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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 701-065-4 | CAS number: -
Toxicity to microorganisms
Administrative data
- Endpoint:
- activated sludge respiration inhibition testing
- Data waiving:
- other justification
- Justification for data waiving:
- other:
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
No acute aquatic toxicity to fish study for magnesium silicate available. Read-across from silicon dioxide and sodium aluminium silicate (NAS) studies show a low acute toxicity.
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
- Effect concentration:
- 10 000 mg/L
No acute toxicity data on daphnia for magnesium silicate available, however, based on read-across from silicon dioxide it is expected to shows no acute toxicity with an EL50 >10,000 mg/L (effective loading).
Based on the high tolerance and ubiquitous natural occurrence of this substance class, the need for generation of data for this specific compound is waived in line with REACH Regulation 1907/2006, Annex IX, Section 9.1.
There was no adverse effect on daphniae in the presence of water-accommodated fractions ofstructure-analogous synthetic amorphous silica (SAS). Therefore, it is concluded that magnesium silicate will
also not be toxic to daphnia.
It is assumed that the freshwater results are also applicable to marine life, i.e. no acute aquatic toxicity expected from exposure to magnesium silicate.
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
- EC50 for freshwater algae:
- 10 000 mg/L
- EC10 or NOEC for freshwater algae:
- 10 000 mg/L
A structure-analogous silicate failed to produce any aquatic toxicity, EL50 >10,000 mg/L. Based on the high tolerance and ubiquitous natural occurrence of this substance class, the need for generation of data for this specific compound is waived in line with REACH Regulation 1907/2006, Annex IX, Section 9.1.
No acute and chronic aquatic toxicity - including the marine environment - expected from exposure to magnesium silicate.
Data source
Materials and methods
Results and discussion
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.
