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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

No acute aquatic toxicity data on daphnia available for aluminum sodium silicate: based on read-across, expected EL50 >10,000 mg/L (effective loading). 

Key value for chemical safety assessment

Additional information

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 of structure-analogous synthetic amorphous calcium silicate (CS) and silica (SAS). Therefore, it is concluded that NAS will neither 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 synthetic amorphous sodium aluminum silicates (NAS).