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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

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.