Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Short-term toxicity to fish:

The toxicity of the test item Tetrahydro-4-methyl-2H-pyran was examined in a fish acute test according to OECD 203 and under GLP conditions. The 96-hour LC50 was determined with > 120 mg/L based on nominal concentrations.

Short-term toxicity to daphnia:

The toxicity of the test item Tetrahydro-4-methyl-2H-pyran was examined in a acute daphnia test according to OECD 202 and under GLP conditions. The 48-hour EC50 was determined as > 100 mg/L based on nominal concentration.

Toxicity to aquatic algae:

The toxicity of the test item Tetrahydro-4-methyl-2H-pyran was examined in an algae test according to OECD 201 and under GLP conditions. The ErC50 was determined as > 100 mg/L, the respective NOEC was 32 mg/L, both values were based on nominal concentrations.

Toxicity to microorganisms:

An activated sludge respiration inhibition test according to OECD 209 and in compliance with GLP was conducted to determine the inhibition potential of Tetrahydr-4 -methyl-2H-pyran on microorganisms. The EC50 was determined to be greater than 540 mg/L based on mean measured concentration.

Additional information