Registration Dossier
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EC number: 237-000-7 | CAS number: 13573-12-1
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Data on the acute toxicity of magnesium dimetaphosphate (CAS 13573-12-1) to fish are not available. The assessment was therefore based on a study conducted with the analogue substance calcium hydrogen orthophosphate (CAS 7757-93-9) as part of a read across approach, which is in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.5.
The acute toxicity of calcium hydrogen orthophosphate to fish was investigated in a study following OECD guideline 203 (Kim et al. 2013). The test was set up as a limit test under static conditions. Fish of the species Oryzias latipes were exposed to a nominal test substance concentration of 100 mg/L. The analytical recovery rate of the test substance was 13.0-14.2% of the nominal concentration. During the test period of 96 hours mortality and abnormal behavior of the test organisms were determined after 1, 24, 48, 72, and 96 hours. Mortality or adverse effects of the test substance were not observed. Based on the mean measured concentration an LC50(96 h) > 13.5 mg/L (nominal: LC50(96 h) >100 mg/L) was determined. Based on the study results for the read across substance calcium hydrogen orthophosphate the assessed substance magnesium dimetaphosphate is considered not acutely toxic to fish.
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