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Research and Special Programs Admin., DOT § 172.101

TABLE 2 TO APPENDIX AÐRADIONUCLIDESÐ the class of the material must be determined Continued in accordance with § 173.2a of this sub- chapter. 3. This appendix contains two columns. (2)Ð (3)ÐReportable Atomic The first column, entitled ‘‘S.M.P.’’ (for se- (1)ÐRadionuclide Num- Quantity (RQ) ber Ci (TBq) vere marine pollutants), identifies whether a material is a severe marine pollutant. If the Ytterbium-169 ...... 70 10 (.37) letters ‘‘PP’’ appear in this column for a ma- Ytterbium-175 ...... 70 100 (3.7) terial, the material is a severe marine pol- Ytterbium-177 ...... 70 1000 (37) lutant, otherwise it is not. The second col- Ytterbium-178 ...... 70 1000 (37) umn, entitled ‘‘Marine Pollutant’’ , lists the Yttrium-86 ...... 39 10 (.37) Yttrium-86m ...... 39 1000 (37) marine pollutants. Yttrium-87 ...... 39 10 (.37) 4. If a material not listed in this appendix Yttrium-88 ...... 39 10 (.37) meets the criteria for a marine pollutant, as Yttrium-90 ...... 39 10 (.37) provided in the General Introduction of the Yttrium-90m ...... 39 100 (3.7) IMDG Code, Guidelines for the Identification Yttrium-91 ...... 39 10 (.37) of Harmful Substances in Packaged Form, Yttrium-91m ...... 39 1000 (37) Yttrium-92 ...... 39 100 (3.7) the material may be transported as a marine Yttrium-93 ...... 39 100 (3.7) pollutant in accordance with the applicable Yttrium-94 ...... 39 1000 (37) requirements of this subchapter. Yttrium-95 ...... 39 1000 (37) 5. If approved by the Associate Adminis- Zinc-62 ...... 30 100 (3.7) trator for Hazardous Materials Safety, a ma- Zinc-63 ...... 30 1000 (37) terial listed in this appendix which does not Zinc-65 ...... 30 10 (.37) meet the criteria for a marine pollutant, as Zinc-69 ...... 30 1000 (37) Zinc-69m ...... 30 100 (3.7) provided in the General Introduction of the Zinc-71m ...... 30 100 (3.7) IMDG Code, Guidelines for the Identification Zinc-72 ...... 30 100 (3.7) of Harmful Substances in Packaged Form, is Zirconium-86 ...... 40 100 (3.7) excepted from the requirements of this sub- Zirconium-88 ...... 40 10 (.37) chapter as a marine pollutant. Zirconium-89 ...... 40 100 (3.7) Zirconium-93 ...... 40 1 (.037) Zirconium-95 ...... 40 10 (.37) APPENDIX B TO § 172.101—LIST OF Zirconium-97 ...... 40 10 (.37) MARINE POLLUTANTS

$ The RQs for all radionuclides apply to chemical com- S.M.P. Marine Pollutant pounds containing the radionuclides and elemental forms re- gardless of the diameter of pieces of solid material. (1) (2) ² The RQ of one curie applies to all radionuclides not other- wise listed. Whenever the RQs in TABLE 1ÐHAZARDOUS Acetal SUBSTANCES OTHER THAN RADIONUCLIDES and this table conflict, the lowest RQ shall apply. For example, uranyl cyanohydrin, stabilized acetate and uranyl nitrate have RQs shown in TABLE 1 of tetrabromide 100 pounds, equivalent to about one-tenth the RQ level for Acetylene tetrachloride uranium-238 in this table. Acraldehyde, inhibited ** The method to determine the RQs for mixtures or solu- Acrolein, inhibited tions of radionuclides can be found in paragraph 7 of the note preceding TABLE 1 of this appendix. RQs for the following Acrylic , inhibited four common radionuclide mixtures are provided: radium-226 C-12 - C-16 poly(1-6) ethoxylate in secular equilibrium with its daughters (0.053 curie); natural Alcohol C-13 - C-15 poly(1-6) ethoxylate uranium (0.1 curie); natural uranium in secular equilibrium Alcohol C-6 - C-17 (secondary)poly(3-6) ethoxylate with its daughters (0.052 curie); and natural thorium in secular equilibrium with its daughters (0.011 curie). PP *** Indicates that the name was added by RSPA because it Alkyl (c12-c14) dimethylamine appears in the list of radionuclides in 49 CFR 173.435. The reportable quantity (RQ), if not specifically listed elsewhere in Alkyl (c7-c9) nitrates this appendix, shall be determined in accordance with the pro- Alkylbenzenesulphonates, branched and straight cedures in paragraph 7 of this appendix. chain Alkylphenols, liquid, n.o.s. (including C2-C12 homo- [Amdt. 172–122, 55 FR 46798, Nov. 7, 1990] logues) Alkylphenols, solid, n.o.s. (including C2-C12 homo- EDITORIAL NOTE: For FEDERAL REGISTER ci- logues) tations affecting appendix A to § 172.101, see Allyl bromide the List of CFR Sections Affected in the ortho-Aminoanisole Finding Aids section of this volume. Ammonium dinitro-o-cresolate n-Amylbenzene APPENDIX B TO § 172.101—LIST OF Amyl mercaptans MARINE POLLUTANTS Anisole PP Azinphos-ethyl 1. This appendix lists potential marine pol- PP Azinphos-methyl lutants as defined in § 171.8 of this sub- Barium chapter. Benomyl 2. If a marine pollutant meets the defini- Benquinox tion of any hazard class or division as de- Benzaldehyde fined in this subchapter, other than Class 9, Benzyl chlorocarbonate

