75-07-0 Acetaldehyde

107-02-8

107-13-1

814-68-6

Various

107-18-6

107-05-1

107-11-9

7664-41-7

Acrolein [2-Propenal]

Acrylonitrile[ 2 -Propenenitrile ]

Acrylyl chloride[2-Propenoyl chloride]

Alkylaluminums

Allyl alcohol[2-Propen-l-ol]

Allyl chloride

Allylamine[2-Propen-l-amine]

Ammonia [anhydrous]

Appendix D

Comparison of OSHA and EPA Listsof Highly Hazardous Chemicals and

Regulated Substances

T

T,R

T

R

T

T

T

(b)

(b)

(b)

(b)

(b)

(a,b)

7664-41-7

7664-41-7

7790-98-9

7787-36-2

7784-34-1

7784-42-1

10294-34-5

7637-07-2

353-42-4

7726-95-6

13863-41-7

7789-30-2

7787-71-5

106-96-7

75-91-2

614-45-9

75-15-0

353-50-4

Ammonia solutions(44% ammonia orgreater by wt)

Ammonia solutions(20% or greater by wt)

Ammonium perchlorate

Ammoniumpermanganate

Arsenous trichloride

Ar sine [Arsenic hydride]

Boron trichloride[Borane, trichloro-]

Boron trifluoride[Borane, trifluoro-1

Boron trifluoride withMethyl ether (1:1)[Boron, trifluoro[oxybis[metane]]-, T-4-

Bromine

Bromine chloride

Bromine pentafluoride

Bromine trifluoride

Bromopropyne, 3 -[Propargyl bromide]

Butyl hydroperoxide(tertiary)

Butyl perbenzoate(tertiary)

Carbon disulfide

Carbonyl fluoride

T

R

R

T

T

T

(b)

(b)

(b)

(b)

(b)

(a,b)T

T

T

R

R

R

R

T

(b)

9004-70-0

7782-50-5

10049-04-4

13637-63-3

7790-91-2

67-66-3

542-88-1

107-30-2

76-06-2

NONE

NONE

4170-30-3

123-73-9

80-15-9

460-19-5

506-77-4

675-14-9

Cellulose nitrate (cone.> 12.6% nitrogen)

Chlorine

Chlorine dioxide[Chlorine oxide (ClO2)]

Chlorine pentafluoride

Chlorine trifluoride

Chloroform [Methane,trichloro-]

Chloromethyl ether[Methane,oxybis[chloro-]]

Chloromethyl methylether [Methane,chloromethoxy- ]

Chloropicrin

Chloropicrin and methylbromide mixture

Chloropicrin and methylchloride mixture

Crotonaldehyde[2-Butenal]

Crotonaldehyde, (E)-[2-butenal, (E)-]

Cumene hydroperoxide

Cyanogen

Cyanogen chloride

Cyanuric fluoride

R

T

T

T

T,R

(a,b)

(c)

T

T

T, R

T,R

T,R

(b)

(b)

(b)

(b)

(b)

R

T

T

T

108-91-8 Cyclohexylamine[ Cyclohexanamine ]

110-22-5

334-88-3

94-36-0

19287-45-7

110-05-4

7572-29-4

4109-96-0

557-20-0

96-10-6

105-64-6

105-74-8

124-40-3

75-78-5

57-14-7

97-02-9

97-00-7

Diacetyl peroxide (cone.> 70%)

Diazomethane

Dibenzoyl peroxide

Diborane

Dibutyl peroxide(tertiary)

Dichloroacetylene

Dichlorosilane

Diethyl zinc

Diethylaluminumchloride[ chlorodiethylaluminum ]

Diisopropylperoxydicarbonate

Dilauroyl peroxide

Dimethylamine[anhydrous]

Dimethyldichlorosilane[Silane,dichlorodimethy 1- ]

Dimethylhydrazine,I7I- [Hydrazine,1,1 -dimethyl-]

Dinitr oaniline, 2,4-

Dinitrochlorobenzene[ 1 -chloro-2,4-dinitrobenzene]

(b)

R

T

R

T,R

R

T

T

R

R

R

R

T

T

T

R

R

(b)

(b)

106-89-8 Epichlorohydrin[Oxirane,(chloromethyl)-]

109-95-5

75-04-7

371-62-0

75-21-8

107-15-3

151-56-4

7782-41-4

50-00-0

50-00-0

110-00-9

684-16-2

302-01-2

7647-01-0

74-90-8

Ethyl nitrite

Ethylamine

Ethylene fluorohydrin

Ethylene oxide [Oxirane]

Ethylenediamine[ 1 ,2-Ethanediamine]

Ethyleneimine[Aziridine]

