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
Toxicity to microorganisms
Administrative data
- Endpoint:
- toxicity to microorganisms
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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 test
- Title:
- Unnamed
- Year:
- 1 988
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: EEC L 133, p. 118-122 (30 May 1988)
- 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
- Details on test material:
- no data
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Details on test solutions:
- no data
Study design
- Limit test:
- yes
- Total exposure duration:
- 3 h
- Post exposure observation period:
- no data
Test conditions
- Hardness:
- no data
- Test temperature:
- no data
- pH:
- no data
- Nominal and measured concentrations:
- no data
- Reference substance (positive control):
- not specified
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 3 h
- Dose descriptor:
- IC50
- Effect conc.:
- > 100 g/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- not specified
- Duration:
- 3 h
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- not specified
- Details on results:
- no data
- Results with reference substance (positive control):
- no data
- Reported statistics and error estimates:
- no data
Any other information on results incl. tables
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The IC50 of the test substance in the activated sludge respiration inhibition was >100 mg/l. NOEC was >= 100 mg/l (nominal concentrations). The IC50 and NOEC values are above the detection limit of the substance.
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.
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