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S.M.P. Marine Pollutant S.M.P. Marine Pollutant

(1) (2) (1) (2) Benzyl chloroformate PP Chlorpyriphos PP Binapacryl PP Chlorthiophos N,N-Bis (2-hydroxyethyl) oleamide (LOA) Coal tar PP Brodifacoum Coal tar naphtha Bromine cyanide Cocculus Bromoacetone Coconitrile Bromoallylene Copper acetoarsenite Bromobenzene Copper arsenite ortho-Bromobenzyl cyanide Copper Bromocyane PP Copper chloride solution Bromoform PP Copper cyanide PP Bromophos-ethyl PP Copper metal powder 3-Bromopropene PP Copper sulphate, anhydrous, hydrates Bromoxynil Coumachlor Butanedione PP 2-Butenal, stabilized Creosote (coal tar) Butyl Creosote (wood tar) Butyl benzyl phthalate (o-; m-; p-) n-Butyl butyrate PP Cresyl diphenyl phosphate N-tert-butyl-N-cyclopropyl-6-methylthio-1,3,5-triazine- Cresylic 2,4-diamine Cresylic acid sodium Butyl mercaptans Crotonaldehyde, stabilized Butylphenols, liquid Crotonic aldehyde, stabilized Butylphenols, solid Crotoxyphos 2,4-Di-tert-butylphenol 2,6-Di-tert-butylphenol Cupric arsenite para-tertiary-butyltoluene PP Cupric chloride Butyraldehyde PP Cupric cyanide PP Cadmium compounds PP Cupric Cadmium sulphide Cupriethylenediamine solution PP Cuprous chloride Calcium arsenate and calcium arsenite, mixtures, Cyanide mixtures solid Cyanide solutions Calcium cyanide , inorganic, n.o.s. Calcium naphthenate Cyanogen bromide PP Camphechlor Cyanogen chloride, inhibited Camphor oil PP 1,5,9-Cyclododecatriene PP Cyhexatin PP Cymenes (o-;m-;p-) tetrabromide PP 2,4-D PP PP DDT Cartap hydrochloride normal-Decaldehyde PP normal-Decanol Decyl acrylate PP Chlorinated paraffins (C-10 - C-13) Decycloxytetrahydrothiophene dioxide PP Chlorinated paraffins (C14±C17), with more than 1% DEF shorter chain length Di-allate Di-n-Butyl phthalate Chlorine cyanide, inhibited PP Dialifos Chlormephos 4,4'-Diaminodiphenylmethane Chloroacetone, stabilized PP 1-Chloro-2,3-Epoxypropane 1,3-Dibromobenzene 2-Chloro-6-nitrotoluene PP Dichlofenthion 4-Chloro-2-nitrotoluene Dichloroanilines Chloro-ortho-nitrotoluene 1,3-Dichlorobenzene 2-Chloro-5-trifluoromethylnitrobenzene 1,2-Dichlorobenzene para-Chlorobenzyl chloride, liquid or solid 1,4-Dichlorobenzene Chlorodinitrobenzenes, liquid or solid Dichlorobenzene (meta; ortho; para) 1-Chloroheptane 2,2-Dichlorodiethyl ether 1-Chlorohexane Dichlorodimethyl ether, symmetrical Chloronitroanilines Di-(2-chloroethyl) ether Chloronitrotoluenes liquid 1,1-Dichloroethylene, inhibited Chloronitrotoluenes, solid 1,6-Dichlorohexane 1-Chlorooctane Dichlorophenols, liquid PP Chlorophenolates, liquid Dichlorophenols, solid PP Chlorophenolates, solid 2,4-Dichlorophenoxyacetic acid (see also 2,4D) Chlorophenols, liquid 2,4-Dichlorophenoxyacetic acid diethanolamine salt Chlorophenols, solid 2,4-Dichlorophenoxyacetic acid dimethylamine salt Chlorophenyltrichlorosilane 2,4-Dichlorophenoxyacetic acid triisopropylamine salt alpha-Chloropropylene Dichlorophenyltrichlorosilane Chlorotoluenes (ortho-, meta-, para-) PP

