EPA regulatory flags

T: Final section 4 test rule or order

Indicates a substance that is the subject of a final TSCA section 4 test rule or order.

65 substances carry it in the July 2026 release, of which 59 are designated active.

What it obliges

Testing and submission of the resulting data, on the terms of the rule or order. It also drops the Chemical Data Reporting threshold from 25,000 to 2,500 pounds.

Substances carrying T

Showing 65 of 65, active substances first. Search the full Inventory for a specific one.

CAS number Substance Status Other flags
1163-19-5 Benzene, 1,1'-oxybis[2,3,4,5,6-pentabromo- Active R SP
115-86-6 Phosphoric acid, triphenyl ester Active TP
24448-09-7 1-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl)-N-methyl- Active S
32534-81-9 Benzene, 1,1'-oxybis-, pentabromo deriv. Active S
32536-52-0 Benzene, 1,1'-oxybis-, octabromo deriv. Active S
428-59-1 Oxirane, 2,2,3-trifluoro-3-(trifluoromethyl)- Active S
608-93-5 Benzene, 1,2,3,4,5-pentachloro- Active S
68082-78-0 Lard, oil, Me esters Active UVCB
68442-60-4 Acetaldehyde, reaction products with formaldehyde, by-products from Active UVCB
68527-02-6 Alkenes, C12-24, chloro Active UVCB
68610-90-2 2-Butenedioic acid (2E)-, di-C8-18-alkyl esters Active UVCB
68647-60-9 Hydrocarbons, C>4 Active UVCB
9002-84-0 Ethene, 1,1,2,2-tetrafluoro-, homopolymer Active FRI
9011-17-0 1-Propene, 1,1,2,3,3,3-hexafluoro-, polymer with 1,1-difluoroethene Active FRI
100-01-6 Benzenamine, 4-nitro- Active
106-46-7 Benzene, 1,4-dichloro- Active
107-06-2 Ethane, 1,2-dichloro- Active
108-60-1 Propane, 2,2'-oxybis[1-chloro- Active
111-84-2 Nonane Active
118-75-2 2,5-Cyclohexadiene-1,4-dione, 2,3,5,6-tetrachloro- Active
118-79-6 Phenol, 2,4,6-tribromo- Active
120-36-5 Propanoic acid, 2-(2,4-dichlorophenoxy)- Active
120-83-2 Phenol, 2,4-dichloro- Active
123-33-1 3,6-Pyridazinedione, 1,2-dihydro- Active
156-60-5 Ethene, 1,2-dichloro-, (1E)- Active
17527-29-6 2-Propenoic acid, 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl ester Active
2062-98-8 Propanoyl fluoride, 2,3,3,3-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)- Active
21850-44-2 Benzene, 1,1'-(1-methylethylidene)bis[3,5-dibromo-4-(2,3-dibromopropoxy)- Active
22527-63-5 Propanoic acid, 2-methyl-, 3-(benzoyloxy)-2,2,4-trimethylpentyl ester Active
2494-89-5 Ethanol, 2-[(4-aminophenyl)sulfonyl]-, 1-(hydrogen sulfate) Active
2524-04-1 Phosphorochloridothioic acid, O,O-diethyl ester Active
25327-89-3 Benzene, 1,1'-(1-methylethylidene)bis[3,5-dibromo-4-(2-propen-1-yloxy)- Active
2941-64-2 Carbonochloridothioic acid, S-ethyl ester Active
320-72-9 Benzoic acid, 3,5-dichloro-2-hydroxy- Active
34455-29-3 1-Propanaminium, N-(carboxymethyl)-N,N-dimethyl-3-[[(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)sulfonyl]amino]-, inner salt Active
3772-94-9 Dodecanoic acid, 2,3,4,5,6-pentachlorophenyl ester Active
37853-59-1 Benzene, 1,1'-[1,2-ethanediylbis(oxy)]bis[2,4,6-tribromo- Active
37853-61-5 Benzene, 1,1'-(1-methylethylidene)bis[3,5-dibromo-4-methoxy- Active
4162-45-2 Ethanol, 2,2'-[(1-methylethylidene)bis[(2,6-dibromo-4,1-phenylene)oxy]]bis- Active
5026-74-4 2-Oxiranemethanamine, N-[4-(2-oxiranylmethoxy)phenyl]-N-(2-oxiranylmethyl)- Active
515-40-2 Benzene, (2-chloro-1,1-dimethylethyl)- Active
52556-42-0 1-Propanesulfonic acid, 2-hydroxy-3-(2-propen-1-yloxy)-, sodium salt (1:1) Active
556-67-2 Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octamethyl- Active
583-78-8 Phenol, 2,5-dichloro- Active
594-42-3 Methanesulfenyl chloride, trichloro- Active
615-58-7 Phenol, 2,4-dibromo- Active
640-19-7 Acetamide, 2-fluoro- Active
74-93-1 Methanethiol Active
75-34-3 Ethane, 1,1-dichloro- Active
78-87-5 Propane, 1,2-dichloro- Active
79-00-5 Ethane, 1,1,2-trichloro- Active
79-94-7 Phenol, 4,4'-(1-methylethylidene)bis[2,6-dibromo- Active
81-33-4 Anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetrone Active
87-10-5 Benzamide, 3,5-dibromo-N-(4-bromophenyl)-2-hydroxy- Active
87-65-0 Phenol, 2,6-dichloro- Active
933-75-5 Phenol, 2,3,6-trichloro- Active
95-50-1 Benzene, 1,2-dichloro- Active
95-77-2 Phenol, 3,4-dichloro- Active
95-95-4 Phenol, 2,4,5-trichloro- Active
16532-79-9 Benzeneacetonitrile, 4-bromo- Inactive
1940-42-7 Phenol, 4-bromo-2,5-dichloro- Inactive
576-24-9 Phenol, 2,3-dichloro- Inactive
608-71-9 Phenol, 2,3,4,5,6-pentabromo- Inactive
79-95-8 Phenol, 4,4'-(1-methylethylidene)bis[2,6-dichloro- Inactive
99-28-5 Phenol, 2,6-dibromo-4-nitro- Inactive

From the EPA non-confidential TSCA Inventory, July 2026 release. EPA also maintains a confidential portion it does not publish, so a substance absent from this data is not thereby unflagged.