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33 U.S.C. 1251 et seq., and Executive Order 11735, superseded by Executive Order 12777, 56 FR 54757.
89 FR 21955, Mar. 28, 2024, unless otherwise noted.
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| Category | RQ
(lbs.) |
Endpoints for public receptors
LD50 |
Endpoints for fish, wildlife and sensitive environments using 96-hour LC50 | ||||
|---|---|---|---|---|---|---|---|
| Mammalian toxicity
(oral) (mg/kg) |
10%
(mg/kg) |
Aquatic toxicity
(mg/liter) |
10%
(mg/L) |
||||
| Lower | Upper | Lower | Upper | ||||
| X | 1 | 0 | 0.1 | 0.01 | 0 | 0.1 | 0.01 |
| A | 10 | 0.1 | 1 | 0.1 | 0.1 | 1 | 0.1 |
| B | 100 | 1 | 10 | 1 | 1 | 10 | 1 |
| C | 1,000 | 10 | 100 | 10 | 10 | 100 | 10 |
| D | 5,000 | 100 | 500 | 50 | 100 | 500 | 50 |