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S.M.P. Marine Pollutant S.M.P. Marine Pollutant

(1) (2) (1) (2) 2-Ethylhexenal PP Fenaminphos Diethybenzenes (mixed isomers) PP Fenbutatin oxide Diisopropylbenzenes PP Diisopropylnaphthalene PP PP Fensulfothion Dimethyl disulphide PP Dimethyl glyoxal (butanedione) PP Fentin acetate Dimethyl sulphide PP Fentin hydroxide PP N,N-Dimethyldodecylamine Ferric arsenate Dimethylhydrazine, symmetrical Ferric arsenite Dimethylhydrazine, unsymmetrical Ferrous arsenate Dimethylphenols, liquid or solid PP Dinitro-o-, solid Dinitro-o-cresol, solution PP Furathiocarb (ISO) Dinitrochlorobenzenes, liquid or solid PP gamma-BHC Dinitrophenol, dry or wetted with less than 15 per Gasoline, leaded cent , by mass PP Dinitrophenol solutions Heptenophos Dinitrophenol, wetted with not less than 15 per cent n-Heptaldehyde water, by mass n-Heptylbenzene Dinitrophenolates alkali metals, dry or wetted with normal-Heptyl chloride less than 15 per cent water, by mass PP Hexachlorobutadiene Dinitrophenolates, wetted with not less than 15 per PP 1,3-Hexachlorobutadiene cent water, by mass 2,4-Hexadiene aldehyde Dinobuton liquid Dinoseb Hexaethyl tetraphosphate, solid Dinoseb acetate normal-Hexyl chloride Dioxacarb normal-Hexaldehyde n-Hexylbenzene Dipentene Hydrocyanic acid, anhydrous, stabilized, containing Diphacinone less than 3% water Diphenyl Hydrocyanic acid, anhydrous, stabilized, containing Diphenyl ether less than 3% water and absorbed in a porous inert Diphenyl ether/biphenyl phenyl ether mixtures material Diphenyl/diphenyl ether (mixtures) Hydrocyanic acid, aqueous solutions not more than Diphenyl oxide and biphenyl phenyl ether mixtures 20% hydrocyanic acid PP Diphenylamine chloroarsine cyanide solution in alcohol, with notmore PP Diphenylchloroarsine, solid or liquid than 45% hydrogen cyanide Hydrogen cyanide, stabilized with less than 3% 1,4-Di-tert-butylbenzene water DNOC Hydrogen cyanide, stabilized with less than 3% DNOC () water and absorbed in a porous inert material Dodecyl diphenyl oxide disulphonate Hydroxydimethylbenzenes, liquid or solid Dodecyl hydroxypropyl sulfide Ioxynil 1-Dodecylamine oxide, spent PP Dodecylphenol Iron sponge, spent Drazoxolon Isoamyl mercaptan Edifenphos PP Isobutyl aldehyde PP Isobutyl butyrate Epibromohydrin Isobutyl isobutyrate Epichlorohydrin Isobutyl propionate PP EPN Isobutylbenzene EPTC (ISO) Isobutyraldehyde PP Isodecaldehyde PP Isodecanol Isodecyl acrylate Ethyl acrylate, inhibited Isodecyl diphenyl phosphate Ethyl chlorothioformate Isofenphos Ethyl fluid Isononanol Ethyl mercaptan Isooctanol 1-Ethyl-2-methylbenzene Isooctyl nitrate 2-Ethylhexyl nitrate Isoprocarb 5-Ethyl-2-picoline Isopropenylbenzene Ethyl propenoate, inhibited Isopropylbenzene 2-Ethyl-3-propylacrolein Isotetramethylbenzene Ethyl tetraphosphate Isovaleraldehyde 2-Ethylbutyraldehyde PP Ethyldichloroarsine Lead acetate dibromide and methyl bromide mixtures, Lead arsenates liquid Lead arsenites 2-Ethylhexaldehyde Lead compounds, soluble, n.o.s.

