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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Long-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with section 3 of REACH Annex XI (substance tailored exposure-driven testing), the study does not need to be conducted.

Key value for chemical safety assessment

Additional information

Non-submission justification

The sole use of the isobutyl acrylate monomer is as a chemical intermediate in the production of polymeric resins (emulsion polymers) with other monomers such as acrylic acid and its salts, amides, esters, methacrylates, acrylonitrile etc. Isobutyl acrylate is handled primarily, if not exclusively, in closed systems.This use of isobutyl acrylate as a monomer for the production of copolymers in closed systems indicates that environmental exposure would be limited. The volatility of isobutyl acrylate provides for volatilization of any releases to the air. Isobutyl acrylate is slowly photodegradable and readily biodegradable, and accidental releases to the environment would not result in accumulation or persistence. The relatively high water solubility and corresponding low log Kow indicate that no bioaccumulation potential exists.

Acute effect levels were in the same range of concentrations based on mean measured concentrations for all three trophic levels, i.e. between 1 and 10 mg/L. In order to assess long-term toxicity towards aquatic organisms, a 21-day chronic life-cycle study with Daphnia magna was conducted with the structural analogue n-butyl acrylate by BASF SE (2009) (please refer to IUCLID section 6.1.4).