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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: IC10=10000mg/l, IC50=23500mg/l (TetraEGME)

Activated sludge: EC0>2000mg/l (TEGME)

POLYSEED: IC10=5000mg/l, IC50>50000mg/l (TEGME

Key value for chemical safety assessment

EC50 for microorganisms:
23 500 mg/L
EC10 or NOEC for microorganisms:
10 000 mg/L

Additional information

Toxicity data is available for a methyl tetraglycol.  Against a broad spectrum micro-organisms mixture an IC10 of 10000mg/l and an IC50 of 23500mg/l was established when tested using the substance. In an activated sludge respiration inhibition test, no inhibition was found up to the maximum tested concentration of 2000mg/l with the substance triethylene glycol methyl ether. In a Microtox assay using the same substance and a photobacterium, the IC50 was not reached up to the maximum tested concentration of 50000mg/l.