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S.M.P. Marine Pollutant S.M.P. Marine Pollutant

(1) (2) (1) (2) Lead cyanide Lead nitrate Methanethiol Lead perchlorate, solid or solution Lead tetraethyl Lead tetramethyl ortho-Methoxyaniline PP Methyl bromide and ethylene dibromide mixtures, liq- London Purple uid Magnesium arsenate 1-Methyl-2- 1-Methyl-4-ethylbenzene Mancozeb (ISO) 2-Methyl-5-ethylpyridine Maneb Methyl mercaptan Maneb preparations with not less than 60% maneb 2-Methyl-2-phenylpropane Maneb preparation, stabilized against self-heating Methyl salicylate Maneb stabilized or Maneb preparations, stabilized 3-Methylacroleine, stabilized against self-heating 2-Methylbutyraldehyde Manganese ethylene-1,2-bis dithiocarbamate Methylchlorobenzenes Manganese ethylene-1,2-bis-dithiocarbamate, sta- Methylnaphthalenes, liquid bilized against self-heating Methylnaphthalenes, solid Mecarbam Methylnitrophenols Mephosfolan 3-Methylpyradine Mercaptodimethur Methylstyrenes, inhibited PP Mercuric acetate Methyltrithion PP Mercuric ammonium chloride Methylvinylbenzenes, inhibited PP Mercuric arsenate PP PP Mercuric benzoate Mexacarbate PP Mercuric bisulphate PP Mercuric bromide PP Mercuric chloride Motor fuel anti-knock mixtures PP Mercuric cyanide Motor fuel anti-knock mixtures or compounds PP Mercuric gluconate Nabam Mercuric PP Mercuric nitrate , crude or refined PP Mercuric oleate Naphthalene, molten PP Mercuric oxide Naphthenic , liquid PP Mercuric oxycyanide, desensitized Naphthenic acids, solid PP Mercuric potassium cyanide PP Nickel carbonyl PP Mercuric Sulphate PP Nickel cyanide PP Mercuric thiocyanate PP Nickel tetracarbonyl PP Mercurol 3-Nitro-4-chlorobenzotrifluoride PP Mercurous acetate Nitrobenzene PP Mercurous bisulphate Nitrobenzotrifluorides, liquid or solid PP Mercurous bromide Nitrocresols PP Mercurous chloride Nitrotolueunes (ortho-;meta-;para-), liquid PP Mercurous nitrate Nitrotoluenes (ortho-;meta-;para-), solid PP Mercurous salicylate Nitroxyluenes, liquid or solid PP Mercurous sulphate 1-Nonanal PP Mercury acetates 1-Nonanol PP Mercury ammonium chloride PP Mercury based pesticide, liquid, flammable, toxic normal-Octaldehyde PP Mercury based , liquid, toxic, flammable 1-Octanol PP Mercury based pesticides, liquid, toxic Oleylamine PP Mercury based pesticides, solid, toxic PP Organotin compounds, liquid, n.o.s. PP Mercury benzoate PP Organotin compounds (pesticides) PP Mercury bichloride PP Organotin compounds, solid, n.o.s. PP Mercury bisulphates PP Organotin pesticides, liquid, flammable, toxic, n.o.s., PP Mercury bromides flash point less than 23deg C PP Mercury compounds, liquid, n.o.s. PP Organotin pesticides, liquid, toxic, flammable, n.o.s. PP Mercury compounds, solid, n.o.s. PP Organotin pesticides, liquid, toxic, n.o.s. PP Mercury cyanide PP Organotin pesticides, solid, toxic, n.o.s. PP Mercury gluconate Orthoarsenic acid PP Mercury (I) (mercurous) compounds (pesticides) PP Osmium tetroxide PP Mercury (II) (mercuric) compounds (pesticides) Mercury iodide Oxydisulfoton PP Mercury nucleate PP Mercury oleate PP PP Mercury oxide PP Parathion-methyl PP Mercury oxycyanide, desensitized PP PCBs*** PP Mercury potassium cyanide Pentachloroethane PP Mercury potassium iodide PP Pentachlorophenol PP Mercury salicylate Pentalin PP Mercury Pentanethiols PP Mercury thiocyanate n-Pentylbenzene Metam-sodium Perchloroethylene

