Rationale for list of regulated substances under Canadian Environmental Protection Act: appendix C
Appendix C: Toxic Substances Ranking Factors Used to Assign Thresholds and Related Data (Listed in Order of Ranking Factor)
This Appendix presents the toxic substances ranking used to assign threshold quantities in the current RMP list.
| CAS No. | Chemical Name | Ambient Physical State | Level of Concern (LOC) (g/m3) | Basis for LOC | Molecular Weight | Boiling Point (°C) | Ranking Factor | Threshold (lbs) |
|---|---|---|---|---|---|---|---|---|
Ambient Physical States:
|
||||||||
| 107-02-8 | Acrolein | L | 0.011 | IDLH | 56.06 | 52.50 | 0.157 | 5,000 |
| 107-13-1 | Acrylonitrile | L | 1.096 | IDLH | 53.60 | 77.30 | 16.658 | 20,000 |
| 814-68-6 | Acrylyl chloride | L | 0.009 | Tox | 90.51 | 75.00 | 0.096 | 5,000 |
| 107-18-6 | Allyl alcohol | L | 0.356 | IDLH | 58.09 | 97.00 | 5.421 | 15,000 |
| 107-11-9 | Allylamine | L | 0.066 | Tox | 57.09 | 55.00 | 0.900 | 10,000 |
| 7664-41-7 | Ammonia (anhydrous) | G | 0.348 | IDLH | 17.03 | -33.35 | 0.348 | 10,000 |
| 7664-41-7 | Ammonia (aqueous solution, conc 20% or greater) | S | 0.348 | IDLH | 17.03 | based on vapour pressure of solution | 7.88045 | 20,000 |
| 7784-42-1 | Arsine | G | 0.019 | IDLH | 77.93 | -62.50 | 0.019 | 1,000 |
| 10294-34-5 | Boron trichloride | G | 0.100 | Tox | 117.20 | 12.5 | 0.100 | 5,000 |
| 7637-07-2 | Boron trifluoride | G | 0.277 | IDLH | 67.82 | -100.40 | 0.277 | 5,000 |
| 353-42-4 | Boron trifluoride compound with methyl ether 1:1 | L | 0.233 | Tox | 113.89 | 126 | 2.434 | 15,000 |
| 7726-95-6 | Bromine | L | 0.065 | IDLH | 160.00 | 60.00 | 0.454 | 10,000 |
| 75-15-0 | Carbon disulfide | L | 1.560 | IDLH | 76.13 | 46.50 | 17.113 | 20,000 |
| 7782-50-5 | Chlorine | G | 0.087 | IDLH | 70.91 | -34.05 | 0.087 | 2,500 |
| 10049-04-4 | Chlorine dioxide | S | 0.027 | IDLH | 67.45 | Treated as gas at ambient conditions | 0.028 | 1,000 |
| 67-66-3 | Chloroform | L | 4.883 | IDLH | 119.39 | 61.70 | 42.126 | 20,000 |
| 542-88-1 | Bis (chloromethyl) ether | L | 0.002 | Tox | 114.97 | 106.00 | 0.025 | 1,000 |
| 107-30-2 | Chloromethyl methyl ether | L | 0.018 | Tox | 80.52 | 59.00 | 0.200 | 5,000 |
| 4170-30-3 | Crotonaldehyde | L | 1.160 | IDLH | 70.10 | 104.00 | 15.851 | 20,000 |
| 123-73-9 | Trans-Crotonaldehyde | L | 1.160 | IDLH | 70.10 | 104.00 | 15.851 | 20,000 |
| 506-77-4 | Cyanogen chloride | G | 0.300 | Tox | 61.47 | 13.80 | 0.300 | 10,000 |
| 108-91-8 | Cyclohexylamine | L | 1.560 | Tox | 99.17 | 134.50 | 18.2621 | 15,0001 |
| 19287-45-7 | Diborane | G | 0.050 | IDLH | 27.69 | -92.50 | 0.050 | 2,500 |
| 75-78-5 | Dimethyldichlorosilane | L | 0.030 | Tox | 129.07 | 70.00 | 0.248 | 5,000 |