Fluorine

Formaldehyde (solution,concentration notspecified)

Formaldehyde[Formalin] (37% orgreater by wt, per7/28/92 OSHAinterpretation letter)

Furan

Hexafluoroacetone

Hydrazine

Hydrochloric acid (37%or greater by wt) (7)

Hydrocyanic acid[Hydrogen cyanide(anhydrous)]

T,R

T

T

T,R

(b)

fob)

(b)

(b)T,R

T,R

T

T

T

(b)

(b)

(d)

fob)

10035-10-6 Hydrogen bromide(anhydrous)

7647-01-0

7664-39-3

7664-39-3

7722-84-1

7783-07-5

7783-06-4

7803-49-8

13463-40-6

78-82-0

108-23-6

75-31-0

463-51-4

78-85-3

126-98-7

Hydrogen chloride[Hydrochloric acid,anhydrous]

Hydrogen fluoride/Hydrofluoric acid (50%or greater by weight)

Hydrogen fluoride[Hydrofluoric acid(anhydrous)]

Hydrogen peroxide (52%or greater by wt)

Hydrogen selenide

Hydrogen sulfide

Hydroxylamine

Iron, pentacarbonyl-[[Iron carbonyl(Fe(CO)5UTB-S-Il)-]

Isobutyronitrile[Propanenitrile,2-methyl-]

Isopropyl chloroformate[Carbonochloridic acid,methylethyl ester]

Isopropylamine

Ketene

Methacrylaldehyde

Methacrylonitrile[ 2 -Propenenitrile,2-methyl-]

T

T

T

R

T

T

R

T

(a)

(a,b)

(b)

(a,b)

(b)

(b)

(b)

T

T

T

T (b)

920-46-7 Methacryloyl chloride

30674-80-7

74-83-9

74-87-3

79-22-1

1338-23-4

453-18-9

421-20-5

60-34-4

74-88-4

624-83-9

74-93-1

556-64-9

79-84-4

74-89-5

75-79-6

13463-39-3

Methacryloyloxyethylisocyanate

Methyl bromide

Methyl chloride[methane, chloro-]

Methyl chloroformate[Carbonochloridic acid,methyl ester]

Methyl ethyl ketoneperoxide (60% or greaterby wt)

Methyl fluoroacetate

Methyl fluorosulfate

Methyl hydrazine[Hydrazine, methyl-]

Methyl iodide

Methyl isocyanate[Methane, -isocyanato-]

Methyl mercaptan[Methanethiol]

Methyl thiocyanate[Thyocyanic acid,methyl ester]

Methyl vinyl ketone

Methylamine(anhydrous)

Methyltrichlorosilane[Silane,trichloromethyl- ]

Nickel carbonyl [Nickeltetracarbonyl]

T

T

T

T

T

R

T

T

T

T

T

T

(a)

(b)

(b)

(a,b)

(b)

(b)

T

T

T (b)

7697-37-2

7697-37-2

10102-43-9

100-01-6

10102-44-0

10544-72-6

7783-54-2

10544-73-7

75-52-5

8014-95-7

8014-95-7

20816-12-0

7783-41-7

10028-15-6

19624-22-7

79-21-0

Nitric acid (80 % orgreater by wt)

Nitric acid (94.5 % orgreater by wt)

Nitric oxide [Nitrogenoxide (NO)]

Nitroaniline( Paranitroaniline)

Nitrogen oxides(NO2/N204/ N2O3)

Nitrogen tetroxide(Nitrogen peroxide)

Nitrogen trifluoride

Nitrogen trioxide

Nitromethane

Oleum (65% SO3 orgreater by wt, per6/24/93OSHAinterpretation letter)

Oleum (Fuming sulfuricacid) [Sulfuric acid,mixture with sulfurtrioxide]

Osmium tetroxide

Oxygen difluoride[Fluorine monoxide]

Ozone

Pentaborane

Per acetic acid (60% orgreater by wt)[ Per oxy acetic acid]

T

T

R

T

T

T

T

R

T

T

T

T

T

T,R

79-21-0

7601-90-3

594-42-3

7616-94-6

75-44-5

7803-51-2

10025-87-3

7719-12-2

110-89-4

107-12-0

109-61-5

627-13-4

75-56-9

75-55-8

107-44-8

7783-79-1

7803-52-3

Peracetic acid(concentration notspecified)[Ethaneperoxoic acid]

Perchloric acid (60% orgreater by wt)

Perchloromethylmercaptan [Methanesulfenylchloride, thrichloro-]

Perchloryl fluoride

Phosgene [carbonicdichloride, carbonylchloride]

Phosphine [Hydrogenphosphide]

