Registration Dossier
Registration Dossier
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EC number: 205-358-3 | CAS number: 139-33-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 2.5 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.25 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 50 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- no exposure of sediment expected
Sediment (marine water)
- Hazard assessment conclusion:
- no exposure of sediment expected
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 1.1 mg/kg soil dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Classification related key information
Physico-chemical properties and Efate
| log Pow | -4.3 (calculated) |
| water solubility | 108 g/L (literature) |
| Biodegradation | <60% in 28d (OECD 301B) |
| Bioaccumulation | BCF = 1-2 L/kg (read across) |
Aquatic acute toxicity
For fish: LC50 (96h) | > 100 mg/L (WoE, read across) |
For algae: EC50 (72h) | > 100 mg/L (WoE, read across) |
For crustacea: EC50 (48h) | > 100 mg/L (WoE, read across) |
Aquatic chronic toxicity
For fish: NOEC (35d) | >= 35.1 mg/L (OECD 210, read across) |
For algae: NOEC (72h | > 48.4 mg/L (OECD 201, WoE, read across) |
For crustacea: NOEC (21d) | >= 25 mg/L (OECD 211) |
Classification according to CLP
Based on the data above, Disodium dihydrogen ethylenediaminetetraacetate (CAS No. 139-33-3) is not considered to be readily biodegradable. No acute aquatic toxicity was observed below 100 mg/L for fish, invertebrates and algae. Valid chronic data are available for all trophic levels showing no effect values below 1 mg/L. Therefore, Disodium dihydrogen ethylenediaminetetraacetate does not need to be classified and labelled as acute or chronic aquatic hazard according to the 2nd ATP of the Regulation (EC) No. 1272/2008 (CLP).
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