Registration Dossier
Registration Dossier
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EC number: 913-600-0 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- other information
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- publication
- Title:
- Chemical Substance Search (Sodium iodide)
- Author:
- Registered substances-ECHA
- Bibliographic source:
- http://echa.europa.eu/web/guest/information-on-chemicals/registered-substances?p_p_id=48_INSTANCE_Rfk8&_48_INSTANCE_Rfk8_iframe_q=Hydroquinone&_48_INSTANCE_Rfk8_iframe_legal=true
Materials and methods
- Principles of method if other than guideline:
- estimated via modelling method
- GLP compliance:
- no
Test material
- Reference substance name:
- Sodium iodide
- EC Number:
- 231-679-3
- EC Name:
- Sodium iodide
- Cas Number:
- 7681-82-5
- Molecular formula:
- INa
- IUPAC Name:
- Sodium iodide
- Details on test material:
- As sodium iodide is with 56% the main compound of this reaction mass a read-across of data from this salt to cover this endpoint for the reaction mass is assumed to be acceptable.
Constituent 1
Test organisms
- Test organisms (species):
- Scenedesmus quadricauda
Study design
- Test type:
- static
- Water media type:
- not specified
- Total exposure duration:
- 8 d
Test conditions
- Test temperature:
- 27°C
- Details on test conditions:
- Application Frequency : 27 Celsius
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 8 d
- Dose descriptor:
- LOEC
- Effect conc.:
- 2 370 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: population changes
- Duration:
- 7 d
- Dose descriptor:
- LOEC
- Effect conc.:
- 2 370 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: Population changes, general
Applicant's summary and conclusion
- Executive summary:
The toxic threshold concentration for 8-day growth of Scenedesmus quadricauda was found to be 2370 mg/L. Based on the estimated study the result obtained for the alga indicates that the substance is not toxic to the aquatic algal environment. These measures were observed based on the mesurements taken on general population changes for 8 days.
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.
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