Phosphorus oxychloride[Phosphoryl chloride]

Phosphorus trichloride

Piperidine

Propionitrile(propanenitrile]

Propyl chloroformate[Carbonochloridic acid,propylester]

Propyl nitrate

Propylene oxide[Oxirane, methyl-]

Propyleneimine[Aziridine, 2-methyl-]

Sarin

Selenium hexafluoride

Stibine [Antimonyhydride]

R

T

T

T

T

T

T

(b)

(a,b)

(b)

(b)

(b)

(b)

(b)

(b)

R

(b)

(b)

T

T

T

7446-09-5 Sulfur dioxide(anhydrous)

5714-22-7

7783-60-0

7446-11-9

7783-80-4

116-14-3

10036-47-2

75-74-1

509-14-8

7719-09-7

7550-45-0

584-84-9

91-08-7

26471-62-5

1558-25-4

Sulfur pentafluoride

Sulfur tetrafluoride[Sulfur fluoride (SF4),(T-4)-l

Sulfur trioxide [SuIf uricanhydride]

Tellurium hexafluoride

Tetrafluoroethylene

Tetrafluorohydrazine

Tetramethyl lead[Plumbane,tetramethyl-1

Tetranitromethane[Methane, tetranitro-]

Thionyl chloride

Titanium tetrachloride[Titanium chloride(TiCl4) (T-4)-]

Toluene 2,4-diisocyanate[Benzene, 2,4-diiso-cyanato- 1 -methyl- ]

Toluene 2,6-diisocyanate[benzene, 1,3-diiso-cyanato-2 -methyl- ]

Toluene diisocyanate(unspecified isomer)[Benzene,1 , 3 -diisocy anatomethy 1- ]

Trichloro(chloro methyl)silane

T

T

T

T

T

T7R

T

T

(b)

(a,b)

(b)

(b)

T

(b)

(a)<5)

(a)<5)

(a)< 5 )

T

2 1 73 7-85-5 Trichloro(dichloro-phenyl)silane

10025-78-2

79-38-9

75-77-4

2487-90-3

108-05-4

Trichlorosilane

Trifluorochloroethylene

Trimethylchlorosilane[Silane, chlorotrimethyl-]

Trimethyoxysilane

Vinyl acetate monomer[Acetic acid ethenylester]

75-07-0 Acetaldehyde

74-86-2

598-73-2

106-99-0

106-97-8

25167-67-3

106-98-9

107-01-7

590-18-1

624-64-6

Acetylene [Ethyne]

Bromotrifluorethylene [Ethene,bromotrifluoro-]

Butadiene, 1,3-

Butane

Butene

Butene, 1-

Butene, 2-

Butene-ds, 2-

Butene-trans, 2- [2-Butene, (E)]

T

T

T

(g)

(f)

(f)

(f)

(f)

(f)

(f)

(f)

(f)

(f)

463-58-1 Carbon oxysulfide [Carbonoxide sulfide (COS)]

7791-21-1

590-21-6

557-98-2

460-19-5

75-19-4

4109-96-0

75-37-6

124-40-3

463-82-1

74_84-0

107-00-6

75-00-3

60-29-7

75-08-1

109-95-5

75_04-7

74-85-1

1333-74-0

75-28-5

78-78-4

Chlorine monoxide [Chlorineoxide]

Chloropropylene, 1-[1-propene, 1-chloro-]

Chloropropylene, 2-[1-propene, 2-chloro-]

Cyanogen [ Ethanedinitrile ]

Cyclopropane

Dichlorosilane [Silane,dichloro-]

Difluoroethane [Ethane,1,1-difluoro-]

Dimethylamine [Methanamine,n-methyl-]

Dimethy !propane, 2,2-[Propane, 2, 2 -dimethyl-]

Ethane

Ethyl acetylene [1-Butyne]

Ethyl chloride [Ethane, chloro-]

Ethyl ether [ethane,l,l'-oxybis-]

Ethyl mercaptan [Ethanethiol]

Ethyl nitrite [Nitrous acid,ethylester]

Ethylamine [Ethanamine]

Ethylene [Ethene]

Hydrogen

Isobutane [Propane, 2-methyl]

Isopentane [Butane, 2-methyl-]

(f)

(f)

(g)

(g)

(f)(f)(f)

(f)

(f)

(f)

(f)(f)(f)(g)

(g)(f)

(f)(f)(f)(f)(g)

78-79-5

75-29-6

75-31-0

74-82-8

563-45-1

563-46-2

115-10-6

107-31-3

74-89-5

115-11-7

504-60-9

109-66-0

646-04-8

627-20-3

109-67-1

463-49-0

74-98-6

115-07-1

74-99-7

7803-62-5

116-14-3

75-76-3

Isoprene [1,3 -Butadiene,2-methyl-]

