Rhode Island Code of Regulations › Title 250 - Department of Environmental Management › Chapter 120 - Air Resources › Subchapter 05 - Air Pollution Control › Part 22 - Air Pollution Control Regulation No. 22 - Air Toxics › Section 250-RICR-120-05-22.11 - Table III Minimum Quantities

Current through June 14, 2024
Table III Minimum Quantities
								  (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Acetaldehyde
75070
50
Acetamide
60355
5
Acetonitrile
75058
200
Acetophenone
98862
900
2-Acetylaminofluorene
53963
0.09
Acrolein
107028
0.07
Acrylamide
79061
0.09
Acrylic acid
79107
3
Acrylonitrile
107131
1
Aldrin
309002
0.002
Allyl chloride
107051
3
2-Aminoanthraquinone
117793
10
4-Aminobiphenyl
92671
0.02
Ammonia
7664417
300
Aniline
62533
3
o-Anisidine
90040
2
Antimony &
								  compoundsa, including antimony trioxide
0.6
Aramite
140578
10
Arsenic &
								  compoundsa (inorganic)
0.02
Arsine
7784421
0.2
Asbestos
1332214
400b
Azobenzene
103333
3
Barium
7440393
2,000
Benzene
71432
10
Benzidine
92875
0.002
Benzoic acid
65850
30,000
Benzotrichloride
98077
0.03
Benzyl chloride
100447
2
Beryllium &
								  compoundsa
0.04
Biphenyl
92524
600
Bis (chloromethyl) ether
542881
0.002
Bis (2-ethylhexyl) phthalate (DEHP)
117817
40
Boron and borates
4
Bromates (including Potassium bromate)
0.8
Bromine and compounds (except Hydrogen bromide
								  & Bromates)j
200
Bromodichloromethane
75274
3
Bromoform
75252
100
1,3-Butadiene
106990
3
Butyl benzyl phthalate
85687
2,000
Cadmium &
								  compoundsa
0.07
Calcium cyanamide
156627
100
Captan
133062
100
Carbaryl
63252
900
Carbon disulfide
75150
2,000
Carbon tetrachloride
56235
8
Carbonyl sulfide
463581
70
Catechol
120809
500
Chloramben
133904
200
Chlordane
57749
0.1
Chlorinated paraffins (avg length C12- C13, 60%
								  chlorine)
108171262
4
Chlorine
7782505
10
Chlorine dioxide
10049044
9
Chloroacetic acid
79118
10
2-Chloroacetophenone
532274
0.09
4-Chloroaniline
106478
30
Chlorobenzene
108907
20,000
Chlorobenzilate
510156
80
1-Chloro-1,1-difluoroethane (CFC 142B)
75683
36,500
Chlorodifluoromethane (HCFC-22)
75456
36,500
Chloroform
67663
20
Chloromethyl methyl ether
107302
0.1
2-Chlorophenol
95578
60
4-Chloro-o-phenylenediamine
95830
20
Chloropicrin
76062
10
Chloroprene
126998
100
p-chloro-o-toluidine
95692
1
Chromium III &
								  compoundsa, insoluble salts
20,000
Chromium VI &
								  compoundsa
0.009
Cobalt &
								  compoundsa
0.1
Coke oven emissions
8007452
0.2
Copper &
								  compoundsa, except Copper cyanide
40
p-Cresidine
120718
2
Cresols/Cresylic acid isomers and mixtures
								  (Methylphenols)
1319773
20,000
Cumene
98828
1,000
Cupferron
135206
2
Cyanide & compounds
								  (inorganic)ij, except Hydrogen cyanide
100
Cyclohexane
110827
20,000
2,4-Diaminoanisole
615054
20
2,4-Diaminotoluene
95807
0.1
Diazomethane
334883
90
Dibromochloromethane
124481
100
1,2-Dibromo-3-chloropropane
96128
0.05
Dibutylphthalate
84742
700
1,2-Dichlorobenzene
95501
700
1,4-Dichlorobenzene (p-Dichlorobenzene)
106467
10
3,3'-Dichlorobenzidene
91941
0.3
Dichloro diphenyl dichloroethylene (DDE)
3547044
1
cis- 1,2-Dichloroethene
156592
1,000
trans- 1,2-Dichloroethene
156605
300
Dichloroethyl ether (Bis (chloroethyl)
								  ether)
111444
0.3
2,4-Dichlorophenoxyacetic acid, salts &
								  esters (2,4-D)
94757
90
1,3-Dichloropropene
542756
20
Dichlorvos
62737
1
Dieldrin
60571
0.02
Diethanolamine
111422
300
Diethyl sulfate
64675
0.3
1,1-Difluoroethane (HCFC 152a)
75376
36,500
3,3'-Dimethoxybenzidine
119904
0.09
p-Dimethyl aminoazobenzene
60177
0.09
n,n-Dimethyl aniline
121697
20
3,3'-Dimethyl benzidine
119937
