Registration Dossier
Registration Dossier
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EC number: 402-860-6 | CAS number: 110553-27-0 CG 25-1320; IRGANOX 1520; TK 12229/1
Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- not specified
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Data provided by ECHA - information from migrated NONS file as per inquiry 06-0000021296-70-0000.
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
- Year:
- 1 988
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Annex V, C2
- 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
- Details on test solutions:
- Identity and concentration of auxlllary solvent for dispersal: 1 9 of the substanoe was dissolved
in and made up to 10 ml
with OMF: This solution was dlluited to a concentration of
100 mgtl with water c6ntaining 2.3 mgll
AII
Test organisms
- Test organisms (species):
- other aquatic crustacea: Daphnia magna
Study design
- Test type:
- not specified
- Water media type:
- not specified
- Limit test:
- yes
- Total exposure duration:
- 24 h
- Post exposure observation period:
- no data
Test conditions
- Hardness:
- 240 mg CaC03/L
- Test temperature:
- no data
- pH:
- no data
- Dissolved oxygen:
- no data
- Salinity:
- no data
- Nominal and measured concentrations:
- no data
- Details on test conditions:
- no data
- Reference substance (positive control):
- not specified
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 24 h
- Dose descriptor:
- EC100
- Effect conc.:
- > 5.5 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Duration:
- 24 h
- Dose descriptor:
- EC0
- Effect conc.:
- < 0.5 mg/L
- Nominal / measured:
- not specified
- Conc. based on:
- not specified
- Basis for effect:
- mobility
- Details on results:
- The immobility of the most daphnias was affected by deposits of the test substances of their body. Therefore EC50 could not be determined.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The immobility of the most daphnids was affected by deposits of the test substances of their body. Therefore EC50 could not be determined.
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