Registration Dossier
Registration Dossier
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EC number: 229-912-9 | CAS number: 6834-92-0
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
EC50 (3h, respiratory inhibition) > 100 mg/L (activated sludge)
EC0 (30 min, oxygen consumption) > 1000 mg/L (Pseudomonas putida)
Key value for chemical safety assessment
Additional information
The toxicity of a sodium metasilicate solution has been determined in an activated sludge respiratory inhibition test in compliance with OECD 203 (Calmels 1994). The 3 h EC50 was > 100 mg/L. In a further study complying with DIN 38412 -27, the toxicity to Pseudomonas putida was tested in an oxygen consumption inhibition test. Concentrations of a sodium metasilicate solution of up to 1000 mg/L did not cause toxic effects and thus the EC0 was determined to be >1000 mg/L (Richterich and Muehlberg 2001).
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