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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Polyseed broad spectrum micro-organism mix: EC50=36000mg/l, NOEC/EC10=5000mg/l (16hr)
Sewage sludge microorganisms. EC50>10000mg/l

Key value for chemical safety assessment

EC50 for microorganisms:
36 000 mg/L
EC10 or NOEC for microorganisms:
7 500 mg/L

Additional information

No data is available for the the UVCB substance itself. Studies are available on sewage sludge micro-organisms and a broad spectrum micro-organism mixtures for the major component 2-(2-(2-ethoxyyethoxy)ethoxy)ethanol which show that the substance is practically non-toxic to micro-organisms. The data for the other aquatic toxicity end point shows that the other major component, 3,6,9,12-tetraoxatetradecan-1-ol is less toxic than this read across surrogate so it seems an acceptable conservative approach to use data from 2-(2-(2-ethoxyethoxy)ethoxy)ethanol in place of absent data for the UVCB substance itself.