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Second List of Chemicals for Tier 1 Screening
This page presents an alphabetized list of 134 chemicals being considered for Tier 1 Screening. This list was published in a Federal Register Notice on November 17, 2010. The public should not presume the listing of a chemical or substance indicates it interferes with the endocrine systems of humans or other species simply because it has been listed for screening under the EDSP. EPA believes that these chemicals or substances should be candidates, at least for screening purposes, under EDSP testing based only on their pesticide registration status and/or because such substances may occur in sources of drinking water to which a substantial population may be exposed. Download a printable version of the table (PDF) (5 pp, 53K, About PDF)
| Chemical Name | CAS Number | SDWA | PAI | RR Schedule |
|---|---|---|---|---|
| 1,1,1,2-Tetrachloroethane | 630-20-6 | X | ||
| 1,1,1-Trichloroethane | 71-55-6 | X | ||
| 1,1,2-Trichloroethane | 79-00-5 | X | ||
| 1,1-Dichloroethane | 75-34-3 | X | ||
| 1,1-Dichloroethylene | 75-35-4 | X | ||
| 1,2,3-Trichloropropane | 96-18-4 | X | ||
| 1,2,4-Trichlorobenzene | 120-82-1 | X | ||
| 1,2-Dibromo-3-chloropropane (DBCP) | 96-12-8 | X | ||
| 1,2-Dichloroethane | 107-06-2 | X | ||
| 1,2-Dichloropropane | 78-87-5 | X | ||
| 1,3-Dinitrobenzene | 99-65-0 | X | ||
| 1,4-Dioxane | 123-91-1 | X | ||
| 1-Butanol | 71-36-3 | X | ||
| 2,4,5-TP (Silvex) | 93-72-1 | X | ||
| 2-Methoxyethanol | 109-86-4 | X | ||
| 2-Propen-1-ol | 107-18-6 | X | ||
| 4,4'-Methylenedianiline | 101-77-9 | X | ||
| Acetaldehyde | 75-07-0 | X | ||
| Acetamide | 60-35-5 | X | ||
| Acetochlor | 34256-82-1 | X | X | |
| Acetochlor ethanesulfonic acid (ESA) | 187022-11-3 | X | ||
| Acetochlor oxanilic acid (OA) | 194992-44-4 | X | ||
| Acrolein | 107-02-8 | X | X | |
| Acrylamide | 79-06-1 | X | ||
| Alachlor | 15972-60-8 | X | X | |
| Alachlor ethanesulfonic acid (ESA) | 142363-53-9 | X | ||
| Alachlor oxanilic acid (OA) | 171262-17-2 | X | ||
| alpha-Hexachlorocyclohexane | 319-84-6 | X | ||
| Aniline | 62-53-3 | X | ||
| Bensulide | 741-58-2 | X | X | FY 2008 |
| Benzene | 71-43-2 | X | ||
| Benzo(a)pyrene (PAHs) | 50-32-8 | X | ||
| Benzyl chloride | 100-44-7 | X | ||
| Butylated hydroxyanisole | 25013-16-5 | X | ||
| Carbon tetrachloride | 56-23-5 | X | ||
| Chlordane | 57-74-9 | X | ||
| Chlorobenzene | 108-90-7 | X | ||
| cis-1,2-Dichloroethylene | 156-59-2 | X | ||
| Clethodim | 99129-21-2 | X | X | FY 2008 |
| Clofentezine | 74115-24-5 | X | FY 2007 | |
| Clomazone | 81777-89-1 | X | FY 2007 | |
| Coumaphos | 56-72-4 | X | FY 2008 | |
| Cumene hydroperoxide | 80-15-9 | X | ||
| Cyanamide | 420-04-2 | X | FY 2008 | |
| Cyromazine | 66215-27-8 | X | FY 2007 | |
| Dalapon | 75-99-0 | X | ||
| Denatonium saccharide | 90823-38-4 | X | FY 2008 | |
| Di(2-ethylhexyl) adipate | 103-23-1 | X | ||
| Dichloromethane | 75-09-2 | X | ||
| Dicrotophos | 141-66-2 | X | X | FY 2008 |
| Dimethipin | 55290-64-7 | X | X | |
| Dinoseb | 88-85-7 | X | ||
| Diuron | 330-54-1 | X | X | |
| Endothall | 145-73-3 | X | X | |
| Endrin | 72-20-8 | X | ||
| Epichlorohydrin | 106-89-8 | X | ||
| Erythromycin | 114-07-8 | X | ||
| Ethylbenzene | 100-41-4 | X | ||
| Ethylene dibromide | 106-93-4 | X | ||
| Ethylene glycol | 107-21-1 | X | ||
