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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Valid studies only reported:

P putida, 17hr EC10=722mg/l, EC50=964mg/l

Sewage micro-organisms, 3 hr EC50>1000mg/l, IC50=2800mg/l

Key value for chemical safety assessment

EC50 for microorganisms:
964 mg/L
EC10 or NOEC for microorganisms:
720 mg/L

Additional information

A guideline study using activated sludge respiration inhibition as a measure of toxicity to micro-organisms showed an EC20 of >=900mg/l. In a guideline study where basic details were reported, the bacteria P. putida were exposed to 2 -butoxyethyl acetate to concentrations in excess of 1g/l. The study concluded a 17hr EC50 of 964mg/l and an EC10 (which can be considered a NOEC) of 720mg/l. In a bacterial growth inhibition test using sewage microorganisms and turbimetry as the end point, the substance was found to inhibit growth by 50% at a concentration of 2800mg/l (IC50 =2800mg/l). It can be concluded that the substance has relatively low toxicity to bacteria.