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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

No reliable toxicity data on microorganisms are available for synthetic rutile. A read-across approach between synthetic rutile and TiO2 is used. The key study is a GLP-conform study by Egeler and Goth (2009) that has been performed according to OECD 209 guideline. No statistically significant inhibitory effect on the respiration rate of the test system was observed up to the largest nominal dose of 1000 mg test item/L. All toxic effect levels (NOEC, EC10 and EC50) are therefore greater than 1000 mg TiO2/L.

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L
EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information