Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 412-770-9 | CAS number: 12141-67-2 NATRIUMMETAWOLFRAMAT
Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Directive 84/449/EEC, C.2
- GLP compliance:
- yes
Test material
- Reference substance name:
- Hexasodium tungstate hydrate
- EC Number:
- 412-770-9
- EC Name:
- Hexasodium tungstate hydrate
- Cas Number:
- 12141-67-2
- Molecular formula:
- Na6 H2 W12 O40 . xH2O
- IUPAC Name:
- hydrate hydrogen oxygen sodium hydride tungsten
Constituent 1
Test organisms
- Test organisms (species):
- Daphnia magna
Study design
- Test type:
- static
Test conditions
- Hardness:
- 210 mg CaCO3/L
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 24 h
- Dose descriptor:
- EC50
- Effect conc.:
- 261 mg/L
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 83.4 mg/L
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 32 mg/L
- Details on results:
- % concentration loss over test: 0
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.
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.
