Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 227-290-3 | CAS number: 5766-67-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.48 mg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.048 mg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 9.4 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
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The environment will in princliple not be exposed as EDTN is used as an transported isolated intermediate and will not be present in its endproduct.
A read-across document was prepared to justify the estimation of the aquatic toxicity of EDTN partly based on data for the analogue substance PDTN. The 96h-LC50 of EDTN for fish is above 100 mg/l and for aquatic invertebrates, algae and micro-organisms the EC50 is also expected to be above 100 mg/l. Chronic data are available for PDTN for algae and Daphnids for which the latter showed the lowest EC10 value (25.6 mg/L). The consequent EDTN value used for PNEC derivation has therefore been derived correcting for molecular mass.
Conclusion on classification
The toxicity data indicate that the acute EC50 or LC50 for micro-organisms, algae, daphnia and fish is above 100 mg/l and the read across chronic EC10 values for algae and daphnia are > 1 mg/L. Also the bioaccumulation potential is low. Therefore the substance EDTN does not need to be classified for its environmental hazards according to Directive 67/548 or Regulation (EC) No 1272/2008 (2nd ATP to CLP).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