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S.M.P. Marine Pollutant S.M.P. Marine Pollutant

(1) (2) (1) (2) Perchloromethylmercaptan PP Sulprophos Petrol, leaded Tallow nitrile PP Phenarsazine chloride Temephos d- TEPP PP PP 1-Phenylbutane Tetrabromoethane 2-Phenylbutane Tetrabromomethane Phenylcyclohexane 1,1,2,2-Tetrachloroethane Phenylethylene, inhibited Tetrachloroethylene PP Phenylmercuric acetate Tetrachloromethane PP Phenylmercuric compounds, n.o.s. Tetrachlorophenol PP Phenylmercuric hydroxide Tetraethyl dithiopyrophosphate PP Phenylmercuric nitrate PP Tetraethyl lead, liquid 2-Phenylpropene PP n- PP Tetramethyllead Thallium chlorate PP Thallium compounds, n.o.s. PP , white, molten Thallium compounds (pesticides) PP Phosphorus, white or yellow dry or under water or in Thallium nitrate solution Thallium sulfate PP Phosphorus white, or yellow, molten Thallous chlorate PP Phosphorus, yellow, molten 4-Thiapentanal Pindone (and of) Thiocarbonyl tetrachloride alpha-Pinene Triaryl phosphates, isopropylated PP Triaryl phosphates, n.o.s. PP Pirimiphos-ethyl Triazophos PP Polychlorinated biphenyls Tribromomethane PP Polyhalogenated biphenyls, liquid or Terphenyls liq- PP Tributyltin compounds uid Trichlorfon PP Polyhalogenated biphenyls, solid or Terphenyls, Trichlorobenzenes, liquid solid Trichlorobutene PP Potassium cuprocyanide Trichlorobutylene Potassium cyanide, solid Trichloromethane sulphuryl chloride Potassium cyanide, solution Trichloromethyl sulphochloride PP Potassium cyanocuprate (I) Trichloronat PP Potassium cyanomercurate (less than 1% ortho-isomer) PP Potassium mercuric iodide PP Tricresyl phosphate, not less than 1% ortho-isomer but not more than 3% orthoisomer Propachlor PP Tricresyl phosphate with more than 3 per cent ortho Propanethiols isomer Propaphos Triethylbenzene Propenal, inhibited Triisopropylated phenyl phosphates Propionaldehyde 1,2,3-Trimethylbenzene 1,2,4-Trimethylbenzene n-Propylbenzene 1,3,5-Trimethylbenzene Trimethylene dichloride Prussic acid, anhydrous, stabilized PP Triphenylphosphate Prussic acid, anhydrous, stabilized, absorbed in a Triphenyl phosphate/tert-butylated triphenyl porous inert material phosphates mixtures containing 5% to 10% PP Pyrazophos triphenyl phosphates PP Triphenyl phosphate/tert-butylated triphenyl PP Quizalofop phosphates mixtures containing 10% to 48% PP Quizalofop-p-ethyl triphenyl phosphates PP Triphenyltin compounds Salithion Tritolyl phosphate (less than 1% ortho-isomer) Silver arsenite PP Tritolyl phosphate (not less than 1% ortho-isomer) Silver cyanide Trixylenyl phosphate Silver orthoarsenite Turpentine PP Sodium copper cyanide, solid 1-Undecanol normal-Valeraldehyde PP Sodium copper cyanide solution Vinylbenzene, inhibited PP Sodium cuprocyanide, solid Vinylidene chloride, inhibited PP Sodium cuprocyanide, solution Vinyltoluenes, inhibited mixed isomers Sodium cyanide, solid Warfarin (and salts of) Sodium cyanide, solution PP White phosphorus, dry Sodium dinitro-o-cresolate, dry or wetted with less PP White phosphorus, wet than 15 per cent water, by mass White spirit, low (15-20%) aromatic Sodium dinitro-ortho-cresolate, wetted with not less Xylenols than 15 per cent water, by mass PP Yellow phosphorus, dry PP Sodium pentachlorophenate PP Yellow phosphorus, wet or Strychnine salts Zinc bromide monomer, inhibited Zinc cyanide

