Registration Dossier
Registration Dossier
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EC number: 915-389-0 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Activated sludge: EC0>2000mg/l (TEGME)
POLYSEED: IC10=10000mg/l, IC50=23500mg/l (TetraEGME)
POLYSEED: IC10=5000mg/l, IC50>50000mg/l (TEGME)
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 10 g/L
Additional information
Toxicity data is available for a monoconstituent substance that is a major part of this multi-constituent substance and that is considered representative of the substance as a whole. In a Microtox assay using TetraEGME and a photobacterium, the IC50 was found to be 23.5g/L and the IC10 10g/lL Against a broad spectrum micro-organisms mixture, the IC10 was not reached when tested up to 50g/L using the closely related substance TEGME and in an activated sludge respiration inhibition test, no inhibition was found up to the maximum tested concentration of 2000mg/l with the same substance. The data allows a confident prediction that the toxicity to micro-organisms of the substance as a whole is very low. As toxicity for aquatic species as a whole decreases with increasing molecular weight and this is not contradicted here, the key value used is the IC10 for TetraEGME.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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