| 57-14-7 | 1,1-Dimethylhydrazine | L | 0.123 | IDLH | 60.10 | 63.90 | 1.665 | 15,000 |
| 106-89-8 | Epichlorohydrin | L | 0.962 | IDLH | 92.53 | 116.50 | 11.276 | 20,000 |
| 75-21-8 | Ethylene oxide | G | 1.440 | IDLH | 44..06 | 10.70 | 1.440 | 10,000 |
| 107-15-3 | Ethylenediamine | L | 4.900 | IDLH | 60.12 | 116.00 | 76.574 | 20,000 |
| 151-56-4 | Ethyleneimine | L | 0.040 | Tox | 43.07 | 55.00 | 0.725 | 10,000 |
| 7782-41-4 | Fluorine | G | 0.039 | IDLH | 38.00 | -188.13 | 0.039 | 1,000 |
| 50-00-0 | Formaldehyde (solution) | S | 0.037 | IDLH | 30.03 | -19.00 | 0.037 | 15,000 |
| 110-00-9 | Furan | L | 0.012 | Tox | 68.08 | 32.00 | 0.135 | 5,000 |
| 302-01-2 | Hydrazine | L | 0.105 | IDLH | 32.05 | 113.50 | 2.485 | 15,000 |
| 7647-01-0 | Hydrochloric acid (solution, conc 37% or greater)2 | S | 0.150 | IDLH | 36.46 | based on vapour pressure of solution | 1.60294 | 15,000 |
| 7664-39-3 | Hydrofluoric acid (conc 50% or greater) | S | 0.0240 | IDLH | 20.01 | 19.51 | 0.024 | 1,000 |
| 74-90-8 | Hydrogen cyanide | G | 0.055 | IDLH | 27.03 | 25.60 | 0.055 | 2,500 |
| 7547-01-0 | Hydrogen chloride (anhydrous) | G | 0.150 | IDLH | 36.46 | -85.00 | 0.150 | 5,000 |
| 7664-39-3 | Hydrogen fluoride, anhydrous | G | 0.0245 | IDLH | 20.01 | 19.51 | 0.024 | 1,000 |
| 7783-07-5 | Hydrogen selenide | G | 0.007 | IDLH | 80.98 | -41.30 | 0.007 | 500 |
| 7783-06-4 | Hydrogen sulphide | G | 0.420 | TLV | 34.08 | -60.33 | 0.420 | 10,000 |
| 13463-40-6 | Iron pentacarbonyl | L | 0.008 | TLV | 195.90 | 103.00 | 0.055 | 2,500 |
| 78-82-0 | Isobutyronitrile | L | 2.820 | Tox | 69.10 | 103.80 | 38.886 | 20,000 |
| 108-23-6 | Isopropyl chloroformate | L | 1.000 | Tox | 122.55 | 104.60 | 9.413 | 15,000 |
| 126-98-7 | Methacrylonitrile | L | 0.030 | TLV | 67.10 | 90.30 | 0.407 | 10,000 |
| 74-87-3 | Methyl chloride | G | 21.000 | IDLH | 50.49 | -24.00 | 21.0003 | 10,000 |
| 79-22-1 | Methyl chloroformate | L | 0.018 | Tox | 94.50 | 71.00 | 0.189 | 5,000 |
| 60-34-4 | Methylhydrazine | L | 0.096 | IDLH | 46.07 | 87.50 | 1.662 | 15,000 |
| 624-83-9 | Methyl isocyanate | L | 0.047 | IDLH | 57.05 | 39.00 | 0.618 | 10,000 |
| 74-93-1 | Methyl mercaptan | G | 0.787 | IDLH | 48.11 | 5.95 | 0.787 | 10,000 |
| 556-64-9 | Methyl thiocyanate | L | 0.850 | Tox | 73.12 | 130.00 | 12.070 | 20,000 |
| 75-79-6 | Methyltrichlorosilane | L | 0.018 | Tox | 149.5 | 66.5 | 0.133 | 5,000 |
| 13463-39-3 | Nickel carbonyl | L | 0.007 | Tox | 170.73 | 43.00 | 0.042 | 1,000 |
| 7697-37-2 | Nitric acid (conc 80% or greater) | L | 0.258 | IDLH | 63.01 | 83.00 | 3.576 | 15,000 |
| 10102-43-9 | Nitric oxide | G | 0.300 | TLV | 30.01 | -151.70 | 0.300 | 10,000 |