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[Amdt. 172–127, 57 FR 52935, Nov. 5, 1992] plies only to non-bulk packaging re- EDITORIAL NOTE: For FEDERAL REGISTER ci- quirements. tations affecting appendix B to § 172.101, see (6) A code containing the letter ‘‘R’’ the List of CFR Sections Affected in the refers to a special provision which ap- Finding Aids section of this volume. plies only to transportation by rail. (7) A code containing the letter ‘‘T’’ § 172.102 Special provisions. refers to a special provision which ap- (a) General. When column 7 of the plies only to transportation in IM port- § 172.101 table refers to a special provi- able tanks. sion for a hazardous material, the (8) A code containing the letter ‘‘W’’ meaning and requirements of that pro- refers to a special provision which ap- vision are as set forth in this section. plies only to transportation by water. When a special provision specifies (c) Tables of special provisions. The fol- packaging or packaging require- lowing tables list, and set forth the re- ments— quirements of, the special provisions referred to in column 7 of the § 172.101 (1) The special provision is in addi- table. tion to the standard requirements for (1) Numeric provisions. These provi- all packagings prescribed in § 173.24 of sions are multi-modal and apply to this subchapter and any other applica- bulk and non-bulk packagings: ble packaging requirements in subparts A and B of part 173 of this subchapter; Code/Special Provisions and 1 This material is poisonous by inhalation (2) To the extent a special provision (see § 171.8 of this subchapter) in Hazard imposes limitations or additional re- Zone A (see § 173.116(a) or § 173.133(a) of this quirements on the packaging provi- subchapter), and must be described as an sions set forth in column 8 of the inhalation hazard under the provisions of § 172.101 table, packagings must con- this subchapter. form to the requirements of the special 2 This material is poisonous by inhalation (see § 171.8 of this subchapter) in Hazard provision. Zone B (see § 173.116(a) or § 173.133(a) of this (b) Description of codes for special pro- subchapter), and must be described as an visions. Special provisions contain inhalation hazard under the provisions of packaging provisions, prohibitions, ex- this subchapter. ceptions from requirements for par- 3 This material is poisonous by inhalation ticular quantities or forms of materials (see § 171.8 of this subchapter) in Hazard and requirements or prohibitions appli- Zone C (see § 173.116(a) of this subchapter), and must be described as an inhalation cable to specific modes of transpor- hazard under the provisions of this sub- tation, as follows: chapter. (1) A code consisting only of numbers 4 This material is poisonous by inhalation (for example, ‘‘11’’) is multi-modal in (see § 171.8 of this subchapter) in Hazard application and may apply to bulk and Zone D (see § 173.116(a) of this subchapter), non-bulk packagings. and must be described as an inhalation hazard under the provisions of this sub- (2) A code containing the letter ‘‘A’’ chapter. refers to a special provision which ap- 5 If this material meets the definition for a plies only to transportation by air- material poisonous by inhalation (see craft. § 171.8 of this subchapter), a shipping name (3) A code containing the letter ‘‘B’’ must be selected which identifies the inha- refers to a special provision which ap- lation hazard, in Division 2.3 or Division plies only to bulk packaging require- 6.1, as appropriate. 6 This material is poisonous-by-inhalation ments. Unless otherwise provided in and must be described as an inhalation this subchapter, these special provi- hazard under the provisions of this sub- sions do not apply to IM portable chapter. tanks. 7 An ammonium nitrate fertilizer is a fer- (4) A code containing the letter ‘‘H’’ tilizer formulation, containing 90% or refers to a special provision which ap- more ammonium nitrate and no more than plies only to transportation by high- 0.2% organic combustible material (cal- culated as carbon), which does not meet way. the definition and criteria of a Class 1 (ex- (5) A code containing the letter ‘‘N’’ plosive) material (See § 173.50 of this sub- refers to a special provision which ap- chapter).

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