Isopropyl chloride[ Propane, 2 -chlor o- ]

Isopropylamine[ 2 -Propanamine ]

Methane

Methyl- 1-butene, 3-

Methyl-1-butene, 2-

Methyl ether [methane,oxybis-]

Methyl formate [Formic acid,methyl ester]

Methylamine [Methanamine]

Methylpropene, 2- [1-Propene,2-methyl- ]

Pentadiene 1,3-

Pentane

Pentene (E)-, 2-

Pentene, (Z)-, 2-

Pentene, 1-

Propadiene [ 1 , 2-Propadiene]

Propane

Propylene [1-Propene]

Propyne [1-Propyne]

Silane

Tetrafluoroethylene [Ethene,tetrafluoro-]

Tetramethylsilane [Silane,tetramethyl-]

(g)

(g)

(g)

(f)(f)(g)(f)

(g)

(f)(f)

(f)(g)(g)(g)(g)(f)(f)(f)(f)(f)(f)

(g)

10025-78-2

79-38-9

75-50-3

689-97-4

75-01-4

109-92-2

75-02-5

107-25-5

75-35-4

75-38-7

Trichlorosilane [Silane,trichloro-]

Trifluorochloroethylene[Ethene, chlorotrifluoro-]

Trimethylamine

[Methanamine, N,N-dimethyl-]

Vinyl acetylene[l-Buten-3-yne]

Vinyl chloride [Ethene, chloro-]

Vinyl ethyl ether [Ethene,ethoxy-]

Vinyl fluoride [Ethene, fluoro-]

Vinyl methyl ether [Ethene,methoxy-J

Vinylidene chloride [Ethene,1,1-dichloro-]

Vinylidene fluoride [Ethene,1,1-difluoro-]

(g)

(f)

(f)

(f)

(a,f)

(g)

(f)

(f)

(g)

(f)

Notes:

EPA regulated toxic substances while OSHA regulated both toxic andreactive substances (those having an NFPA 49 reactivity ratings of 3 or 4).While OSHA did not delineate which substances were regulated for whichproperty (toxicity or reactivity), reasonable inference can be made fromparallels between the OSHA list and the list of substances regulated underDelaware's Extremely Hazardous Substances Risk Managementregulations. This has been indicated above with a "T" for toxic and an "R"for reactive in the OSHA Listing Basis column.

The specific bases for listing of EPA substances are indicated via thefollowing footnotes:

(a) Mandated for listing by Congress.

(b) On EHS list, vapor pressure 10 mm Hg or greater.

(c) Toxic gas.

Notes (continued)

(d) Toxicity of hydrogen chloride, potential to release hydrogenchloride, and history of accidents.

(e) Toxicity of sulfur trioxide, potential to release sulfur trioxide, andhistory of accidents.

(f) Flammable gas.

(g) Volatile flammable liquid.

Other footnotes:(1) OSHA generally covers only commercial strengths of chemicals;dilutions of these chemicals (except for those specifically listed as solutions)are not covered. Where the listed HHC is a solution (at or above a specifiedminimum concentration), the total weight of the solution is the quantitythat is compared to the Td.(2) EPA Td7S for toxics are, with the exception of oleum, intended to beapplied to the mass of the regulated chemical at whatever concentration itexists in the process; for example, if the Tdis 10,000 lbs, it pertains to10,000 lbs of the molecules of the regulated chemical. However, see theexclusion for solutions at concentrations of < 1 wt% or with partialpressure < 10 mm Hg, per § 68.115(b)(l).

The single exception to the above "rule" is oleum; since there is no"oleum molecule" the Tdof 10,000 lbs applies to the total amount ofsolution, regardless of concentration.(3) EPA has established separate Tds for anhydrous ammonia and forammonia in solutions; and for anhydrous hydrogen chloride andhydrochloric acid solutions. In each case, the Tdpertains to the pounds ofregulated substance, not the pounds of solution. Note that the solutions arenot regulated unless the concentration is equal to or greater than20 weight percent for ammonia or 37 weight percent for hydrochloric acid.(4) Methyl chloride is the only substance for which the EPA thresholdquantity is smaller than the OSHA threshold quantity.(5) The mixture exemption in §68.115(b)(l) does not apply to thissubstance(6) These substances, while not specifically listed by OSHA, would becovered by OSHA as flammables.(7) EPA increased the solution concentration cut-off from 30 to 37% in aFinal Rule issued 8/25/97.(8) See §68.115(b)(2), as revised by the 1/6/98 Final Rule, for EPA'shandling of Tds for flammable mixtures.