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[Editor’s Note: This appendix is added effective May 28, 2024.][Change Notice]
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 |
[89 FR 21955, March 28, 2024]