Warning This Web page has been archived on the Web.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the Contact Us page.

Changes to the National Pollutant Release Inventory (NPRI) Substance List over time

The following tables show the changes that have been made to the NPRI substance list over time. Changes to the substance list result from the NPRI Consultations process and may include the addition, modification or removal of substances as well as changes in the thresholds at which they must be reported. A chronological list of all types of changes made to the NPRI since 1993 is also available, here.

Table of Contents

Substances Added to the NPRI

CAS Number **Substance
2007
New Part 1A substances
NA - M14Total reduced sulphur
New PAHs (Part 2)
226-36-8Dibenzo(a,h)acridine
5385-75-1Dibenzo(a,e)fluoranthene
192-65-4Dibenzo(a,e)pyrene
189-64-0Dibenzo(a,h)pyrene
191-30-0Dibenzo(a,l)pyrene
57-97-67,12-Dimethylbenz(a)anthracene
56-49-53-Methylcholanthrene
3697-24-35-Methylchrysene
5522-43-01-Nitropyrene
2006
3 new Polycyclic Aromatic Hydrocarbons:
83-32-9Acenaphthene
208-96-8Acenaphthylene
86-73-7Fluorene
15 new speciated Volatile Organic Compounds (VOCs):
Individual Substances:
98-00-0Furfuryl alcohol
109-99-9Tetrahydrofuran
Other Groups and Mixtures:
64741-65-7Heavy alkylate naphtha
64742-48-9Hydrotreated heavy naphtha
64742-47-8Hydrotreated light distillate
64742-89-8Solvent naphtha light aliphatic
64742-88-7Solvent naphtha medium aliphatic
8032-32-4VM & P naphtha
8042-47-5White mineral oil
112-34-5Diethylene glycol butyl ether
112-15-2Diethylene glycol ethyl ether acetate
112-07-2Ethylene glycol butyl ether acetate
112-25-4Ethylene glycol hexyl ether
5131-66-8Propylene glycol butyl ether
108-65-6Propylene glycol methyl ether acetate
2003
463-58-1Carbonyl sulphide
*Phosphorous (total)
60 speciated Volatile Organic Compounds (VOCs):
Individual Substances:
74-86-2Acetylene
124-04-9Adipic acid
62-53-3Aniline (and its salts)
71-43-2Benzene
106-99-01,3-Butadiene
111-76-22-Butoxyethanol
123-86-4n-Butyl acetate
108-90-7Chlorobenzene
106-46-7p-Dichlorobenzene
107-06-21,2-Dichloroethane
115-10-6Dimethylether
64-17-5Ethyl alcohol
141-78-6Ethyl acetate
74-85-1Ethylene
50-00-0Formaldehyde
110-54-3n-Hexane
67-63-0Isopropyl alcohol
5989-27-5D-Limonene
67-56-1Methanol
78-93-3Methyl ethyl ketone
7379-12-62-Methyl-3-hexanone
108-10-1Methyl isobutyl ketone
123-35-3Myrcene
555-10-2Beta-Phellandrene
103-71-9Phenyl isocyanate
80-56-8Alpha-Pinene
127-91-3Beta-Pinene
74-98-6Propane
115-07-1Propylene
100-42-5Styrene
95-63-61,2,4-Trimethylbenzene
420-56-4Trimethylfluorosilane
108-88-3Toluene
108-05-4Vinyl acetate
Isomer Groups:
*Anthraquinone (all isomers)
*Butane (all isomers)
25167-67-3Butene (all isomers)
*Cycloheptane (all isomers)
*Cyclohexene (all isomers)
*Cyclooctane (all isomers)
*Decane (all isomers)
*Dihydronapthalene (all isomers)
*Dodecane (all isomers)
*Heptane (all isomers)
*Hexane (all isomers, excluding n-hexane)
25264-93-1Hexene (all isomers)
27133-93-3Methylindan (all isomers)
*Nonane (all isomers)
*Octane (all isomers)
*Pentane (all isomers)
*Pentene (all isomers)
68956-56-9Terpene (all isomers)
25551-13-7Trimethylbenzene (all isomers, excluding 1, 2, 4-trimethylbenzene)
1330-20-7Xylene (all isomers)
Other Groups and Mixtures:
8001-58-9Creosote
64742-94-5Heavy aromatic solvent naphtha
64742-95-6Light aromatic solvent naphtha
64475-85-0Mineral spirits
8030-30-6Naphtha
8052-41-3Stoddard solvent
2002
