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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 30 Substances:

Substance Name QuickView IRIS Summary Tox Review/
Support Document
Literature Screening Review CASRN Last Significant Revision* OPP Reregistration
Decision (RED)
Haloxyfop-methyl QuickView for Haloxyfop-methyl IRIS Summary for Haloxyfop-methyl Yes 69806-40-2 05/01/1990
Harmony QuickView for Harmony IRIS Summary for Harmony Yes 79277-27-3 09/26/1988
Heptachlor QuickView for Heptachlor IRIS Summary for Heptachlor Yes 76-44-8 09/30/1987 OPP RED for Heptachlor (PDF 82 pp, 2.93 M)
Heptachlor epoxide QuickView for Heptachlor epoxide IRIS Summary for Heptachlor epoxide Yes 1024-57-3 09/30/1987
n-Heptane QuickView for n-Heptane IRIS Summary for n-Heptane Yes 142-82-5 01/01/1993
Hexabromobenzene QuickView for Hexabromobenzene IRIS Summary for Hexabromobenzene 87-82-1 03/31/1987
Hexabromodiphenyl ether QuickView for Hexabromodiphenyl ether IRIS Summary for Hexabromodiphenyl ether Yes 36483-60-0 08/01/1990
2,2',4,4',5,5'-Hexabromodiphenyl ether (BDE-153) QuickView for 2,2',4,4',5,5'-Hexabromodiphenyl ether (BDE-153) IRIS Summary for 2,2',4,4',5,5'-Hexabromodiphenyl ether (BDE-153) Toxicological Review for 2,2',4,4',5,5'-Hexabromodiphenyl ether (BDE-153) (PDF 66 pp, 301 K) 68631-49-2 06/30/2008
Hexachlorobenzene QuickView for Hexachlorobenzene IRIS Summary for Hexachlorobenzene Yes 118-74-1 03/01/1991
Hexachlorobutadiene QuickView for Hexachlorobutadiene IRIS Summary for Hexachlorobutadiene 87-68-3 05/01/1993
alpha-Hexachlorocyclohexane (alpha-HCH) QuickView for alpha-Hexachlorocyclohexane (alpha-HCH) IRIS Summary for alpha-Hexachlorocyclohexane (alpha-HCH) Yes 319-84-6 03/31/1987
beta-Hexachlorocyclohexane (beta-HCH) QuickView for beta-Hexachlorocyclohexane (beta-HCH) IRIS Summary for beta-Hexachlorocyclohexane (beta-HCH) Yes 319-85-7 09/30/1987
delta-Hexachlorocyclohexane (delta-HCH) QuickView for delta-Hexachlorocyclohexane (delta-HCH) IRIS Summary for delta-Hexachlorocyclohexane (delta-HCH) Yes 319-86-8 03/31/1987
epsilon-Hexachlorocyclohexane (epsilon-HC) QuickView for epsilon-Hexachlorocyclohexane (epsilon-HC) IRIS Summary for epsilon-Hexachlorocyclohexane (epsilon-HC) Yes 6108-10-7 03/31/1987
gamma-Hexachlorocyclohexane (gamma-HCH) QuickView for gamma-Hexachlorocyclohexane (gamma-HCH) IRIS Summary for gamma-Hexachlorocyclohexane (gamma-HCH) 58-89-9 01/31/1987 OPP RED for gamma-Hexachlorocyclohexane (gamma-HCH) (PDF 20 pp, 2.26 M)
technical Hexachlorocyclohexane (t-HCH) QuickView for technical Hexachlorocyclohexane (t-HCH) IRIS Summary for technical Hexachlorocyclohexane (t-HCH) Yes 608-73-1 03/31/1987
Hexachlorocyclopentadiene (HCCPD) QuickView for Hexachlorocyclopentadiene (HCCPD) IRIS Summary for Hexachlorocyclopentadiene (HCCPD) Toxicological Review for Hexachlorocyclopentadiene (HCCPD) (PDF 60 pp, 237 K) Yes 77-47-4 07/05/2001
Hexachlorodibenzo-p-dioxin (HxCDD), mixture of 1,2,3,6,7,8-HxCDD and 1,2,3,7,8,9-HxCDD QuickView for Hexachlorodibenzo-p-dioxin (HxCDD), mixture of 1,2,3,6,7,8-HxCDD and 1,2,3,7,8,9-HxCDD IRIS Summary for Hexachlorodibenzo-p-dioxin (HxCDD), mixture of 1,2,3,6,7,8-HxCDD and 1,2,3,7,8,9-HxCDD Yes 57653-85-7 03/31/1987
Hexachloroethane QuickView for Hexachloroethane IRIS Summary for Hexachloroethane Toxicological Review for Hexachloroethane (PDF 200 pp, 1.61 M) Yes 67-72-1 09/23/2011
Hexachlorophene QuickView for Hexachlorophene IRIS Summary for Hexachlorophene Yes 70-30-4 08/22/1988
Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) QuickView for Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) IRIS Summary for Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) 121-82-4 08/01/1990
1,6-Hexamethylene diisocyanate QuickView for 1,6-Hexamethylene diisocyanate IRIS Summary for 1,6-Hexamethylene diisocyanate Yes 822-06-0 09/01/1994
n-Hexane QuickView for n-Hexane IRIS Summary for n-Hexane Toxicological Review for n-Hexane (PDF 210 pp, 1.40 M) Yes 110-54-3 12/23/2005
2-Hexanone QuickView for 2-Hexanone IRIS Summary for 2-Hexanone Toxicological Review for 2-Hexanone (PDF 136 pp, 964 K) 591-78-6 09/25/2009
Hexazinone QuickView for Hexazinone IRIS Summary for Hexazinone Yes 51235-04-2 09/30/1987 OPP RED for Hexazinone (PDF 4 pp, 17 K)
Hydrazine/Hydrazine sulfate QuickView for Hydrazine/Hydrazine sulfate IRIS Summary for Hydrazine/Hydrazine sulfate Yes 302-01-2 09/07/1988
Hydrogen Cyanide and Cyanide Salts QuickView for Hydrogen Cyanide and Cyanide Salts IRIS Summary for Hydrogen Cyanide and Cyanide Salts Toxicological Review for Hydrogen Cyanide and Cyanide Salts (PDF 153 pp, 910 K) Various 09/28/2010
Hydrogen chloride QuickView for Hydrogen chloride IRIS Summary for Hydrogen chloride Yes 7647-01-0 07/01/1995
Hydrogen sulfide QuickView for Hydrogen sulfide IRIS Summary for Hydrogen sulfide Toxicological Review for Hydrogen sulfide (PDF 74 pp, 1.44 M) 7783-06-4 07/28/2003
Hydroquinone QuickView for Hydroquinone IRIS Summary for Hydroquinone Yes 123-31-9 10/01/1990

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