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Ecotoxicological information

Toxicity to microorganisms

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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.