Registration Dossier
Registration Dossier
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EC number: 947-962-6 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- Please see read across justification section 13.2
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 34 100 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other: 95% CI 29100 - 40600 mg/l
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 24 200 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other: 95% CI 22100 - 26500 mg/l
- Duration:
- 96 h
- Dose descriptor:
- EC50
- Effect conc.:
- 19 000 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other: 95% CI 16700 - 21400 mg/l
- Duration:
- 14 d
- Dose descriptor:
- NOEC
- Effect conc.:
- 15 000 mg/L
- Nominal / measured:
- meas. (not specified)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EL50
- Effect conc.:
- ca. 88.238 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Remarks on result:
- other: 95% CF: 71.724-115.582
- Executive summary:
By analogy with data on Extract obtained from defatted powder of Theobroma cacao(Malvaceae) by extraction with ethanol EC 947-375-5, the target substance is considered to have a 72-hour EL50 of 88.2 mg/L for growth rate and 16.2 mg/L for yield. Please see read across justification section 13.2 for more information.
Reference
Description of key information
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 88.238 mg/L
Additional information
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.