| 8014-95-7 | Oleum (fuming sulphuric acid) | L | 0.030 | IDLH | 80.06 | 45 | 0.316 | 10,000 |
| 79-21-0 | Peracetic acid | L | 0.045 | Tox | 76.05 | 105.00 | 0.584 | 10,000 |
| 594-42-3 | Perchloromethyl mercaptan | L | 0.076 | IDLH | 185.90 | 147.00 | 0.602 | 10,000 |
| 75-44-5 | Phosgene | G | 0.008 | IDLH | 98.92 | 8.20 | 0.008 | 500 |
| 7803-51-2 | Phosphine | G | 0.278 | IDLH | 34.00 | -87.70 | 0.278 | 5,000 |
| 10025-87-3 | Phosphorus oxychloride | L | 0.030 | Tox | 153.30 | 106.00 | 0.244 | 5,000 |
| 7719-12-2 | Phosphorus trichloride | L | 0.280 | IDLH | 137.40 | 76.00 | 2.256 | 15,000 |
| 110-89-4 | Piperidine | L | 0.224 | Tox | 85.15 | 106.00 | 2.701 | 15,000 |
| 107-12-0 | Propionitrile | L | 0.037 | Tox | 55.08 | 97.20 | 0.584 | 10,000 |
| 109-61-5 | n-Propyl chloroformate | L | 0.100 | Tox | 122.60 | 114.00 | 0.965 | 15,0004 |
| 75-56-9 | Propylene oxide | L | 4.840 | IDLH | 58.08 | 34.23 | 61.1353 | 10,0003 |
| 75-55-8 | Propyleneimine | L | 1.180 | IDLH | 57.11 | 66.00 | 16.633 | 10,0005 |
| 7446-09-5 | Sulphur dioxide | G | 0.262 | IDLH | 64.07 | -10.00 | 0.262 | 5,000 |
| 7783-60-0 | Sulphur tetrafluoride | G | 0.080 | Tox | 108.10 | -40.00 | 0.080 | 2,500 |
| 7446-11-9 | Sulphur trioxide | L | 0.030 | Tox | 80.06 | 45.00 | 0.316 | 10,000 |
| 75-74-1 | Tetramethyl lead | L | 0.040 | IDLH | 267.30 | 110.00* | 0.226 | 10,000 |
| 509-14-8 | Tetranitromethane | L | 0.080 | TLV | 196.00 | 126.00 | 0.581 | 10,000 |
| 7550-45-0 | Titanium tetrachloride | L | 0.010 | Tox | 189.70 | 136.40 | 0.076 | 2,500 |
| 584-84-9 | Toluene-2, 4-di-isocyanate | L | 0.072 | IDLH | 174.20 | 251.00 | 0.573 | 10,000 |
| 91-08-7 | Toluene-2, 6-di-isocyanate | L | 0.072 | IDLH | 174.20 | 129.00* | 0.573 | 10,000 |
| 26471-62-5 | Toluene di-isocyanate (unspecified isomer) | L | 0.022 | IDLH | 174.20 | 251.00 (based on 2,4-isomer) | 0.573 | 10,000 |
| 75-77-4 | Trimethylchlorosilane | L | 0.500 | Tox | 108.70 | 57.00 | 4.4576 | 10,0006 |
| 108-05-4 | Vinyl acetate monomer | L | 0.540 | Tox | 86.09 | 72.00 | 5.884 | 15,000 |
References:
- National Institute for Occupational Safety and Health (NIOSH), Pocket Guide to Chemical Hazards, 1990 edition.
- NIOSH, Registry of Toxic Effects of Chemical Substances (RTECS), on-line database, December, 1990.
- U.S. Environmental Protection Agency, Federal Emergency Management Agency, U.S. Department of Transportation, Technical Guidance for Hazards Analysis, Emergency Planning for Extremely Hazardous Substances, December, 1987.
- U.S. Environmental Protection Agency, EPA Chemical Profiles for Extremely Hazardous Substances, June 1988.
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