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A-Z List of Substances

The substances in IRIS are listed in order alphabetically by the substance name. You can click on the Alphabetical letter corresponding to the chemicals beginning with that letter to list the relevant substances, or use your browser's "Find" command to search for a substance name or Chemical Abstracts Service Registry Number (CASRN).

The IRIS Program does not currently develop updated assessments for registered pesticides unless the registered pesticides also have non-pesticide uses. The IRIS user should consult OPP Reregistration Eligibility Decision (RED) documents prepared by the Office of Pesticide Programs for additional health assessment information (see link provided in the OPP Reregistration Eligibility Decision (RED) column below).

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* Refers to the most recent statement of or change to a toxicity value [RfD, RfC, slope factor or unit risk], or most recent significant statement of or change to the basis or justification for the conclusions in the assessment. This column is provided for the convenience of the IRIS user. For specific information, see the Revision History for each substance.

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Displaying 44 Substances:

Substance Name QuickView IRIS Summary Tox Review/
Support Document
Literature Screening Review CASRN Last Significant Revision* OPP Reregistration
Decision (RED)
Malathion QuickView for Malathion IRIS Summary for Malathion Yes 121-75-5 09/30/1987 OPP RED for Malathion (PDF 195 pp, 3.08 M)
Maleic anhydride QuickView for Maleic anhydride IRIS Summary for Maleic anhydride Yes 108-31-6 08/22/1988
Maleic hydrazide QuickView for Maleic hydrazide IRIS Summary for Maleic hydrazide Yes 123-33-1 03/31/1987 OPP RED for Maleic hydrazide (PDF 6 pp, 94 K)
Maneb QuickView for Maneb IRIS Summary for Maneb Yes 12427-38-2 09/07/1988 OPP RED for Maneb (PDF 97 pp, 442 K)
Manganese QuickView for Manganese IRIS Summary for Manganese Yes 7439-96-5 11/01/1995
Mepiquat chloride QuickView for Mepiquat chloride IRIS Summary for Mepiquat chloride Yes 24307-26-4 08/22/1988 OPP RED for Mepiquat chloride (PDF 135 pp, 492 K)
Mercuric chloride (HgCl2) QuickView for Mercuric chloride (HgCl2) IRIS Summary for Mercuric chloride (HgCl2) Yes 7487-94-7 05/01/1995
Mercury, elemental QuickView for Mercury, elemental IRIS Summary for Mercury, elemental Yes 7439-97-6 06/01/1995
Merphos QuickView for Merphos IRIS Summary for Merphos Yes 150-50-5 11/01/1992
Merphos oxide QuickView for Merphos oxide IRIS Summary for Merphos oxide Yes 78-48-8 11/01/1992 OPP RED for Merphos oxide (PDF 122 pp, 811 K)
Metalaxyl QuickView for Metalaxyl IRIS Summary for Metalaxyl Yes 57837-19-1 01/31/1987 OPP RED for Metalaxyl (PDF 335 pp, 1.57 M)
Methacrylonitrile QuickView for Methacrylonitrile IRIS Summary for Methacrylonitrile Yes 126-98-7 09/07/1988
Methamidophos QuickView for Methamidophos IRIS Summary for Methamidophos Yes 10265-92-6 09/30/1987 OPP RED for Methamidophos (PDF 139 pp, 1.17 M)
Methanol QuickView for Methanol IRIS Summary for Methanol Methanol Support Documents 67-56-1 09/30/2013
Methidathion QuickView for Methidathion IRIS Summary for Methidathion 950-37-8 05/01/1989 OPP RED for Methidathion (PDF 158 pp, 1.15 M)
Methomyl QuickView for Methomyl IRIS Summary for Methomyl Yes 16752-77-5 01/31/1987 OPP RED for Methomyl (PDF 266 pp, 855 K)
Methoxychlor QuickView for Methoxychlor IRIS Summary for Methoxychlor Yes 72-43-5 12/01/1993 OPP RED for Methoxychlor (PDF 88 pp, 1.15 M)
2-Methoxyethanol QuickView for 2-Methoxyethanol IRIS Summary for 2-Methoxyethanol Yes 109-86-4 05/01/1991
Methyl acrylate QuickView for Methyl acrylate IRIS Summary for Methyl acrylate Yes 96-33-3 12/01/1990
Methyl chloride QuickView for Methyl chloride IRIS Summary for Methyl chloride Toxicological Review for Methyl chloride (PDF 95 pp, 337 K) Yes 74-87-3 07/17/2001