| Ethylene thiourea | 96-45-7 | X | ||
| Ethylurethane | 51-79-6 | X | ||
| Etofenprox | 80844-07-1 | X | FY 2007 | |
| Fenamiphos | 22224-92-6 | X | X |
FY 2008 |
| Fenarimol | 60168-88-9 | X | FY 2007 | |
| Fenoxaprop-P-ethyl | 71283-80-2 | X | FY 2007 | |
| Fenoxycarb | 72490-01-8 | X | FY 2007 | |
| Flumetsulam | 98967-40-9 | X | FY 2008 | |
| Fomesafen sodium | 108731-70-0 | X | FY 2007 | |
| Fosetyl-Al (Aliette) | 39148-24-8 | X | FY 2008 | |
| Glufosinate ammonium | 77182-82-2 | X | FY 2008 | |
| HCFC-22 | 75-45-6 | X | ||
| Heptachlor | 76-44-8 | X | ||
| Heptachlor epoxide | 1024-57-3 | X | ||
| Hexachlorobenzene | 118-74-1 | X | ||
| Hexachlorocyclopentadiene | 77-47-4 | X | ||
| Hexane | 110-54-3 | X | ||
| Hexythiazox | 78587-05-0 | X | FY 2007 | |
| Hydrazine | 302-01-2 | X | ||
| Isoxaben | 82558-50-7 | X | FY 2008 | |
| Lactofen | 77501-63-4 | X | FY 2007 | |
| Lindane | 58-89-9 | X | ||
| Methanol | 67-56-1 | X | ||
| Methoxychlor | 72-43-5 | X | ||
| Methyl tert-butyl ether | 1634-04-4 | X | ||
| Metolachlor ethanesulfonic acid (ESA) | 171118-09-5 | X | ||
| Metolachlor oxanilic acid (OA) | 152019-73-3 | X | ||
| Molinate | 2212-67-1 | X | X |
|
| Nitrobenzene | 98-95-3 | X | ||
| Nitroglycerin | 55-63-0 | X | ||
| N-Methyl-2-pyrrolidone | 872-50-4 | X | ||
| N-Nitrosodimethylamine (NDMA) | 62-75-9 | X | ||
| n-Propylbenzene | 103-65-1 | X | ||
| o-Dichlorobenzene | 95-50-1 | X | ||
| o-Toluidine | 95-53-4 | X | ||
| Oxirane, methyl- | 75-56-9 | X | ||
| Oxydemeton-methyl | 301-12-2 | X | X | FY 2008 |
| Oxyfluorfen | 42874-03-3 | X | X | |
| Paclobutrazol | 76738-62-0 | X | FY 2007 | |
| p-Dichlorobenzene | 106-46-7 | X | X | |
| Pentachlorophenol | 87-86-5 | X | X | |
| Perchlorate | 14797-73-0 | X | ||
| Perfluorooctane sulfonic acid (PFOS) | 1763-23-1 | X | ||
| Perfluorooctanoic acid (PFOA) | 335-67-1 | X | ||
| Picloram | 1918-02-1 | X | X | |
| Polychlorinated biphenyls | 1336-36-3 | X | ||
| Profenofos | 41198-08-7 | X | X | FY 2008 |
| Propetamphos | 31218-83-4 | X | FY 2008 | |
| Propionic acid | 79-09-4 | X | FY 2008 | |
| Pyridate | 55512-33-9 | X | FY 2007 | |
| Quinclorac | 84087-01-4 | X | FY 2008 | |
| Quinoline | 91-22-5 | X | ||
| Quizalofop-P-ethyl | 100646-51-3 | X | FY 2008 | |
| RDX | 121-82-4 | X | ||
| sec-Butylbenzene | 135-98-8 | X | ||
| Sodium tetrathiocarbonate | 7345-69-9 | X | FY 2008 | |
| Styrene | 100-42-5 | X | ||
| Sulfosate | 81591-81-3 | X | FY 2007 | |
| Temephos | 3383-96-8 | X | FY 2008 | |
| Terbufos | 13071-79-9 | X | X | FY 2008 |
| Terbufos sulfone | 56070-16-7 | X | ||
| Tetrachloroethylene | 127-18-4 | X | ||
| Thiophanate-methyl | 23564-05-8 | X | X | |
| Toluene diisocyanate | 26471-62-5 | X | ||
| Toxaphene | 8001-35-2 | X | ||
| trans-1,2-Dichloroethylene | 156-60-5 | X | ||
| Trichloroethylene | 79-01-6 | X | ||
| Triethylamine | 121-44-8 | X | ||
| Triflumizole | 68694-11-1 | X | FY 2007 | |
| Trinexapac-ethyl | 95266-40-3 | X | FY 2008 | |
| Triphenyltin hydroxide (TPTH) | 76-87-9 | X | X | |
| Vinclozolin | 50471-44-8 | X | X | |
| Xylenes (total) | 1330-20-7 | X | X | |
| Ziram | 137-30-4 | X | X |
CAS Number = Chemical Abstract Services Registry Number
SDWA = Drinking water chemical based on CCL 3 List or chemicals with National Primary Drinking Water Regulations
PAI = Pesticide active ingredient (Current pesticide registration exists)
RR = OPP Registration Review date