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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 402-860-6 | CAS number: 110553-27-0 CG 25-1320; IRGANOX 1520; TK 12229/1
Short-term toxicity to fish
Administrative data
- Endpoint:
- short-term toxicity to fish
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Not specified
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP (taken from SNIF file). Registrant refering to studies >12 years old at the permission of ECHA.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Report date:
- 1998
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.1 (Acute Toxicity for Fish)
- GLP compliance:
- yes
Test material
- Reference substance name:
- 4,6-bis(octylthiomethyl)-o-cresol
- EC Number:
- 402-860-6
- EC Name:
- 4,6-bis(octylthiomethyl)-o-cresol
- Cas Number:
- 110553-27-0
- Molecular formula:
- C25H44OS2
- IUPAC Name:
- 4,6-bis(octylthiomethyl)-o-cresol
Constituent 1
Test solutions
- Vehicle:
- yes
- Details on test solutions:
- Identity and concentration of auxiliary solvent for dispersal: 5 g of the substance were dissolved in and made up to 50 ml with DMF (4 mg/l Alkylphenol-polyglycolether were added directly to the water in the tank prior to the addition of the stock solution)
Test organisms
- Test organisms (species):
- Danio rerio (previous name: Brachydanio rerio)
Study design
- Test type:
- semi-static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 96 d
Test conditions
- Hardness:
- 176 mg CaC03/L
- Details on test conditions:
- Not detailed.
- Reference substance (positive control):
- no
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 24 h
- Dose descriptor:
- LC50
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- mortality (fish)
- Duration:
- 48 h
- Dose descriptor:
- LC50
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- mortality (fish)
- Duration:
- 72 h
- Dose descriptor:
- LC50
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- mortality (fish)
- Duration:
- 96 h
- Dose descriptor:
- LC50
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- mortality (fish)
- Duration:
- 96 h
- Dose descriptor:
- LC100
- Effect conc.:
- > 100 mg/L
- Basis for effect:
- mortality (fish)
- Duration:
- 96 h
- Dose descriptor:
- NOEC
- Effect conc.:
- > 100 mg/L
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The substance is not deemed to be harmful to fish at the concentration measured within the study.
- Executive summary:
The substance is not deemed to be harmful to fish at the concentration measured within the study.
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.
