This Appendix contains a listing of toxic and reactive highly hazardous chemicals which present a potential for a catastrophic event at or above the threshold quantity.

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                                       |             |
        Chemical Name                  |   CAS**     |     TQ**
________________________________________|_____________|_____________
                                       |             |
Acetaldehyde............................|     75-07-0 |   2500
Acrolein (2-Propenal)...................|    107-02-8 |    150
Acrylyl Chloride........................|    814-68-6 |    250
Allyl Chloride..........................|    107-05-1 |   1000
Allylamine..............................|    107-11-9 |   1000
Alkylaluminums..........................|      Varies |   5000
Ammonia, Anhydrous......................|   7664-41-7 |  10000
Ammonia solutions (greater than 44      |             |
 percent ammonia by weight)............|   7664-41-7 |  15000
Ammonium Perchlorate....................|   7790-98-9 |    500
Ammonium Permanganate...................|   7787-36-2 |   7500
Arsine (also called Arsenic Hydride)....|   7784-42-1 |    100
Bis(Chloromethyl) Ether.................|    542-88-1 |    100
Boron Trichloride.......................|  10294-34-5 |   2500
Boron Trifluoride.......................|   7637-07-2 |    250
Bromine.................................|   7726-95-6 |   1500
Bromine Chloride........................|  13863-41-7 |   1500
Bromine Pentafluoride...................|   7789-30-2 |   2500
Bromine Trifluoride.....................|   7787-71-5 |  15000
3-Bromopropyne (also called Propargyl   |             |
 Bromide)..............................|    106-96-7 |    100
Butyl Hydroperoxide (Tertiary)..........|     75-91-2 |   5000
Butyl Perbenzoate (Tertiary)............|    614-45-9 |   7500
Carbonyl Chloride (see Phosgene)........|     75-44-5 |    100
* Carbonyl Fluoride.....................|    353-50-4 |   2500
Cellulose Nitrate (concentration        |             |
 greater than 12.6 percent nitrogen....|   9004-70-0 |   2500
Chlorine................................|   7782-50-5 |   1500
Chlorine Dioxide........................|  10049-04-4 |   1000
Chlorine Pentrafluoride.................|  13637-63-3 |   1000
Chlorine Trifluoride....................|   7790-91-2 |   1000
Chlorodiethylaluminum (also called      |             |
 Diethylaluminum Chloride).............|     96-10-6 |   5000
1-Chloro-2,4-Dinitrobenzene.............|     97-00-7 |   5000
Chloromethyl Methyl Ether...............|    107-30-2 |    500
Chloropicrin............................|     76-06-2 |    500
Chloropicrin and Methyl Bromide mixture.|        None |   1500
Chloropicrin and Methyl Chloride        |             |
 mixture...............................|        None |   1500
Commune Hydroperoxide...................|     80-15-9 |   5000
Cyanogen................................|    460-19-5 |   2500
Cyanogen Chloride.......................|    506-77-4 |    500
Cyanuric Fluoride.......................|    675-14-9 |    100
Diastole Peroxide (concentration        |             |
 greater than 70 percent)..............|    110-22-5 |   5000
Diazomethane............................|    334-88-3 |    500
Dibenzoyl Peroxide......................|     94-36-0 |   7500
Diborane................................|  19287-45-7 |    100
Dibutyl Peroxide (Tertiary).............|    110-05-4 |   5000
Dichloro Acetylene......................|   7572-29-4 |    250
Dichlorosilane..........................|   4109-96-0 |   2500
Diethylzinc.............................|    557-20-0 |  10000
Diisopropyl Peroxydicarbonate...........|    105-64-6 |   7500
Dilauroyl Peroxide......................|    105-74-8 |   7500
Dimethyldichlorosilane..................|     75-78-5 |   1000
Dimethylhydrazine, 1,1-.................|     57-14-7 |   1000
Dimethylamine, Anhydrous................|    124-40-3 |   2500
2,4-Dinitroaniline......................|     97-02-9 |   5000
Ethyl Methyl Ketone Peroxide (also      |             |
 Methyl Ethyl Ketone Peroxide;         |             |
 concentration greater than 60 percent)|   1338-23-4 |   5000
Ethyl Nitrite...........................|    109-95-5 |   5000
Ethylamine..............................|     75-04-7 |   7500
Ethylene Fluorohydrin...................|    371-62-0 |    100
Ethylene Oxide..........................|     75-21-8 |   5000
Ethyleneimine...........................|    151-56-4 |   1000
Fluorine................................|   7782-41-4 |   1000
Formaldehyde (Formalin).................|     50-00-0 |   1000
Furan...................................|    110-00-9 |    500
Hexafluoroacetone.......................|    684-16-2 |   5000
Hydrochloric Acid, Anhydrous............|   7647-01-0 |   5000
Hydrofluoric Acid, Anhydrous............|   7664-39-3 |   1000
Hydrogen Bromide........................|  10035-10-6 |   5000
Hydrogen Chloride.......................|   7647-01-0 |   5000
Hydrogen Cyanide, Anhydrous.............|     74-90-8 |   1000
Hydrogen Fluoride.......................|   7664-39-3 |   1000
Hydrogen Peroxide (52 percent by weight |             |
 or greater)...........................|   7722-84-1 |   7500
