| Q | A |
|---|---|
| Can I use the Top‑20 list for chemicals not on the list? | Yes, the ESRA model is generic. The list is a prioritisation shortcut; for any other substance you’ll need its own exposure & hazard data. |
| Is the CHEMAL GEGG database free? | A core dataset (CAS, basic phys‑chem, production volume) is open‑access via the EU‑OpenChem portal. The full exposure‑grid (scenario coefficients) is available under a Creative‑Commons Attribution‑NonCommercial license. |
| What software can run ESRA? | Commercial: ESRA‑Pro, RiskQuant. Open‑source: OpenESRA (Python‑based, integrates with pandas/numpy). |
| How often is the Top‑20 updated? | Annually, using the latest REACH & TSCA submissions plus peer‑reviewed toxicity data. |
| What if my jurisdiction uses a different risk banding system? | ESRA scores are dimensionless; you can map them to any local banding (e.g., “Tier‑1/2/3”) by setting custom cut‑offs. |
(If you’re new to environmental‑risk modelling or just looking for a quick reference on the most hazardous chemicals in the ESRA framework, this post is for you.) esra model chemal gegg 20 top
Corrected search: “ESRA model – chemical egg – 20 top results” | Q | A | |---|---| | Can