7 Criteria Air Contaminants (CACs):
630-08-0Carbon monoxide
11104-93-1Oxides of nitrogen
7446-09-5Sulphur dioxide
*Total particulate matter (TPM)
*Particulate Matter less than or equal to 2.5 Microns (PM2.5)
*Particulate Matter less than or equal to 10 Microns (PM10)
*Volatile Organic Compounds (VOCs)
2001
68-12-2N,N-Dimethylformamide
2000
107-02-8Acrolein
140-66-94-tert-octylphenol
37251-96-7Oxirane, methyl-, polymer with oxirane, mono(nonylphenol)ether
9016-87-9Polymeric diphenylmethane diisocyanate (PMDI)
*Polychlorinated dibenzo-p-dioxins (dioxins) and Polychlorinated dibenzofurans (furans)
118-74-1Hexachlorobenzene (HCB)
17 Polycyclic Aromatic Hydrocarbons (PAHs):
56-55-3Benzo(a)anthracene
218-01-9Benzo(a)phenanthrene
50-32-8Benzo(a)pyrene
205-99-2Benzo(b)fluoranthene
192-97-2Benzo(e)pyrene
191-24-2Benzo(g,h,i)perylene
205-82-3Benzo(j)fluoranthene
207-08-9Benzo(k)fluoranthene
224-42-0Dibenz(a,j)acridine
53-70-3Dibenzo(a,h)anthracene
189-55-9Dibenzo(a,i)pyrene
194-59-27H-Dibenzo(c,g)carbazole
206-44-0Fluoranthene
193-39-5Indeno(1,2,3-c,d)pyrene
198-55-0Perylene
85-01-8Phenanthrene
129-00-0Pyrene
1999
630-20-61,1,1,2-Tetrachloroethane
5124-30-11,1-Methylenebis(4-isocyanatocyclohexane)
107-04-01-Bromo-2-chloroethane
104-35-82-(p-Nonylphenoxy)ethanol
16938-22-02,2,4-Trimethylhexamethylene diisocyanate
15646-96-52,4,4-Trimethylhexamethylene diisocyanate
128-37-02,6-Di-t-butyl-4-methylphenol
20427-84-32-[2-(p-Nonylphenoxy)ethoxy]ethanol
7311-27-52-[2-[2-[2-(p-Nonylphenoxy)ethoxy)ethoxy
149-30-42-Mercaptobenzothiazole
109-06-82-Methylpyridine
612-83-93,3'-Dichlorobenzidine dihydrochloride
563-47-33-Chloro-2-methyl-1-propene
542-76-73-Chloropropionitrile
98-86-2Acetophenone
85535-84-8Alkanes, C10-13, chloro
68920-70-7Alkanes, C6-18, chloro
7637-07-2Boron trifluoride
7726-95-6Bromine
353-59-3Bromochlorodifluoromethane (Halon 1211)
75-63-8Bromotrifluoromethane (Halon 1301)
111-76-2Butyl cellosolve
28407-37-6C.I. Direct Blue 218
7789-75-5Calcium fluoride
115-28-6Chlorendic acid
76-15-3Chloropentafluoroethane (CFC-115)
75-72-9Chlorotrifluoromethane
4170-30-3Crotonaldehyde
108-93-0Cyclohexanol
75-71-8Dichlorodifluoromethane (CFC-12)
1717-00-6Dichlorofluoroethane (HCFC-141)
76-14-2Dichlorotetrafluoroethane (CFC-114)
77-73-6Dicyclopentadiene
124-40-3Dimethylamine
1300-71-6Dimethylphenol (mixed isomers)
122-39-4Diphenylamine
28679-13-2Ethoxynonyl benzene
7782-41-4Fluorine
64-18-6Formic acid
41834-16-6HCFC-122 (and all isomers)
34077-87-7HCFC-123 (and all isomers)
63938-10-3HCFC-124 (and all isomers)
70-30-4Hexachlorophene
75-45-6Hydrochlorodifluoromethane (HCFC-22)
7783-06-4Hydrogen sulphide
75-68-3Hydrotrichlorodifluoroethane (HCFC-142B)
13463-40-6Iron pentacarbonyl
4098-71-9Isophorone diisocyanate
78-79-5Isoprene
554-13-2Lithium carbonate
110-54-3n-Hexane
872-50-4n-Methyl pyrrolidone
924-42-5N-Methylolacrylamide
25154-52-3n-Nonylphenol (mixed isomers)
104-40-5Nonylphenol
27177-05-5Nonylphenol hepta(oxyethylene) ethanol
27177-08-8Nonylphenol nona(oxyethylene) ethanol
9016-45-9Nonylphenol polyethylene glycol ether
84852-15-3Nonylphenol, industrial
27986-36-3Nonylphenoxy ethanol
100-01-6p-Nitroaniline
26027-38-3p-Nonylphenol polyethylene glycol ether
123-63-7Paraldehyde
76-01-7Pentachloroethane
7758-01-2Potassium bromate
107-19-7Propargyl alcohol
7681-49-4Sodium fluoride
7632-00-0Sodium nitrite
2551-62-4Sulphur hexafluoride
64-75-5Tetracycline hydrochloride
78-00-2Tetraethyl lead
75-69-4Trichlorofluoromethane (CFC-11)
121-44-8Triethylamine

