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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

The toxicity of alpha-Terpineol to micro-organisms was determined as part of a toxicity control in a GLP-compliant OECD Guideline 310 study. Activated sludge (obtained from a wastewater treatment plant treating predominantly domestic wastewater) was exposed to 64.8 mg/L sodium acetate (positive control) with and without addition of 25.7 mg/L alpha-Terpineol. The oxygen depletion in both solutions was measured and compared. Inhibition of the degradation of sodium acetate by the addition of alpha-Terpineol did not occur. Moreover, inhibition of the endogenous respiration of the inoculum by the test substance was also not detected. The NOEC for microorganism toxicity is 25.7 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
25.7 mg/L

Additional information