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Ecotoxicological information

Long-term toxicity to fish

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The use of acrylic acid as a monomer, almost exclusively in closed systems for the production of copolymers with other monomers such as acrylates, amides, esters, methacrylates, acrylonitrile etc., indicates that environmental exposure would be limited. Acrylic acid 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 effects levels were in the same range of concentrations for fish and invertebratae, i.e. between 10 and 100 mg/L. In order to assess long-term toxicity towards aquatic organisms, a 21-day chronic life-cycle study with Daphnia magna was conducted under flow-through conditions. The respective NOEC values for maternal toxicity and reproduction were 3.8 and 19 mg/L, respectively. The most sensitive trophic level was found to be aquatic plants, i.e. algae with NOEC = 0.008 mg/L.