0.002
Dimethyl carbamoyl chloride
79447
0.03
Dimethyl formamide
68122
3,000
1,1-Dimethyl hyrazine
57147
0.1
1,2-Dimethyl hyrazine
540738
0.0007
2,4-Dimethylphenol
105679
200
Dimethyl phthalate
131113
1,000
Dimethyl sulfate
77781
0.02
4,6-Dinitro-o-cresol
534521
4
2,4-Dinitrophenol
51285
10
2,4-Dinitrotoluene
121142
1
1,4-Dioxane (1,4-Diethyleneoxide)
123911
10
1,2-Diphenylhydrazine (Hydrazobenzene)
122667
0.5
Epichlorohydrin
106898
90
1,2-Epoxybutane
106887
200
Ethyl acrylate
140885
50
Ethyl benzene
100414
9,000
Ethyl carbamate (Urethane)
51796
0.3
Ethyl chloride (Chloroethane)
75003
10,000
Ethylene dibromide (Dibromoethane)
106934
0.2
Ethylene dichloride (1,2-Dichloroethane)
107062
4
Ethylene glycol
107211
700
Ethylene glycol monobutyl ether
111762
4,000
Ethylene glycol monoethyl ether
110805
100
Ethylene glycol monoethyl ether acetate
111159
40
Ethylene glycol monomethyl ether
109864
30
Ethylene glycol monomethyl ether acetate
110496
10,000
Ethylene imine (Aziridine)
151564
0.005
Ethylene oxide
75218
1
Ethylene thiourea
96457
9
Ethylidene dichloride (1,1-Dichloroethane)
75343
70
Fluorides &
								  compoundsj, including Hydrogen fluoride
7
Formaldehyde
50000
9
Glutaraldehyde
111308
9
Heptachlor
76448
0.009
Hexachlorobenzene
118741
0.02
Hexachlorobutadiene
87683
2
Hexachlorocyclohexanes, technical grade &
								  mixed isomers
608731
0.2
alpha-Hexachlorocyclohexane
319846
0.07
beta-Hexachlorocyclohexane
319857
0.2
gamma-Hexachlorocyclohexane (Lindane)
58899
0.1
Hexachlorocyclopentadiene
77474
20
Hexachloroethane
67721
30
Hexamethylene-1,6-diisocyanate
822060
0.6
Hexamethylphosphoramide
680319
0.005
Hexane
110543
20,000
Hydrazine
302012
0.02
Hydrochloric acid (Hydrogen chloride)
7647010
700
Hydrogen bromide
10035106
2,000
Hydrogen cyanide
74908
100
Hydrogen sulfide
7783064
10
Hydroquinone
123319
500
Isophorone
78591
2,000
Isopropanol
67630
1,000
Lead & compoundsa,
								  inorganic
0.9
Lead - tetraethyl lead
78002
0.0009
Maleic anhydride
108316
4
Manganese &
								  compoundsa
0.2
Mercury &
								  compoundsa - elemental & inorganic
0.7
Mercury - Methyl mercury
22967926
0. 3
Methanol
67561
10,000
Methoxychlor
72435
60
Methyl bromide (Bromomethane)
74839
70
Methyl chloride (Chloromethane)
74873
400
Methyl chloroform (1,1,1-Trichloroethane)
71556
3,000
4,4-Methylene bis (2-chloroaniline)
101144
0.2
Methylene chloride (Dichloromethane)
75092
200
4,4-Methylenedianiline
101779
0.2
Methylene diphenyl diisocyanate
101688
70
Methyl ethyl ketone (2-Butanone)
78933
4,000
Methyl hydrazine
60344
0.04
Methyl iodide (Iodomethane)
74884
3,000
Methyl isobutyl ketone (Hexanone)
108101
9,000
Methyl isocyanate
624839
100
Methyl methacrylate
80626
2,000
Methyl tert butyl ether (MTBE)
1634044
3,000
Michler's ketone (4,4'-Bis (dimethylamino)
								  benzophenone)
90948
0.4
Fine mineral
								  fibersc
2,000
Molybdenum and
								  compoundsa
60
Naphthalene
91203
3
Nickel and compoundsa,
								  except Nickel subsulfide
0.4
Nickel subsulfide
12035722
0.2
Nitric acid
7697372
30
Nitrobenzene
98953
200
4-Nitrobiphenyl
92933
0.002
4-Nitrophenol
100027
10
2-Nitropropane
79469
10
N-Nitrosodi-n-butylamine
924163
0.07
N-Nitrosodiethylamine
55185
0.002
N-Nitrosodimethylamine
62759
0.008
N-Nitrosodiphenylamine
86306
40
N-Nitrosdi-n-propylamine
621647
0.05
N-Nitroso-n-methylethylamine
10595956
0.02
N-Nitroso-n-methylurea
684935
0.003
N-Nitrosomorpholine
59892
0.05
N-Nitrosopiperidine
100754
0.04
N-Nitrosopyrrolidine
930552
0.2
Parathion
56382
10
Pentachloronitrobenzene (Quintozene)
82688
30
Pentachlorophenol
87865
7
Phenol
108952
30
p-Phenylenediamine
106503
20
Phosgene