Methyl chlorocarbonate QuickView for Methyl chlorocarbonate IRIS Summary for Methyl chlorocarbonate 79-22-1 05/01/1989
Methyl ethyl ketone (MEK) QuickView for Methyl ethyl ketone (MEK) IRIS Summary for Methyl ethyl ketone (MEK) Toxicological Review for Methyl ethyl ketone (MEK) (PDF 152 pp, 570 K) 78-93-3 09/26/2003
Methyl iodide QuickView for Methyl iodide IRIS Summary for Methyl iodide 74-88-4 09/01/1992
Methyl isobutyl ketone (MIBK) QuickView for Methyl isobutyl ketone (MIBK) IRIS Summary for Methyl isobutyl ketone (MIBK) Toxicological Review for Methyl isobutyl ketone (MIBK) (PDF 68 pp, 547 K) 108-10-1 04/25/2003
Methyl isocyanate QuickView for Methyl isocyanate IRIS Summary for Methyl isocyanate Yes 624-83-9 03/01/1991
Methyl methacrylate QuickView for Methyl methacrylate IRIS Summary for Methyl methacrylate Toxicological Review for Methyl methacrylate (PDF 83 pp, 275 K) 80-62-6 03/02/1998
Methyl parathion QuickView for Methyl parathion IRIS Summary for Methyl parathion 298-00-0 03/31/1987 OPP RED for Methyl parathion (PDF 88 pp, 990 K)
Methyl tert-butyl ether (MTBE) QuickView for Methyl tert-butyl ether (MTBE) IRIS Summary for Methyl tert-butyl ether (MTBE) 1634-04-4 09/01/1993
4-(2-Methyl-4-chlorophenoxy) butyric acid (MCPB) QuickView for 4-(2-Methyl-4-chlorophenoxy) butyric acid (MCPB) IRIS Summary for 4-(2-Methyl-4-chlorophenoxy) butyric acid (MCPB) Yes 94-81-5 09/26/1988 OPP RED for 4-(2-Methyl-4-chlorophenoxy) butyric acid (MCPB) (PDF 76 pp, 1.26 M)
2-(2-Methyl-4-chlorophenoxy)propionic acid (MCPP) QuickView for 2-(2-Methyl-4-chlorophenoxy)propionic acid (MCPP) IRIS Summary for 2-(2-Methyl-4-chlorophenoxy)propionic acid (MCPP) Yes 93-65-2 01/01/1989 OPP RED for 2-(2-Methyl-4-chlorophenoxy)propionic acid (MCPP) (PDF 92 pp, 1.36 M)
2-Methyl-4-chlorophenoxyacetic acid (MCPA) QuickView for 2-Methyl-4-chlorophenoxyacetic acid (MCPA) IRIS Summary for 2-Methyl-4-chlorophenoxyacetic acid (MCPA) Yes 94-74-6 08/28/1987 OPP RED for 2-Methyl-4-chlorophenoxyacetic acid (MCPA) (PDF 245 pp, 3.72 M)
Methylene Diphenyl Diisocyanate (monomeric MDI) and polymeric MDI (PMDI) QuickView for Methylene Diphenyl Diisocyanate (monomeric MDI) and polymeric MDI (PMDI) IRIS Summary for Methylene Diphenyl Diisocyanate (monomeric MDI) and polymeric MDI (PMDI) Toxicological Review for Methylene Diphenyl Diisocyanate (monomeric MDI) and polymeric MDI (PMDI) (PDF 54 pp, 154 K) Yes 101-68-8 02/07/1998
4,4'-Methylene bis(N,N'-dimethyl)aniline QuickView for 4,4'-Methylene bis(N,N'-dimethyl)aniline IRIS Summary for 4,4'-Methylene bis(N,N'-dimethyl)aniline 101-61-1 08/01/1989
Methylmercury (MeHg) QuickView for Methylmercury (MeHg) IRIS Summary for Methylmercury (MeHg) Methylmercury (MeHg) Support Documents Yes 22967-92-6 07/27/2001
2-Methylnaphthalene QuickView for 2-Methylnaphthalene IRIS Summary for 2-Methylnaphthalene Toxicological Review for 2-Methylnaphthalene (PDF 97 pp, 242 K) 91-57-6 12/22/2003
2-Methylphenol QuickView for 2-Methylphenol IRIS Summary for 2-Methylphenol Yes 95-48-7 04/01/1992
3-Methylphenol QuickView for 3-Methylphenol IRIS Summary for 3-Methylphenol Yes 108-39-4 04/01/1992 OPP RED for 3-Methylphenol (PDF 165 pp, 1.01 M)
4-Methylphenol QuickView for 4-Methylphenol IRIS Summary for 4-Methylphenol Yes 106-44-5 04/01/1992
Metolachlor QuickView for Metolachlor IRIS Summary for Metolachlor 51218-45-2 10/01/1990 OPP RED for Metolachlor (PDF 40 pp, 100 K)
Metribuzin QuickView for Metribuzin IRIS Summary for Metribuzin Yes 21087-64-9 12/01/1993 OPP RED for Metribuzin (PDF 230 pp, 740 K)
Mirex QuickView for Mirex IRIS Summary for Mirex 2385-85-5 10/01/1992
Molinate QuickView for Molinate IRIS Summary for Molinate Yes 2212-67-1 09/26/1988 OPP RED for Molinate (PDF 0 pp, 1.28 M)
Molybdenum QuickView for Molybdenum IRIS Summary for Molybdenum Yes 7439-98-7 11/01/1992
Monochloramine QuickView for Monochloramine IRIS Summary for Monochloramine 10599-90-3 03/01/1994

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