Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The Lethal concentration (LC50) for Thiosemicarbazide was found to be 20.8 mg/L in a 96 hr study conducted on Pimephales promelas.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
20.8 mg/L

Additional information

Static-96 hr test was conducted to find out the toxicity of thiosemicarbazide to fish. Thiosemicarbazide exposed to Fathead Minnow (Pimephales promelas) at concentration of 20.8mg/L. Fish were observed for 14 days. 50 % mortality was observed at concentration of 20.8 mg/l.Therefore median lethal dose (LC50) was considered to be 20.8 mg/L for Pimephales promelas based on 50% mortality.

Based on the value and biodegradability status, the substance may be classified in aquatic chroniccategory 3 as per the CLP regulation.