Registration Dossier
Registration Dossier
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EC number: 297-474-6 | CAS number: 93572-43-1 A complex combination of hydrocarbons obtained by refining of crude oil. It consists predominantly of aromatics, naphthenics and paraffinics and produces a finished oil with a viscosity of 120 SUS at 100°F (23cSt at 40°C).
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study summary
Data source
Reference
- Reference Type:
- review article or handbook
- Title:
- I U C L I D D a t a s e t Substance ID: 74869–22–0
- Author:
- EUROPEAN COMMISSION – European Chemicals Bureau
- Year:
- 1 987
- Bibliographic source:
- I U C L I D D a t a s e t Substance ID: 74869–22–0 pag 33
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.3 (Algal Inhibition test)
- Deviations:
- not specified
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 64741–89–5
- IUPAC Name:
- 64741–89–5
Constituent 1
Sampling and analysis
- Analytical monitoring:
- yes
Test solutions
- Vehicle:
- not specified
Test organisms
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Study design
- Test type:
- not specified
- Water media type:
- not specified
- Limit test:
- yes
- Total exposure duration:
- 96 h
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 96 h
- Dose descriptor:
- EL50
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- not specified
- Basis for effect:
- biomass
- Duration:
- 96 h
- Dose descriptor:
- EL50
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- not specified
- Basis for effect:
- growth rate
Any other information on results incl. tables
Results showed that neither the growth rate, nor the biomass of the algae were affected by the presence of the base oil WAF over the 96–hour exposure period i.e. the EL50 (96h biomass), EL50 (96h growth rate) and the NOEL (No Observed Effect Loading Rate) were all greater than 1000 mg/l.
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.
