Registration Dossier
Registration Dossier
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EC number: 403-530-4 | CAS number: 129423-54-7 PV-ECHTGELB HGR
Toxicity to microorganisms
Administrative data
- Endpoint:
- activated sludge respiration inhibition testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Calcium 4-chloro-2-(5-hydroxy-3-methyl-1-(3-sulfonatophenyl)pyrazol-4-ylazo)-5-methylbenzenesulfonate
- EC Number:
- 403-530-4
- EC Name:
- Calcium 4-chloro-2-(5-hydroxy-3-methyl-1-(3-sulfonatophenyl)pyrazol-4-ylazo)-5-methylbenzenesulfonate
- Cas Number:
- 129423-54-7
- Molecular formula:
- C17H15ClN4O7S2.Ca
- IUPAC Name:
- calcium 4-chloro-5-methyl-2-{2-[3-methyl-5-oxo-1-(3-sulfonatophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazen-1-yl}benzene-1-sulfonate
- Details on test material:
- C.I. Pigment Yellow 191 , purity 96.7%
molecular weight 524.96 g/mol
empirical formula C17H13ClN4O7S2Ca
water solubility 0.053 g/6 (20°C)
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test solutions
- Vehicle:
- no
- Details on test solutions:
- Test concentrations 1000 mg/l
Test organisms
- Test organisms (species):
- activated sludge
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 3 h
Test conditions
- Test temperature:
- 18-22 °C
- Nominal and measured concentrations:
- Dry sludge concentration 4.29 g/l
- Details on test conditions:
- Permanent ventilation.
- Reference substance (positive control):
- yes
Results and discussion
Effect concentrations
- Duration:
- 3 h
- Dose descriptor:
- EC50
- Effect conc.:
- 1 000 mg/L
- Basis for effect:
- inhibition of total respiration
- Remarks:
- respiration rate
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
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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