Implementation Guidelines for the Environmental Emergency Regulations 2011
- 1.0 Purpose of the Implementation Guidelines
- 2.0 Environmental Emergency Authorities under Part 8 of CEPA 1999
- 3.0 Benefits of E2 Planning
- 4.0 E2 Regulations - Am I Regulated?
- 5.0 E2 Plans
- 6.0 Notification of Environmental Emergencies
- 7.0 Access to Submitted Notices
- 8.0 Compliance and Enforcement
- 9.0 Summary of the Risk Evaluation Framework
- Appendix 1 - Suggested References for Environmental Emergencies Prevention, Preparedness and Response Measures and the Development of E2 Plans
- Appendix 2 - Notices of Identification of Substance and Place, of Implementation and Testing of E2 Plans, and of Closure and Decommissioning and Report on the Preparation of E2 Plans and Certification
- Appendix 3 - Schedule 1 of the Environmental Emergency Regulations
- Appendix 4 - Regional Contact Information
- Appendix 5 - Determination of Container Capacity and Substance Quantity
- Appendix 6 - Flow Chart for the Propane Exception
- Appendix 7 - Notification and Reporting of Environmental Emergencies Under Section 201 of CEPA 1999
- Appendix 8 - Checklist to Prepare an E2 Plan
- Appendix 9 - Summary of Risk Evaluation Framework Methodology for Determining Thresholds for Environmental Emergency Plans
- References
Appendix 3
Schedule 1 of the Environmental Emergency Regulations
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.
| 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 |
| 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 |
| 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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