Registration Dossier

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

A 48-hour EC50 of 0.71 mg/l of MBT was determined on Daphnia magna following the OECD Guideline 202 (MITI, 1999).

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.71 mg/L

Additional information

Data from MBT.

ZMBT is an organic complex with where the relation of Zn to Sulfur bridge is considered to be ionic.

Meanwhile MBT is often found as impurity in ZMBT with variable percentage. The dissolution of MBT determines the hazard profile of ZMBT aqueous solution; and hence a read-across approach from MBT is used to support the risk assessment of ZMBT as a worst-case. The read-across is justified as ZMBT has an ionic structure where MBT is contained. No valid data with ZMBT as test substance are available for the acute invertebrates toxicity.