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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 941-031-8 | CAS number: -
Short-term toxicity to fish
Administrative data
- Endpoint:
- short-term toxicity to fish
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Scientifically accepted calculation method, substance within applicability domain of model (based on molecularf weight and logPow).
- Justification for type of information:
- QSAR prediction: migrated from IUCLID 5.6
Data source
Referenceopen allclose all
- Reference Type:
- other: ECOSAR calculation
- Title:
- Unnamed
- Reference Type:
- other: Estimation software
- Title:
- Estimation Programs Interface Suite for Microsoft Windows, v4.11
- Author:
- US EPA
- Year:
- 2 012
- Bibliographic source:
- United States Environmental Protection Agency, Washington, DC, USA; November 2012
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- ECOSAR v1.11: Estimation of acute toxicity to fish.
- GLP compliance:
- no
Test material
- Reference substance name:
- 5,6-dihydro-4-methyl-2-(2-methylpropyl)-2H-pyran
- EC Number:
- 261-952-2
- EC Name:
- 5,6-dihydro-4-methyl-2-(2-methylpropyl)-2H-pyran
- Cas Number:
- 59848-65-6
- Molecular formula:
- C10H18O
- IUPAC Name:
- 6-isobutyl-4-methyl-3,6-dihydro-2H-pyran
- Details on test material:
- The evaluation of the biodegration potential of Reaction products of 3-methylbutanal and 3-methylbut-3-en-1-ol is based on the both main components (CAS given above).
Constituent 1
Test organisms
- Test organisms (species):
- other: fish
Study design
- Water media type:
- freshwater
- Total exposure duration:
- 96 h
Results and discussion
Effect concentrations
- Duration:
- 96 h
- Dose descriptor:
- LC50
- Effect conc.:
- 0.625 mg/L
- Nominal / measured:
- estimated
- Basis for effect:
- mortality (fish)
Applicant's summary and conclusion
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.