Modifications to Existing Substances

CAS Number **Original SubstanceNow Listed As
2010
80-05-7p,p'-IsopropylidenediphenolBisphenol A (name change only)
2007
*Dioxins and furans 
1746-01-6 2,3,7,8-Tetrachlorodibenzo-p-dioxin
40321-76-4 1,2,3,7,8-Pentachlorodibenzo-p-dioxin
39227-28-6 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin
19408-74-3 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin
57653-85-7 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin
35822-46-9 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin
3268-87-9 Octachlorodibenzo-p-dioxin
51207-31-9 2,3,7,8-Tetrachlorodibenzofuran
57117-31-4 2,3,4,7,8-Pentachlorodibenzofuran
57117-41-6 1,2,3,7,8-Pentachlorodibenzofuran
70648-26-9 1,2,3,4,7,8-Hexachlorodibenzofuran
72918-21-9 1,2,3,7,8,9-Hexachlorodibenzofuran
57117-44-9 1,2,3,6,7,8-Hexachlorodibenzofuran
60851-34-5 2,3,4,6,7,8-Hexachlorodibenzofuran
67562-39-4 1,2,3,4,6,7,8-Heptachlorodibenzofuran
55673-89-7 1,2,3,4,7,8,9-Heptachlorodibenzofuran
39001-02-0 Octachlorodibenzofuran
2003
*4-tert-octylphenolOctylphenol and its ethoxylates (this group contains 6 ethoxylates)
28679-13-12Ethoxynonyl benzeneNonylphenol and its ethoxylates (this group contains 28 ethoxylates)
104-40-5Nonylphenol
27177-05-5Nonylphenol hepta (oxyethylene) ethanol
84852-15-3Nonylphenol, industrial
27177-08-8Nonylphenol, nona (oxyethylene) ethanol
25154-52-3n-Nonylphenol
9016-45-9Nonylphenol polyethylene glycol ether
26027-38-3p-Nonylphenol polyethylene glycol ether
27986-36-3Nonylphenoxy ethanol
104-35-82-(p-Nonylphenoxy)ethanol
20427-84-32-(2-(p-Nonylphenoxy)ethoxy)ethanol
7311-27-52-(2-(2-(2-(p-Nonylphenoxy)ethoxy)ethoxy)ethoxy)ethanol
37251-69-7Oxirane, methyl-, polymer with oxirane, mono(nonylphenol)ether
2002
*Chromium (and its compounds)Chromium (and its compounds, except for hexavalent chromium)
Hexavalent chromium compounds
2001
108-39-4m-CresolCresol (mixed isomers and their salts)
95-48-7o-Cresol
106-44-5p-Cresol
7440-62-2Vanadium (fume or dust)Vanadium (except when in an alloy) and its compounds
1999
108-38-3m-XyleneXylene (mixed isomers)
95-47-6o-Xylene
106-42-3p-Xylene
1996
*Nitrate ion in solution at a pH of 6.5 or greaterNitrate ion in solution at a pH of 6.0 or greater
1995
79-10-7Acrylic acidAcrylic acid (and its salts)
7664-41-7AmmoniaAmmonia (total)
6484-52-2Ammonium nitrate (solution)
7783-20-3Ammonium sulphate (solution)
1332-21-4AsbestosAsbestos (friable form)
62-53-3AnilineAniline (and its salts)
79-11-8Chloroacetic acidChloroacetic acid (and its salts)
95-80-72,4-Diaminotoluene2,4-Diaminotoluene (and its salts)
120-83-22,4-Dichlorophenol2,4-Dichlorophenol (and its salts)
111-42-2DiethanolamineDiethanolamine (and its salts)
121-69-7N,N-DimethylanilineN,N-Dimethylaniline (and its salts)
534-52-14,6-Dinitro-o-cresol4,6-Dinitro-o-cresol (and its salts)
302-01-2HydrazineHydrazine (and its salts)
123-31-9HydroquinoneHydroquinone (and its salts)
90-94-8Michler's ketoneMichler's ketone (and its salts)
139-13-9Nitrotriacetic acidNitrotriacetic acid (and its salts)
100-02-7p-Nitrophenolp-Nitrophenol (and its salts)
79-21-0Peracetic acidPeracetic acid (and its salts)
108-95-2PhenolPhenol (and its salts)
106-50-3p-Phenylenediaminep-Phenylenediamine (and its salts)
90-43-7o-Phenylphenolo-Phenylphenol (and its salts)
110-86-1PyridinePyridine (and its salts)
91-22-5QuinolineQuinoline (and its salts)
7440-66-6Zinc (fume or dust)Zinc (and its compounds)

Modifications to Reporting Thresholds

CAS Number **SubstanceNew Reporting Threshold
 
2011
*Selenium (and its compounds)
100 kg
2002
*Cadmium (and its compounds)5 kg
*Arsenic (and its compounds)50 kg
*Lead (and its compounds, except tetraethyl lead)50 kg
*Tetraethyl lead50 kg
2000
*Mercury (and its compounds)5 kg

Substances Removed from the NPRI

CAS Number **Substance
2010
2551-62-4Sulphur hexafluoride
2001
7664-38-2Phosphoric acid
1999
67-64-1Acetone

** The Chemical Abstracts Service (CAS) Registry Number is the property of the American Chemical Society and any use or redistribution, except as required in supporting regulatory requirements and/or for reports to the government when the information and the reports are required by law or administrative policy, is not permitted without the prior, written permission of the American Chemical Society.

*Indicates that no single CAS Number applies to this substance.