Table 2 Toxicity level classification by effects by LC50 (Agency, 2020)
From: Large-scale energy storage system: safety and risk assessment
Level | Health effect | LC50 (ppm) |
|---|---|---|
1 | Significant irritation | 5000–10000 |
2 | Temporary Incapacitation | 3000–5000 |
3 | Serious or permanent injury | 1000–3000 |
4 | Lethal | Gas: < 1000 Liquid: 10–200 mg/L |