Registration Dossier
Registration Dossier
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EC number: 200-315-5 | CAS number: 57-13-6
Biological effects monitoring
Administrative data
- Endpoint:
- biological effects monitoring
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 979
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Filed study
- GLP compliance:
- no
- Type of study / information:
- Field study
Test material
- Reference substance name:
- Urea
- EC Number:
- 200-315-5
- EC Name:
- Urea
- Cas Number:
- 57-13-6
- Molecular formula:
- CH4N2O
- IUPAC Name:
- urea
- Details on test material:
- It is assumed that the purity is 100%
Constituent 1
Results and discussion
Any other information on results incl. tables
Stay et al. (1978) investigated the effects on stream organisms of fertilizing second growth Douglas fir in the Cascade mountains of western Oregon with urea at the rate of 225 kg N/ha (equivalent to 482 kg urea/ha) . They found no significant effects on algal growth potential, stream macroinvertebrates, or caged rainbow trout fingerlings.
Applicant's summary and conclusion
- Conclusions:
- Stay et al. (1978) investigated the effects on stream organisms of fertilizing second growth Douglas fir in the Cascade mountains of western Oregon with urea at the rate of 225 kg N/ha (equivalent to 482 kg urea/ha) . They found no significant effects on algal growth potential, stream macroinvertebrates, or caged rainbow trout fingerlings.
- Executive summary:
Stay et al. (1978) investigated the effects on stream organisms of fertilizing second growth Douglas fir in the Cascade mountains of western Oregon with urea at the rate of 225 kg N/ha (equivalent to 482 kg urea/ha) . They found no significant effects on algal growth potential, stream macroinvertebrates, or caged rainbow trout fingerlings.
This study is considered relevant and reliable for the risk assessment.
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.
