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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Acute immobilisation to Daphnia magna has been investigated according to OECD/EU test methods. The effects of a limit concentration of 100 mg/L were determined, with and without adjustment of pH. The LC50 was in excess of 100 mg/L and the NOEC was 100 mg/L.

 

Algal growth inhibition to the unicellular freshwater green alga Pseudokirchneriella subcapitata has been investigated according to OECD/EU test methods. THPA was found to inhibit the growth after 72 hours exposure, EC50 values for inhibition of specific growth rate (ErC50) and yield (EyC50) being 65.3 mg/L and 61.4 mg/L, respectively. The potential for recovery from the observed effects was established.In accordance with ECHA guidance oninformation requirements and chemical safety assessment, Chapter R.7b: Endpoint specific guidance, theErC50 endpoint is used in DNEL derivation. This is because use of values based on biomass cannot be applied to an analysis of results from a system in exponential growth without logarithmic transformation.

 

Acute toxicity to fish (Rainbow trout) was determined according to OECD/EU test methods. A limit test was conducted under static conditions with a single concentration of 100 mg/L with and without adjustment of pH. The LC50 was in excess of 100 mg/L; the LOEC was 100 mg/L based on behavioural effects seen without adjustment of pH.