Registration Dossier
Registration Dossier
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EC number: 205-840-3 | CAS number: 155-04-4
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The chronic toxicity of MBT to aquatic invertebrates (Dapnia magna) was
tested according to OECD TG 211 "Daphnia magna Reproduction test". After 21 days of exposure, an EC50 of 0.33 mg/L and a NOEC of 0.08 mg/L were obtained (MITI, 1999).
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.08 mg/L
Additional information
Data from MBT.
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 chronic invertebrates toxicity.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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