Registration Dossier
Registration Dossier
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EC number: 942-582-7 | CAS number: -
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic plants other than algae
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Justification for type of information:
- See attached document below.
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Duration:
- 7 d
- Dose descriptor:
- EC50
- Effect conc.:
- 2 415 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- frond number
- Conclusions:
- Based on a worse case approach taking into account the highest toxicity observed to Lemna minor with the 2 main source substances [Potassium sulfate (CAS 7778-80-5) and Sodium sulfate (CAS 7757-82-6), the 7d-EC50 value of 2415 mg/L was attributed to the target substance "Sulfates of potassium, sodium and calcium, by-product from fermentation”. Even if a toxicity test on Lemna minor is not available for calcium sulphate, an adverse effect is not suspected for this source substance, due to the very high EC50 obtained with the two other salts to Lemna minor and the lack of adverse effects observed with these 3 salts to all aquatic organisms in acute tests.
Reference
Description of key information
Based on a worse case approach taking into account the highest toxicity observed to Lemna minor with the 2 main source substances [Potassium sulfate (CAS 7778-80-5) and Sodium sulfate (CAS 7757-82-6), the 7d-EC50 value of 2415 mg/L was attributed to the target substance "Sulfates of potassium, sodium and calcium, by-product from fermentation”. Even if a toxicity test on Lemna minor is not available for calcium sulphate, an adverse effect is not suspected for this source substance, due to the very high EC50 obtained with the two other salts to Lemna minor and the lack of adverse effects observed with these 3 salts to all aquatic organisms in acute tests.
Key value for chemical safety assessment
- EC50 for freshwater plants:
- 2 415 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.
