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Short-term toxicity to fish

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Description of key information

TItanium nitride is not toxic to fathead minnow after 96 h exposure at a nominal concentration of 100 mg/L.

Key value for chemical safety assessment

Additional information

In a 96-h acute toxicity study according to OECD guideline 203 (GLP), fathead minnow (Pimephales promelas) were exposed to titanium nitride at nominal concentrations of 0 (control), 6.25, 12.5, 25, 50 and 100 mg TiN/L under static conditions. 

Measured titanium concentrations were below the limit of quantification (2 µg/L) at toxicity test initiation and at test termination in all control and test exposures.

Thus, the test endpoint (mortality) was determined using the nominal loading rate of the test material.

No mortality was observed in 100 mg/L loading rate exposures, identical to that observed in the control exposures. An acute LC50 value of greater than 100 mg/L titanium nitride (nominal) was determined in this study.