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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.

Summary:

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).