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: 229-912-9 | CAS number: 6834-92-0
Endpoint summary
Administrative data
Description of key information
Additional information
A study with Brachydanio rerio by Richterich and Muehlberg (2001) was performed for a sodium metasilicate (anhydrous). The 96 h LC50 was determined to be 210 mg/L. In another study (UK Dept. Envir. 1991, Wallen et al. 1957) the toxicity of sodium metasilicate to Gambusia affinis was examined. The 96 h LC50 was determined to be 2320 mg/L.
No studies on aquatic invertebrates and algae are available on sodium metasilicate. Data are read-across to sodium silicate. In a study by Kirch (1997) exposure of Daphnia magna to sodium silicate solutions in a 48 h EC50 of 1700 mg/L. Sodium silicate was tested on the algae Scenedesmus subspicatus (Rieche 1995). The 72 h EC50 based on biomass was 207 mg/L. The EC50 for growth rate was determined as > 345.4 mg/L, the highest concentration tested.
The toxicity of a sodium metasilicate solution to microorganisms has been determined in an activated sludge respiratory inhibition test (Calmels 1994). The 3 h EC50 was > 100 mg/L. In a further study the toxicity to Pseudomonas putida was tested in an oxygen consumption inhibition test. The EC0 was determined to be >1000 mg/L (Richterich and Muehlberg 2001).
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.
