Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Significant accumulation in organisms is not to be expected

Additional information

Parent compound butyryl chloride (CAS 141-75-3): Significant accumulation in organisms is not to be expected, as the substance has an estimated log Kow of 0.51. However, the assessment of the bioaccumulation potential of the parent compound may be of low relevance, due to the rapid hydrolysis of the acid chloride in aqueous solutions.


Hydrolysis product butyric acid (CAS 107-92-6): The experimental log Kow of 0.79 does not indicate a significant potential for bioaccumulation.