Hydrogen Selenide.......................|   7783-07-5 |    150
Hydrogen Sulfide........................|   7783-06-4 |   1500
Hydroxylamine...........................|   7803-49-8 |   2500
Iron, Pentacarbonyl.....................|  13463-40-6 |    250
Isopropylamine..........................|     75-31-0 |   5000
Ketene..................................|    463-51-4 |    100
Methacrylaldehyde.......................|     78-85-3 |   1000
Methacryloyl Chloride...................|    920-46-7 |    150
Methacryloyloxyethyl Isocyanate.........|  30674-80-7 |    100
Methyl Acrylonitrile....................|    126-98-7 |    250
Methylamine, Anhydrous..................|     74-89-5 |   1000
Methyl Bromide..........................|     74-83-9 |   2500
Methyl Chloride.........................|     74-87-3 |  15000
Methyl Chloroformate....................|     79-22-1 |    500
Methyl Ethyl Ketone Peroxide            |             |
 (concentration greater than 60        |             |
 percent)..............................|   1338-23-4 |   5000
Methyl Fluoroacetate....................|    453-18-9 |    100
Methyl Fluorosulfate....................|    421-20-5 |    100
Methyl Hydrazine........................|     60-34-4 |    100
Methyl Iodide...........................|     74-88-4 |   7500
Methyl Isocyanate.......................|    624-83-9 |    250
Methyl Mercaptan........................|     74-93-1 |   5000
Methyl Vinyl Ketone.....................|     79-84-4 |    100
Methyltrichlorosilane...................|     75-79-6 |    500
Nickel Carbonly (Nickel Tetracarbonyl)..|  13463-39-3 |    150
Nitric Acid (94.5 percent by weight or  |             |
 greater)..............................|   7697-37-2 |    500
Nitric Oxide............................|  10102-43-9 |    250
Nitroaniline (para Nitroaniline)........|    100-01-6 |   5000
Nitromethane............................|     75-52-5 |   2500
Nitrogen Dioxide........................|  10102-44-0 |    250
Nitrogen Oxides (NO; NO(2); N2O4; N2O3).|  10102-44-0 |    250
Nitrogen Tetroxide (also called         |             |
 Nitrogen Peroxide)....................|  10544-72-6 |    250
Nitrogen Trifluoride....................|   7783-54-2 |   5000
Nitrogen Trioxide.......................|  10544-73-7 |    250
Oleum (65 percent to 80 percent by      |             |
 weight; also called Fuming Sulfuric   |             |
 Acid).................................|   8014-94-7 |   1000
Osmium Tetroxide........................|  20816-12-0 |    100
Oxygen Difluoride (Fluorine Monoxide)...|   7783-41-7 |    100
Ozone...................................|  10028-15-6 |    100
Pentaborane.............................|  19624-22-7 |    100
Peracetic Acid (concentration greater   |             |
 60 percent Acetic Acid; also called   |             |
 Peroxyacetic  Acid)...................|     79-21-0 |   1000
Perchloric Acid (concentration greater  |             |
 than 60 percent by weight)............|   7601-90-3 |   5000
Perchloromethyl Mercaptan...............|    594-42-3 |    150
Perchloryl Fluoride.....................|   7616-94-6 |   5000
Peroxyacetic Acid (concentration        |             |
 greater than 60 percent Acetic Acid;  |             |
 also called Peracetic Acid)...........|     79-21-0 |   1000
Phosgene (also called Carbonyl Chloride)|     75-44-5 |    100
Phosphine (Hydrogen Phosphide)..........|   7803-51-2 |    100
Phosphorus Oxychloride (also called     |             |
 Phosphoryl Chloride)..................|  10025-87-3 |   1000
Phosphorus Trichloride..................|   7719-12-2 |   1000
Phosphoryl Chloride (also called        |             |
 Phosphorus Oxychloride)...............|  10025-87-3 |   1000
Propargyl Bromide.......................|    106-96-7 |    100
Propyl Nitrate..........................|     627-3-4 |   2500
Sarin...................................|    107-44-8 |    100
Selenium Hexafluoride...................|   7783-79-1 |   1000
Stibine (Antimony Hydride)..............|   7803-52-3 |    500
Sulfur Dioxide (liquid).................|   7446-09-5 |   1000
Sulfur Pentafluoride....................|   5714-22-7 |    250
Sulfur Tetrafluoride....................|   7783-60-0 |    250
Sulfur Trioxide (also called Sulfuric   |             |
 Anhydride)............................|   7446-11-9 |   1000
Sulfuric Anhydride (also called Sulfur  |             |
 Trioxide).............................|   7446-11-9 |   1000
Tellurium Hexafluoride..................|   7783-80-4 |    250
Tetrafluoroethylene.....................|    116-14-3 |   5000
Tetrafluorohydrazine....................|  10036-47-2 |   5000
Tetramethyl Lead........................|     75-74-1 |   1000
Thionyl Chloride........................|   7719-09-7 |    250
Trichloro (Chloromethyl) Silane.........|   1558-25-4 |    100
Trichloro (dichlorophenyl) Silane.......|  27137-85-5 |   2500
Trichlorosilane.........................|  10025-78-2 |   5000
Trifluorochloroethylene.................|     79-38-9 |  10000
Trimethyoxysilane.......................|   2487-90-3 |   1500
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 Footnote(*) Chemical Abstract Service Number
 Footnote(**) Threshold Quantity in Pounds (Amount necessary to be
covered by this standard.)