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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Ecotoxicological information

Sediment toxicity

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Key value for chemical safety assessment

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According to Annex VIII of Regulation (EC) No 1907/2006 the generation of sediment data is not required. Sediment toxicity is contemplated since the physico-chemical properties of Glyceryl undecylenate (CAS 123759-97-7) indicate a possible distribution to the sediment. Experimental data evaluating the toxicity of the substance to sediment organisms are not available. Since the substance is readily biodegradable, exposure of sediment organisms is unlikely. Read acorss data indicate that the substance is not toxic to fish, aquatic invertebrates or algae. The substance is, furthermore, not expected to bioaccumulate. Based on the available information, toxicity to sediment organisms is not expected to be of concern.

Glyceryl undecylenate (CAS 123759-97-7) is readily biodegradable. According to the Guidance on information requirements and chemical safety assessment, Chapter R.7b, readily biodegradable substances can be expected to undergo rapid and ultimate degradation in most environments, including biological Sewage Treatment Plants (STPs) (ECHA, 2014). Therefore, after passing through conventional STPs, only low concentrations of these substances are likely to be (if at all) released into the environment. Furthermore, the substance is poorly soluble in water (< 1 mg/L). The Guidance on information requirements and chemical safety assessment, Chapter R.7b (ECHA, 2014) states that once insoluble chemicals enter a standard STP, they will be extensively removed in the primary settling tank and fat trap and thus, only limited amounts will get in contact with activated sludge organisms. Thus, discharged concentrations of these substances into the aqueous/sediment compartment are likely to be negligible. Considering this, one can assume that the availability of Glyceryl undecylenate (CAS 123759-97-7) in the sediment environment is generally very low.

Acute and chronic aquatic toxicity tests (read-across data) performed with fish, aquatic invertebrates and algae showed no adverse effects in the range of the water solubility of the substance.

After uptake, Glyceryl undecylenate (CAS 123759-97-7) is expected to be enzymatically hydrolysed by carboxylesterases to the corresponding alcohol and fatty acids. The hydrolysis products are not expected to be bioaccumulative. QSAR estimations using BCFBAF v3.01 support the expected rapid biotransformation of this substance with BCF values ranging from 3.49 – 6.78 L/kg.

Based on the available information toxicological effects of Glyceryl undecylenate (CAS 123759-97-7) to sediment organisms are not anticipated.