Registration Dossier
Registration Dossier
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EC number: 209-935-0 | CAS number: 598-50-5
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: Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 988
- Report date:
- 1988
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 38412, part 8
- GLP compliance:
- no
Test material
- Reference substance name:
- Methylurea
- EC Number:
- 209-935-0
- EC Name:
- Methylurea
- Cas Number:
- 598-50-5
- Molecular formula:
- C2H6N2O
- IUPAC Name:
- methylurea
- Details on test material:
- - Name of test material (as cited in study report): Methylharnstoff technisch
Constituent 1
Sampling and analysis
- Analytical monitoring:
- no
Test organisms
- Test organisms (species):
- Pseudomonas putida
Study design
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 17 h
Test conditions
- Test temperature:
- 22 ± 1 °C
- pH:
- 4.8 - 7.3
- Nominal and measured concentrations:
- Nominal test substance concentrations:
156.25, 312.5, 625, 1250, 2500, 5000, 7500 and 10000 mg/l - Details on test conditions:
- TEST SYSTEM
- Test vessel: Erlenmeyer vessels (300 ml)
- Fill volume: 100 ml
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 17 h
- Dose descriptor:
- EC10
- Effect conc.:
- 6 532 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth inhibition
- Duration:
- 17 h
- Dose descriptor:
- EC50
- Effect conc.:
- 7 854 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth inhibition
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.
