Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 234-390-0 | CAS number: 11138-47-9
Toxicity to aquatic plants other than algae
Administrative data
- Endpoint:
- toxicity to aquatic plants other than algae
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- according to general accepted guidelines a minimum of 5 plants should be tested per concentration. In this study only 4 plants were used. As the study is well documented the study can be considered as reliable screening test to assess the effects on submerged macrophytes.
Data source
Reference
- Reference Type:
- publication
- Title:
- Zum Einfluß von Bor auf submerse Weichwasser-Makrophyten
- Author:
- Nobel W
- Year:
- 1 981
- Bibliographic source:
- Angew Bot 55: 501-514
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Test on effect on photosynthesis
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Perboric acid, sodium salt
- EC Number:
- 234-390-0
- EC Name:
- Perboric acid, sodium salt
- Cas Number:
- 11138-47-9
- Molecular formula:
- For detailed information on substance identity, molecular and structural formula see attached file AD_PBS_Substance_Identification (taken from ECB (2007) EU RAR Perboric acid)
- IUPAC Name:
- sodium hydroxy hydrogen borate
- Details on test material:
- NaBO2 x 2 H2O2 x 3 H2O, purity: no data
Constituent 1
Sampling and analysis
- Analytical monitoring:
- not specified
Test organisms
- Test organisms (species):
- other: Elodea canadensis
Study design
- Water media type:
- freshwater
- Total exposure duration:
- 21 d
Test conditions
- Hardness:
- 1 °dH
- pH:
- 6.5
Results and discussion
Effect concentrations
- Duration:
- 21 d
- Dose descriptor:
- other: EC22
- Effect conc.:
- 2 mg/L
- Conc. based on:
- other: boron
- Basis for effect:
- other: inhibition of photosynthesis
- Details on results:
- The foliage was damaged. Increased content of B in plants (0.30 mg B)
Any other information on results incl. tables
21d-EC22 concentrations:
25 mg/L related to sodium perborate
6.2 mg/L related to H2O2
2 mg/L related to boron
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.
