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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

Accumulation of the substance CAS 133-66-4 is not to be expected.

Key value for chemical safety assessment

BCF (aquatic species):
10 L/kg ww

Additional information

One study on a close structural analogue (CAS 16090 -02 -1) concerning bioaccumulation is available. Generally tissue concentrations were too low to be quantified (CIBA-GEIGY 1973). In very few cases, values close to the sensitivity limit (0.03 mg/kg) had been measured. Therefore the bioaccumulation potential of the test substance is considered negligible.

It is assumed that the bioaccumulation potential of the substance CAS 133 -66 -4 is negligible as well.

Moreover, the bioconcentration factor (BCF) has been calculated to be 10 L/kg wet-wt by using QSAR estimation based upon the SMILES code of the molecular structure Arnot-Gobas BCF & BAF Methods by structural fragmentation of the EPI Suite v4.1.