75445
0.9
Phosphine
7803512
30
Phosphoric acid
7664382
800
Phosphorus, white
7723140
0.2
Phthalic anhydride
85449
2,000
Polychlorinated biphenyls (PCBs), except Aroclor
								  1254
1336363
0.1
PCBs- Aroclor 1254
11097691
0.2
Polychlorinated dibenzo dioxins (PCDDs),
								  polychlorinated dibenzo furans (PCDFs) and dioxin-like polychlorinated
								  biphenyls (PCBs)
3 X 10-7d
Polycyclic Organic Matter
0.01e
1,3-Propane sultone
1120714
0.1
beta-Propiolactone
57578
0.02
Propionaldehyde
123386
20
Propoxur (Baygon)
114261
10
n-Propyl bromide (1-Bromopropane)
106945
10,000
Propylene
115071
36,500
Propylene dichloride (1,2-Dichloropropane)
78875
10
Propylene glycol monomethyl ether (PGME)
107982
36,500
Propylene oxide
75569
30
1,2-Propylenimine (2-Methyl aziridine)
75558
0.01
Quinoline
91225
0.1
Quinone
106514
100
Selenium &
								  compoundsa except Hydrogen selenide and
7782492
2,000
Selenium sulfide
Selenium - Hydrogen selenide
2
Selenium sulfide
7446346
20
Sodium hydroxide
1310732
3
Styrene
100425
3,000
Styrene oxide
96093
2
Sulfatesf
40
Sulfuric acid and
								  Oleumg
40
1,1,1,2-Tetrachloroethane
630206
300
1,1,2,2-Tetrachloroethane
79345
6,000
Tetrachloroethylene (Perchloroethylene)
127184
20
Tetrachlorophenols
25167833
10,000
1,1,1,2-Tetrafluoroethane
811972
36,500
Thioacetamide
62555
0.07
Titanium tetrachloride
7550450
10
Toluene
108883
1,000
2,4-Toluene diamine (2,4-Diaminotoluene)
95807
0.1
2,4-and 2,6-Toluene
								  diisocyanateh
26471625
8
o-Toluidine
95534
2
Toxaphene (Chlorinated camphene)
8001352
0.03
1,2,4-Trichlorobenzene
120821
90
1,1,2-Trichloroethane
79005
30
Trichloroethylene
79016
50
Trichlorofluoromethane
75694
3,000
2,4,5-Trichlorophenol
95954
900
2,4,6-Trichlorophenol
88062
30
Triethylamine
121448
800
Trifluralin
1582098
90
2,2,4-Trimethylpentane
540841
20,000
Vanadium and
								  compoundsa
0.07
Vinyl acetate
108054
600
Vinyl bromide
593602
0.5
Vinyl chloride
75014
20
Vinylidene chloride (1,1-Dichloroethylene)
75354
600
Xylenes, isomers and mixtures
1330207
3,000
Zinc and
								  compoundsa
3,000
aFor metal compounds,
								  Minimum Quantities apply to the metal portion of the compound.
bAsbestos units are
								  fibers/year.
cFine mineral fibers
								  are mineral fiber emissions from facilities manufacturing or processing glass,
								  rock, or slag fibers or other mineral derived fibers, average diameter 1
								  micrometer (µm) or less.
dPCDD Minimum Quantity
								  is in terms of 2,3,7,8-tetrachlorodibenzodioxin equivalents, calculated as
								  specified in the Rhode Island Air Toxics Guideline.
ePolycyclic Organic
								  Matter Minimum Quantity is in terms of benzo(a)pyrene equivalents, calculated
								  as specified in the Rhode Island Air Toxics Guideline.
fSulfates MQ applies
								  to ammonium bisulfate [(NH4)HSO4,
								  CAS 7803-63-6], ammonium sulfate
								  [(NH4)2SO4,
								  CAS 7783-20-2], ferric sulfate
								  [Fe(SO4)3, CAS 10028-22-5] and
								  sodium sulfate [Na2SO4, CAS
								  7757-82-6]
gSulfuric acid and
								  oleum MQ applies to sulfuric acid
								  (H2SO4, CAS 7664-03-9), sulfur
								  trioxide (SO3, CAS 7446-71-9) and oleum
								  (H2SO4 +
								  SO3, CAS 8014-95-7)
hIncludes 2,4-TDI (CAS
								  584849), 2,6-TDI (CAS 91087) and 2,4/2,6 mixtures (CAS 26471625)
iXCN where X equals
								  any group other than H where a formal dissociation may occur, such as KCN or
								  Ca(CN)2.
j For bromine, cyanide
								  and fluoride compounds, MQs apply to the bromine, cyanide or fluoride portion
								  of the compound