R: Section 6 risk management rule
Indicates a substance that is the subject of a proposed or final TSCA section 6 risk management rule.
20 substances carry it in the July 2026 release, of which 19 are designated active.
What it obliges
Compliance with the rule, which can restrict or prohibit manufacture, processing, use, distribution or disposal. Section 6 is the strongest tool TSCA gives EPA.
What this flag does not establish
The flag does not distinguish a proposed rule from a final one. Read the rule.
Substances carrying R
Showing 20 of 20, 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 | SP T |
| 1332-21-4 | Asbestos | Active | S UVCB |
| 68937-41-7 | Phenol, isopropylated, phosphate (3:1) | Active | TP UVCB |
| 85204-21-3 | 2-Butenoic acid, 4-[(2-ethylhexyl)amino]-4-oxo-, (2Z)-, compd. with 2,2',2''-nitrilotris[ethanol] (1:1) | Active | PMN 5F |
| 1336-36-3 | 1,1'-Biphenyl, chloro derivs. | Active | UVCB |
| 79-01-6 | Ethene, 1,1,2-trichloro- | Active | S |
| 10588-01-9 | Chromic acid (H2Cr2O7), sodium salt (1:2) | Active | |
| 11103-86-9 | Potassium zinc chromate hydroxide (KZn2(CrO4)2(OH)) | Active | |
| 1333-82-0 | Chromium oxide (CrO3) | Active | |
| 133-49-3 | Benzenethiol, 2,3,4,5,6-pentachloro- | Active | |
| 13530-65-9 | Chromic acid (H2CrO4), zinc salt (1:1) | Active | |
| 13530-68-2 | Chromic acid (H2Cr2O7) | Active | |
| 732-26-3 | Phenol, 2,4,6-tris(1,1-dimethylethyl)- | Active | |
| 75-09-2 | Methane, dichloro- | Active | |
| 7738-94-5 | Chromic acid (H2CrO4) | Active | |
| 7775-11-3 | Chromic acid (H2CrO4), sodium salt (1:2) | Active | |
| 7778-50-9 | Chromic acid (H2Cr2O7), potassium salt (1:2) | Active | |
| 7789-00-6 | Chromic acid (H2CrO4), potassium salt (1:2) | Active | |
| 87-68-3 | 1,3-Butadiene, 1,1,2,3,4,4-hexachloro- | Active | |
| 14018-95-2 | Chromic acid (H2Cr2O7), zinc salt (1:1) | 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.