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Toxicity to microorganisms

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Description of key information

The Inhibition of the Respiration of Activated Sludge when exposed to 1H-Tetrazol-5-amine-, N- 1 H-tetrazol-5-yl-, monoammonium salt was determined according to OECD 209 resp. EU C.11.
For the test item 1H-Tetrazol-5-amine-, N-1H-tetrazol-5-yl-, monoammonium salt, inhibi¬tion values ranging from 86.5 to 0.6% were found. From these, the following results were determined:
3h NOEC = 3.2 mg/L, 3h EC20 = 21 mg/L, 3h EC50 =120 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
120 mg/L
EC10 or NOEC for microorganisms:
3.2 mg/L

Additional information

Data obtained from a guideline study according to OECD guideline 209 and therefore considered reliable without restrictions.