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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 619-753-7 | CAS number: 73611-02-6
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 10th December to 13th December 2001
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2002
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Version / remarks:
- referenced as Method C.3 of Comission Directive 92/69/EEC
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- UK GLP standards (Schedule 1, Good Laboratory Practice Regulations 1999 (SI 1999/3106))
Test material
- Reference substance name:
- (1R, 4R, 5S) 4-hydroxy-6,6-dimethyl-3-Oxabicyclo[3.1.0]hexan-2-one
- EC Number:
- 619-753-7
- Cas Number:
- 73611-02-6
- Molecular formula:
- C7H10O3
- IUPAC Name:
- (1R, 4R, 5S) 4-hydroxy-6,6-dimethyl-3-Oxabicyclo[3.1.0]hexan-2-one
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- yes
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 72 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- other: EC50 with respect to growth rate
- Effect conc.:
- 29 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- dissolved
- Remarks:
- test material
- Basis for effect:
- growth rate
- Remarks on result:
- other: 95% CL
- Duration:
- 72 h
- Dose descriptor:
- other: EC50 with respect to biomass
- Effect conc.:
- 26 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- dissolved
- Remarks:
- test material
- Basis for effect:
- biomass
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.
