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Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

LC50 fish (96h): > 100 mg/l

NOEC fish (35 d): 9.4 mg/l

EC50 daphnia (48h): 69 mg/l

NOEC daphnia (21d): 37 mg/l

ErC50 algae (72h): > 110 mg/l

NOEC algae (72h): 110 mg/l

NOEC microorganisms: > 100 mg/l

Additional information

Data availability:

For MMA acute as well as chronic studies of sufficient reliability are available for all three trophic levels, as well as reliable microbial toxicity data.


The aquatic toxicity of methyl methacrylate was investigated on all three trophic levels using acute as well as long-term toxicity tests. The results showed that the test substance is of low toxicity to fish (LC50 > 100 mg/L) and algae (ErC50 (72h) > 110 mg/l) and harmful to aquatic invertebrates (EC50 = 69 mg/L). In the long-term toxicity tests, fish toxicity in an early life stage test with Danio rerio was the most sensitive endpoint (NOEC 9.4 mg/L). NOEC of long term daphnia (21d) was 37 mg/l.

The microbial NOEC was determined to be 100 mg/L based on the obvious absence of toxicity in a ready biodegradation test (OECD 301 C, MITI (I), 94 % degradation in 14 d at 100 mg/L).