chloride, anhydrous 7647-01-0 10 2.27 2186 & 1050
47 hydrogen cyanide (hydrocyanic acid) 74-90-8 10 1.13 1051 & 1613 & 1614
48 hydrogen fluoride, anhydrous 7664-39-3 1 0.45 1052
49 hydrogen selenide 7783-07-5 1 0.22 2202
50 hydrogen sulphide 7783-06-4 10 4.50 1053
51 iron pentacarbonyl 13463-40-6 10 1.13 1994
52 isobutyronitrile 78-82-0 10 9.10 2284
53 isopropyl chloroformate 108-23-6 10 6.80 2407
54 ketene 463-51-4 1 0.22 no number
55 mercury 7439-97-6 NA 1.00 2809
56 methyl bromide 74-83-9 10 2.27 1062
57 methyl chloride 74-87-3 10 4.50 1063
58 methyl chloroformate 79-22-1 10 2.27 1238
59 methyl iodide 74-88-4 10 4.50 2644
60 methyl isocyanate 624-83-9 10 4.50 2480
61 methyl mercaptan 74-93-1 10 4.50 1064
62 methyl thiocyanate 556-64-9 10 9.10 no number
63 methylacrylonitrile 126-98-7 10 4.50 3079
64 methylhydrazine (monomethyl hydrazine) 60-34-4 10 6.80 1244
65 methyltrichlorosilane 75-79-6 10 2.27 1250
66 nickel carbonyl 13463-39-3 1 0.45 1259
67 nitric acid 7697-37-2 80 6.80 2031 & 2032
68 nitric oxide (nitrogen monoxide) 10102-43-9 10 4.50 1660
69 nitrogen dioxide 10102-44-0 10 1.13 1067
70 osmium tetroxide 20816-12-0 1 0.22 2471
71 perchloromethyl mercaptan 594-42-3 10 4.50 1670
72 perchloryl fluoride (trioxychlorofluoride) 7616-94-6 10 6.80 3083
73 peroxyacetic acid (peracetic acid) 79-21-0 10 4.50 3107
74 phenol 108-95-2 10 9.10 1671 & 2312 & 2821
75 phosgene 75-44-5 1 0.22 1076
76 phosphine 7803-51-2 10 2.27 2199
77 phosphorus oxychloride 10025-87-3 10 2.27 1810
78 phosphorus trichloride 7719-12-2 10 6.80 1809
79 phosphorus, white 7723-14-0 N/A 1.00 2447
80 piperidine 110-89-4 10 6.80 2401
81 propionitrile 107-12-0 10 4.50 2404
82 n-propyl chloroformate (propyl chloroformate) 109-61-5 10 6.80 2740
83 propylene oxide 75-56-9 10 4.50 1280
84 propyleneimine 75-55-8 10 4.50 1921
85 stibine 7803-52-3 10 2.27 2676
86 sulphur dioxide 7446-09-5 10 2.27 1079
87 sulphur hexafluoride (sulfur hexafluoride) 2551-62-4 10 9.10 1080
88 sulphur tetrafluoride 7783-60-0 10 1.13 2418
89 sulphur trioxide 7446-11-9 10 4.50 1829
90 sulphuric acid, fuming (oleum) 8014-95-7 N/A 4.50 1831
91 tetraethyl lead 78-00-2 10 2.27 1649
92 tetramethyl lead 75-74-1 10 4.50 no number
93 tetranitromethane 509-14-8 10 4.50 1510
94 thionyl chloride 7719-09-7 10 6.80 1836
95 titanium tetrachloride 7550-45-0 10 1.13 1838
96 toluene diisocyanate 26471-62-5 10 4.50 2078
97 toluene-2,4-diisocyanate 584-84-9 10 4.50 2078
98 toluene-2,6-diisocyanate 91-08-7 10 4.50 2078
99 trans-crotonaldehyde 123-73-9 10 9.10 1143
100 trimethylchlorosilane (chlorotrimethylsilane) 75-77-4 10 4.50 1298
101 vinyl acetate 108-05-4 10 6.80 1301

 

Part 3 - Other Hazardous Substances
Column 1 Column 2 Column 3  
# Name of Substance CAS Registry Number Concentration (% by weight) Minimum Quantity (tonnes) UN Number
1 arsenic 7440-38-2 10 0.22 1558
2 arsenic acid 7778-39-4 10 0.22 1553, 1554
3 arsenic pentoxide 1303-28-2 10 0.22 1559
4 arsenic trioxide (arsenic(III) oxide) 1327-53-3 10 0.22 1561
5 cadmium chloride 10108-64-2 10 0.22 no number
6 cadmium oxide 1306-19-0 10 0.22 no number
7 cadmium sulphate (cadmium sulfate) 10124-36-4 10 0.22 no number
8 cadmium sulphide (cadmium sulfide) 1306-23-6 10 0.22 no number
9 chromic acid 7738-94-5 10 0.22 1463, 1755
10 chromium trioxide 1333-82-0 10 0.22 1463, 1755
11 3,3’-dichlorobenzidine 91-94-1 1 1.13 no number
12 naphthalene (in liquid form) 91-20-3 10 4.5 2304
13 nickel acetate 373-02-4 10 0.22 no number
14

nickel ammonium sulphate

(nickel ammonium sulfate)

15699-18-0 10 0.22 no number
15 nickel carbonate 3333-67-3 10 0.22 no number
16 nickel chloride 7718-54-9 10 0.22 no number
17 nickel nitrate [nickel(II) nitrate] 13138-45-9 10 0.22 2725
18 nickel(II) nitrate, hexahydrate 13478-00-7 10 0.22 2725
19 nickel oxide 1313-99-1 10 0.22 no number
20 nickel(II) sulphate (nickel(II) sulfate) 7786-81-4 10 0.22 no number
21 nickel sulphate, hexahydrate (nickel(II) sulphate, hexahydrate) 10101-97-0 10 0.22 no number
22 nonylphenol (mixed isomer) 25154-52-3 10 1.13 no number
23 p-nonylphenol 104-40-5 10 1.13 no number
24 4-tert-nonylphenol 84852-15-3 10 1.13 no number
25 potassium chromate 7789-00-6 10 0.22 no number
26 sodium arsenate, dibasic 7778-43-0 10 0.22 1685
27 sodium arsenate, dibasic, heptahydrate 10048-95-0 10 0.22 1685
28 sodium arsenite 7784-46-5 10 0.22 1686, 2027
29 sodium chromate 7775-11-3 10 0.22 no number
30 sodium dichromate 10588-01-9 10 0.22 no number
31 tetrachloroethylene (perchloroethylene, Perc) 127-18-4 1 1.13 1897
32 tetrachloromethane (carbon tetrachloride) 56-23-5 1 0.22 1846
33 tributyl tetradecyl phosphonium chloride (TTPC) 81741-28-8 10 0.22 no number
34 trichloroethylene (TCE) 79-01-6 1 1.13 1710

7 CAS Information is the property of the American Chemical Society and any use or redistribution, except as required in supporting regulatory requirements and/or reports to the government when the information and the reports are required by law or administrative policy is not permitted without the prior, written permission of the American Chemical Society

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