Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Fatty acids, C16 -18 and C18 unsatd., Me esters, epoxidized (CAS-No. 158318-67-3) has a potential to bioaccumulate due to their physico-chemical properties (log Kow > 3).

Considering the calculated Bioaccumulation Estimates via EPISUITE, v4.10, the BCF value is estimated at 136.5 L/kg (Arnot-Gobas method, upper trophic) and the BCF calculation via CATALOGIC v. BCF base-line model v.02.05 the BCF value is estimated at 43.04 (log BCF = 1.6339). The influence of mitigating factors like ionization of the molecule, water solubility, size and metabolism are considered by the model.

The readily biodegradability, which makes exposure of the aquatic compartment unlikely, and no toxicity to fish (EC50 >100 mg/L), no bioaccumulation is expected. If taken up by fish, these carboxylate ester-containing substances are expected to be readily metabolized and excreted. Sedimental and terrestrial bioaccumulation is considered to be not relevant as the substance is readily biodegradable.

However, as the substance is readily biodegradable, no chronic exposure of aquatic organisms is expected.

Based on all relevant data available for the assessment of the bioaccumulation potential, it can be concluded that Fatty acids,C16 -18 and C18 -unsatd., Me esters, epoxidized has low potential for bioaccumulation and biomagnification via the food chain.